DARRELL VELEGOL by suchenfz

VIEWS: 4 PAGES: 17

									Darrell Velegol
Department of Chemical Engineering
Penn State University
University Park PA 16802, USA
Phone: (814) 865-8739, email velegol@psu.edu, web www.velegol.org

Professional Preparation
West Virginia University              BS Chemical Engineering               1988-1992
University of Melbourne (Australia)   NSF PhD enhancement (Maths)           1996
Carnegie Mellon University            PhD Chemical Engineering              1993-1997
Carnegie Mellon University            post-doc (Microscopy & Cell Bio)      1997-1999

Appointments
Professor                             Penn State University                 2009-present
Associate Professor                   Penn State University                 2005-2009
Assistant Professor                   Penn State University                 1999-2005
Summer Design Intern                  The Chester Engineers                 1989

Selected Publications
1. Chaturvedi, Neetu; Hsiao, Erik; Velegol, Darrell; Kim, Seong H. “Mask-less fabrication of
    nanowells using chemically reactive colloids.” Nano Letters, 11, 672-676 (2011).
2. González Serrano, César; McDermott, Joseph J.; Velegol, Darrell. “Sediments of Soft
    Spheres Arranged by Effective Density.” Accepted to Nature Materials, jun2011.
3. Chaturvedi, Neetu; Hong, Yiying; Sen, Ayusman; Velegol, Darrell, “Magnetic Enhancement
    of Phototaxing Catalytic Motors,” Langmuir, 26, 6308-6313 (2010).
4. Hong, Yiying; Velegol, Darrell; Chaturvedi, Neetu; Sen, Ayusman. “Biomimetic behavior of
    synthetic particles: from microscopic randomness to macroscopic control.” Physical
    Chemistry Chemical Physics, 12, 1423-1435 (2010). Invited Perspective article.
5. McDermott, Joseph J.; Chaturvedi, Neetu; Velegol, Darrell. “Functional Colloidal Trimers
    by Quenched Electrostatic Assembly.” Physical Chemistry Chemical Physics, 12, 11930–
    11937 (2010). Invited paper for special issue on colloidal assembly.

6. Velegol, Darrell; Jerri, Huda A.; McDermott, Joseph J.; Chaturvedi, Neetu. “Micro-factories
   for Colloidal Assemblies,” AIChE Journal, accepted 2010. This is an invited Perspective.
7. Hong, Yiying; Blackman, Nicole M.K.; Kopp, Nathaniel D.; Velegol, Darrell; Sen,
   Ayusman. “Chemotaxis of Non-Biological Nanorods.” Physical Review Letters, 99, 178103
   (p 1-4) (2007). See Highlight “Nano Steams Ahead” in Nature, 450, 5 (2007). "Tiny rods
   steer      themselves"        at     http://physicsworld.com/cws/article/news/31730         and
   http://nanotechweb.org/cws/article/tech/
   31740;jsessionid=2B7509820E5AA2DBDE155798D3F075BC (8nov2007); "Nano steams
   ahead" http://www.nature.com/nature/journal/v450/n7166/pdf/450005a.pdf.
8. Nel, Andre E.; Mädler, Lutz; Velegol, Darrell; Xia, Tian; Hoek, Eric M.; Somasundaran,
   Ponisseril; Klaessig, Fred; Castranova, Vince; Thompson, Mike. “Bio-physicochemical
   interactions at the nano-bio interface: implications for biological use and safety assessment of
   engineered nanoparticles.” Nature Materials, 8, 543-557 123 (2009).Hong, Yiying;
   Blackman, Nicole M.K.; Kopp, Nathaniel D.; Velegol, Darrell; Sen, Ayusman. “Chemotaxis
   of Non-Biological Nanorods.” Physical Review Letters, 99, 178103 (p 1-4) (2007). See
   Highlight in Nature, 450, 5 (2007).


                                                                                               1-17
9. Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W.; Lucas, Amand A. “Van
    der Waals forces between dielectric nanoclusters.” Langmuir, 23, 1735-1740 (2007).
10. Velegol, Darrell. “Assembling colloidal devices by controlling interparticle forces,” Journal
    of Nanophotonics, 1, 012502 (p 1-25) (2007). Invited review article.

Honors & Awards
Penn State Engineering Alumni Society Outstanding Teaching Award, 2010
Alpha Chi Sigma Outstanding Professor Award, Penn State University, 2003, 2009
Victor K. LaMer Award, American Chemical Society Colloids & Surfaces Division, June 1998
National Science Foundation PhD Fellow, August 1992 - July 1995
DuPont PhD Fellow, August 1992 - July 1996
Rhodes Scholar Finalist (District II), December 1991
Truman Scholar Alternate, March 1990
West Virginia University Foundation Scholar, August 1988 - May 1992

Professional Affiliations
American Association for the Advancement of Science (AAAS), 1994 – present
American Chemical Society (ACS), 1994 – present
American Institute of Chemical Engineers (AIChE), 1989 – present
American Society for Engineering Education (ASEE), 1999 – present

Synergistic Activities
 Undergraduate research. Have mentored 52 undergrad students in my research lab
   (including 30 NSF summer REU students), on colloidal assembly, bacterial adhesion,
   nanocolloid forces, Moringa oleifera.
 Symposium organizer and session chair. Have organized 4 symposia at National ACS
   meetings. Have chaired more than 20 sessions at annual ACS, AIChE, and other national
   meetings. Will chair a Gordon Conference in 2014 (Colloidal, Macromolecular &
   Polyelectrolyte Solutions).
 Journal and proposal reviewer. Journals include Nano Letters, Proceedings of the National
   Academy of Science USA, Langmuir, Journal of Colloid and Interface Science, Industrial &
   Engineering Chemistry Research, Journal of Nanoscience and Nanotechnology, Physical
   Review Letters, Physical Review E, ASME Journal of Biomechanical Engineering, Journal of
   Chemical Physics, Nature Materials, J Membrane Science. Funding agencies include the
   National Science Foundation (many CAREER, NIRT, NER panels), National Institutes of
   Health (NIEHS), Petroleum Research Fund, Department of Energy, Los Alamos National
   Lab. Editorial advisory board for Langmuir.
 7 Habits workshop. Interactive workshop (based on Stephen Covey‟s best-selling book)
   that helps students learn about their life plan, scheduling time, teamwork, and self-
   improvement.
 molecular and colloids courses. Developed ChE 528 grad course “Colloids and
   Nanocolloids”, taught to dozens of students from various departments; co-developed
   developed Chem 497A “Physical Chemistry” that includes introductory statistical mechanics
   and molecular-level migration concepts.

Collaborators & Other Affiliations
Thesis/post-doc advisors. John L. Anderson (President, Illinois Institute Tech), Stephen Garoff
(Physics, CMU), post-doc Frederick Lanni (Biology, CMU)


                                                                                             2-17
Outside collaborators (last 5 years). Silvina Gatica (Physics, Howard), Michael J. Pishko
(Chemical Engineering, Texas A&M), Amand Lucas (Belgium).
Current graduate students (6 at Penn State ChE). Joe McDermott (PhD Spring 2011), Laura
Ramirez (PhD Spring 2012), Tso-Yi Chiang (PhD Spring 2013), Abhishek Kar (PhD Spring
2015).
Current post-docs. none.
Previous graduate students (12). Jason D. Feick (PhD 2002, post-doc 2003, E Ink), Aron Parekh
(PhD 2003, Vanderbilt University Medical School), Michael Salerno (PhD 2005, Camp, Dresser,
& McKee), Gretchen L. Holtzer (PhD 2005, ExxonMobil), Joseph F. Jones (PhD 2005, Center
for Naval Analysis), Mary L. Parent (PhD 2007, Lexmark), Allison Yake (PhD 2007, DuPont),
Charles E. Snyder (PhD 2008, Institute for Defense Analysis), Prasanna K. Thwar (MS 2001,
PhD Michigan, Advanced Liquid Logic), Martin Gentile (MS 2004, Pfizer), Nicole Blackman
(MS 2007, Corning), Shailesh Shori (MS 2008, U South Carolina), Huda A. Jerri (Firmenich),
César González Serrano (MS 2010, Sabic), Neetu Chaturvedi (PhD 2011, DuPont).
Previous post-docs (5). Jason D. Feick (Chemical Engineering, 2003, now at E Ink), Aron
Parekh (2004, now at Vanderbilt University Medical School), Mercedes Calbi (Physics, joint
with Milton Cole 2002, now at U Southern Illinois), Silvina Gatica (Physics, joint with Milton
Cole 2004, Howard University), Hye-Young Kim (Physics, joint with Milton Cole 2005-7,
Assistant Professor of Physics and Chemistry at Southeastern Louisiana University)
Penn State collaborators (last 5 years). Milton Cole (Physics), Kristen Fichthorn (Chemical
Engineering), Ayusman Sen (Chemistry), Tony Huang (Engineering Science & Mechanics),
Thomas Mallouk (Chemistry), Christine Keating (Chemistry), Theresa Mayer (Electrical
Engineering).

Research: Fabrication of Colloidal Devices
Our lab group fabricates colloidal assemblies, from roughly 100 nanometers to 10 micrometers
in size, for technologies in microbots, reagent delivery, and potable water. Our “particle
lithography” and “salting out / quenching / fusing” techniques are examples of ways we
manipulate forces between the particles, so that the small particles “know how to piece
themselves together”.        The research requires fundamental studies in colloidal forces,
electrokinetic modeling, and instabilities in sedimentation operations. Our lab group combines
experiments (e.g., video microscopy, electron microscopy, Nanofabrication, synthesis), numerics
(e.g., Brownian dynamics simulations, eigenmode problems), and theory (e.g., hydrodynamics,
electrokinetics, colloidal forces). Our primary research expertise includes:

colloidal fabrication. By placing site-specific chemistry on individual colloidal particles using
our “particle lithography” method, we are working toward building colloidal machines and
devices and patterned particles. Significant applications include microbots and reagent delivery.
interparticle forces. We have developed the “coupled dipole method” to calculate van der Waals
forces between nanocolloids, to improve upon the Lifshitz theory (which is not applicable for
nanocolloids, for several reasons). Then we use our technique of “differential electrophoresis” to
measure interparticle forces, for particles as small as 85 nm. The vision is to design nanocolloids
that remain stable without dispersants.
sorting. Sedimentation separations by gravity or centrifugation must be done in density
gradients, and even then are subject to a classic Rayleigh-Bénard instability. We are defining the
limits of current sedimentation processes, and developing new technologies that work better.
charge nonuniformity. We have developed the technique of “rotational electrophoresis” to
measure particle charge nonuniformity for the first time, showing that particles that have long
been thought to be uniformly-charged, are in fact not. This has important ramifications for
colloidal forces stability.
                                                                                               3-17
   Darrell Velegol attended West Virginia University for his BS in Chemical Engineering, and he earned his PhD
   in Chemical Engineering at Carnegie Mellon University in 1997 working with Professors John L. Anderson and
   Stephen Garoff. In 1998 Velegol won the Victor K. LaMer Award of the American Chemical Society for the
   best PhD in the field of Colloid & Surface Science. He continued with a post-doc in the Center for Light
   Microscope Imaging and Biotechnology at Carnegie Mellon, working under Professor Fred Lanni of the
   Biology Department. In June 1999 Velegol joined the Department of Chemical Engineering at Penn State,
   where he was promoted to Associate Professor in 2005. Velegol won an NSF CAREER Award in 2000, and
   has continued to be funded by NSF, DOE, EPA, PRF, the Air Force, and other agencies for his work with
   colloidal forces and colloidal assembly. Currently he works with 6 graduate students and numerous undergrad
   researchers. His research investigates the fabrication of colloidal assemblies and devices, with a specialty in
   understanding the interparticle forces and sorting processes. His research group uses a wide range of
   experimental and modeling approaches. Velegol is a member of ACS, AIChE, AAAS, and ASEE. More
   recently, he has engaged in studying the “physics of community”, pursuing questions in learning, creativity,
   motivation, trust and deceit, courage, and other social science ideas using results from physics, chemistry,
   biology, and chemical engineering. He is applying this research to “Wild Scholars”, which aims to have an
   impact on grades 7-12 education throughout Pennsylvania and beyond. In 2009 Velegol was promoted to Full
   Professor at Penn State.


Patents
   1 Velegol, Darrell; Feick, Jason D.; Yake, Allison M.; Snyder, Charles. “Particle
       lithography method and ordered structures prepared thereby.” U.S Patent No. 7,771,787
       (U.S. Patent Application No. 11/211,312), issued 10aug2010. Application PST-14302/36
       (2005).
   2 Velegol, Darrell; Yake, Allison M. “Particle doublets and n-mers and methods for
       fabrication thereof.” U.S. Patent application PST-22518 (2006).

Publications (full list)
   1 Velegol, Darrell; Anderson, John L.; Garoff, Stephen. “Probing the Structure of Colloidal
       Doublets by Electrophoretic Rotation.” Langmuir, 12, 675-685 (1996).
   2 Shaeiwitz, Joseph A.; Whiting, Wallace B.; Velegol, Darrell. “A Large-Group Senior
       Design Experience: Teaching Responsibility and Life-Long Learning.” Chemical
       Engineering Education, 30, 70-75 (1996).
   3 Velegol, Darrell; Anderson, John L.; Garoff, Stephen. “Determining the Forces between
       Polystyrene Latex Spheres Using Differential Electrophoresis.” Langmuir, 12, 4103-4110
       (1996).
   4 Solomentsev, Yuri; Velegol, Darrell; Anderson, John L. “Conduction in the Small Gap
       between Two Spheres.” Physics of Fluids, 9, 1209-1217 (1997).
   5 Velegol, Darrell; Solomentsev, Yuri; Anderson, John L.; Carnie, Steven L.
       “Electrophoretic Rotation of Doublets Composed of Two Spheres Almost in Contact.”
       Colloids and Surfaces A, 140, 59-74 (1998).
   6 Velegol, Darrell; Catana, Sebastian; Anderson, John L.; Garoff, Stephen. “Tangential
       Forces between Non-Touching Colloidal Particles.” Physical Review Letters, 83, 1243-
       1246 (1999).
   7 Anderson, John L.; Velegol, Darrell; Garoff, Stephen. “Experimental Studies of the
       Forces between Colloidal Particles.” Langmuir, 16, 3372-3384 (2000).
   8 Velegol, Darrell; Feick, Jason D.; Collins, Lance. “Electrophoresis of Spherical Particles
       with a Random Distribution of Zeta Potential or Surface Charge”, Journal of Colloid and
       Interface Science, 230, 114-121 (2000).
   9 Feick, Jason D.; Velegol, Darrell. “The Electrophoresis of Spheroidal Particles having a
       Random Distribution of Zeta Potential”, Langmuir, 16, 10315-10321 (2000).


                                                                                                             4-17
10 Thwar, Prasanna K.; Velegol, Darrell. “Measuring Particle Diameter and Particle-Particle
   Gap with Nanometer Precision Using an Optical Microscope.” Industrial & Engineering
   Chemistry Research, 40, 3042-3047 (2001).
11 Velegol, Darrell; Anderson, John L.; Solomentsev, Yuri. “Electrophoresis of Complex
   and Interacting Particles”, ch 6 (pp 147-172) in Interfacial Electrokinetics and
   Electrophoresis, ed. Angel V. Delgado, New York: Marcel Dekker (2001).
12 Velegol, Darrell; Lanni, Frederick. “Cell Traction Forces on Soft Biomaterials I:
   Microrheology of Type I Collagen Gels.” Biophysical Journal, 81, 1786-1792 (2001).
13 Velegol, Darrell; Thwar, Prasanna K. “Analytical Model for the Effect of Surface
   Charge Nonuniformity on Colloidal Interactions.” Langmuir, 17, 7687-7693 (2001).
14 Feick, Jason D.; Velegol, Darrell. “Measurements of charge nonuniformity on
   polystyrene latex particles.” Langmuir, 18, 3454-3458 (2002).
15 Velegol, Darrell. “Electrophoresis of Randomly-Charged Particles.” Electrophoresis,
   23, 2023-2028 (2002).
16 Thwar, Prasanna K.; Velegol, Darrell. “Force Measurements between Weakly-attractive
   Polystyrene Particles.” Langmuir, 18, 7328-7333 (2002).
17 Velegol, Stephanie B.; Pardi, Shaun; Li, Xu; Velegol, Darrell; Logan, Bruce E. “AFM
   Imaging Artifacts due to Bacterial Cell Height and AFM Tip Geometry.” Langmuir, 19,
   851-857 (2003).
18 Holtzer, Gretchen L.; Velegol, Darrell. “Force Measurements between Colloidal Particles
   of Identical Zeta Potentials using Differential Electrophoresis.” Langmuir 19, 4090-4095
   (2003).
19 Calbi, M.M.; Gatica, S.M.; Velegol, D.; Cole, M.W. “Retarded and nonretarded van der
   Waals interactions between a cluster and a second cluster or a conducting surface.” Phys.
   Rev. A, 67, 033201-1 – 033201-5 (2003).
20 Velegol, Darrell; Feick, Jason D. “Evaluating randomness of charge distribution on
   colloidal particles using stationary electrophoresis angles.” Langmuir, 19, 4592-4596
   (2003).
21 Jones, Joseph F.; Feick, Jason D.; Imoudu, Daniel; Chukwumah, Nkiru; Vigeant, Margot;
   Velegol, Darrell. “Oriented adhesion of E. coli to polystyrene particles.” Applied &
   Environmental Microbiology, 69, 6515-6519 (2003).
22 Gatica, Silvina M.; Calbi, Mercedes M.; Cole, Milton W.; Velegol, Darrell. “Three-body
   interactions involving clusters and films.” Physical Review B, 68, 205409-1 – 205409-8
   (2003).
23 Feick, Jason D.; Velegol, Darrell. “Reducing Surface Charge Nonuniformity on
   Individual Particles through Annealing.” Industrial and Engineering Research Chemistry,
   43, 3478-3483 (2004).
24 Feick, Jason D.; Chukwumah, Nkiru; Noel, Alexandra E.; Velegol, Darrell. “Altering
   surface charge nonuniformity on individual colloidal particles.” Langmuir, 20, 3090-3095
   (2004).
25 Velegol, Darrell. “Brownian sampling in an unbounded space.” Journal of Colloid and
   Interface Science, 274, 334-336 (2004).
26 Parent, Mary E.; Velegol, Darrell. “E. coli adhesion to silica in the presence of humic
   acid.” Colloids and Surfaces B, 39, 45-51 (2004).
27 Salerno, Michael B.; Logan, Bruce E.; Velegol, Darrell. “Importance of molecular
   details in predicting bacterial adhesion to hydrophobic surfaces.” Langmuir, 20, 10625-
   10629 (2004).
28 Gatica, Silvina M.; Cole, Milton W.; Velegol, Darrell. “Designing van der Waals forces
   between nanocolloids.” Nano Letters, 5, 169-173 (2005).

                                                                                        5-17
29 Snyder, Charles E.; Yake, Allison M.; Feick, Jason D.; Velegol, Darrell. “Nanoscale
   Functionalization and Site-Specific Assembly of Colloids by Particle Lithography.”
   Langmuir, 21, 4813-4815 (2005).
30 Salerno, Michael B.; Rothstein, Sam; Nwachukwu, Chisomaga; Shelbi, Haithem;
   Velegol, Darrell; Logan, Bruce E. “Differences between chemi-sorbed and physi-sorbed
   biomolecules on particle deposition to hydrophobic surfaces.” Environmental Science &
   Technology, 39, 6371-6377 (2005).
31 Jones, Joseph F.; Holtzer, Gretchen L.; Snyder, Charles; Yake, Allison M.; Velegol,
   Darrell. “Charge nonuniformity light scattering.” Colloids and Surfaces A, 267, 79-85
   (2005).
32 Holtzer, Gretchen L.; Velegol, Darrell. “Limitations of differential electrophoresis for
   measuring colloidal forces: A Brownian dynamics study.” Langmuir, 21, 10074-10081
   (2005).
33 Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W.; Mukhopadhyay,
   Gautam. “Static Polarizabilities of Dielectric Nanoclusters.” Physical Review A, 72,
   053201-1 to 053201-8 (2005).
34 Kline, T. R.; Paxton, W. F.; Wang, Y.; Velegol, D.; Mallouk, T. E.; Sen, A. “Catalytic
   Micropumps: Microscopic Convective Fluid Flow and Pattern Formation.” Journal of the
   American Chemical Society, 127, 17150-17151 (2005).
35 Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W.; Lucas, Amand A.
   “Van der Waals forces between nanoclusters: importance of many-body effects.” Journal
   of Chemical Physics, 124, 074504-1 to 074504-4 (2006).
36 Jones, Joseph, F.; Velegol, Darrell. “Laser Trap Studies of End-on E. coli Adhesion to
   Glass.” Colloids & Surfaces B, 50, 66-71 (2006).
37 Jones, Joseph F.; Waters, Dale; Flamm, Matthew; Velegol, Darrell. “Orientation of
   irreversible adhesion of spherical particles on prolate spheroidal collectors.” Journal of
   Colloid and Interface Science, 299, 696-702 (2006).
38 Velegol, Darrell. “Nanoscale charge nonuniformity on colloidal particles.” chapter 15 for
   Molecular and Colloidal Electro-optics (Surfactant Science Series, vol 134), eds Stoyl P.
   Stoylov and Maria Stoimenova (2006).
39 Yake, Allison M.; Panella, Rocco A.; Snyder, Charles E.; Velegol, Darrell. “Fabrication
   of Doublets by a Salting Out – Quenching – Fusing Technique.” Langmuir, 22, 9135-
   9141 (2006).
40 Salerno, Michael B.; Flamm, Matt; Logan, Bruce E.; Velegol, Darrell. “Transport of
   Rodlike Colloids through Packed Beds.” Environmental Science & Technology, 40,
   6336-6340 (2006).
41 Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W. “Fully retarded van
   der Waals interaction between dielectric nanoclusters.” Journal of Chemical Physics,
   125, 125, 174303-1 to 174303-8 (2006).
42 Kline, Timothy R.; Iwata, Jodi; Lammert, Paul E., Mallouk, Thomas E.; Sen, Ayusman;
   Velegol, Darrell. “Catalytically-driven Colloidal Patterning and Transport.” Journal of
   Physical Chemistry B, 110, 24513-24521 (2006).
43 Velegol, Darrell; Holtzer, Gretchen L.; Radović-Moreno, Aleksandar F.; Cuppett, Joshua
   D. “Force Measurements between Sub-100 nm Colloidal Particles.” Langmuir, 23, 1275-
   1280 (2007).
44 Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W.; Lucas, Amand A.
   “Van der Waals forces between dielectric nanoclusters.” Langmuir, 23, 1735-1740
   (2007).
45 Parekh, Aron; Velegol, Darrell. “Collagen Gel Anisotropy Measured by 2-D Laser Trap
   Microrheometry.” Annals of Biomedical Engineering, 35, 1231-1246 (2007).
                                                                                         6-17
46 Yake, Allison M.; Zahr, Alisar S.; Jerri, Huda A.; Pishko, Michael V.; Velegol, Darrell.
   “Localized Functionalization of Individual Colloidal Carriers for Cell Targeting and
   Imaging.” Biomacromolecules, 8, 1958-1965 (2007).
47 Velegol, Darrell. “Assembling colloidal devices by controlling interparticle forces,”
   Journal of Nanophotonics, 1, 012502 (p 1-25) (2007). Invited review article. [DOI:
   10.1117/1.2759184].
48 Yake, Allison M.; Snyder, Charles E.; Velegol, Darrell. “Site-Specific Functionalization
   on Individual Colloids: Size Control, Stability and Multi-Layers.” Langmuir, 23, 9069-
   9075 (2007).
49 Hong, Yiying; Blackman, Nicole M.K.; Kopp, Nathaniel D.; Velegol, Darrell; Sen,
   Ayusman. “Chemotaxis of Non-Biological Nanorods.” Physical Review Letters, 99,
   178103 (p 1-4) (2007). See Highlight “Nano Steams Ahead” in Nature, 450, 5 (2007).
   "Tiny rods steer themselves" at http://physicsworld.com/cws/article/news/31730 and
   http://nanotechweb.org/cws/article/tech/
   31740;jsessionid=2B7509820E5AA2DBDE155798D3F075BC                 (8nov2007);     "Nano
   steams ahead" http://www.nature.com/nature/journal/v450/n7166/pdf/450005a.pdf.
50 Velegol, Darrell. “Fabrication of high-value particle assemblies,” Rubber & Plastic
   News, 37, 14-15 (26 November 2007). Invited article.
51 Parent, Mary E.; Snyder, Charles E.; Kopp, Nathaniel; Velegol, Darrell. “Localized
   Quorum Sensing in Vibrio fischeri.” Colloids Surfaces B, 62, 180-187 (2008).
52 McDermott, Joseph J.; Velegol, Darrell. “Simple Fabrication of Metallic Colloidal
   Doublets Having Electrical Connectivity.” Langmuir, 24, 4335-4339 (2008).
53 Cole, Milton W.; Velegol, Darrell. “Van der Waals Energy of a 1-Dimensional Lattice.”
   Molecular Physics, 106, 1587-1596 (2008).
54 Chaturvedi, Neetu; Jerri, Huda; Velegol, Darrell. “Design and characterization of
   randomly-speckled spheres.” Langmuir, 24, 7618 – 7622 ( 2008).
55 Jerri, Huda; Dutter, Rachel; Velegol, Darrell. “Fabrication of Stable Anisotropic
   Microcapsules.” Soft Matter, 5, 827-834 (2009).
56 Snyder, Charles E.; Ong, Melissa; Velegol, Darrell. “In Solution Assembly of Colloidal
   Water.” Soft Matter, 5, 1263-1268 (2009). [DOI: 10.1039/b810882j]
57 Velegol, Darrell; Shori, Shailesh; Snyder, Charles E. “Rayleigh-Bénard Instability in
   Sedimentation.” Industrial & Engineering Chemistry Research, 48, 2414-2421 (2009).
   [DOI: 10.1021/ie800720k]. Invited paper to special issue honoring Professor John L.
   Anderson.
58 Cole, Milton W.; Velegol, Darrell; Kim, Hye-Young; Lucas, Amand A. “Nanoscale van
   der Waals Interactions,” Molecular Simulation, 35, 849-866 (2009). Invited review
   article.
59 Nel, Andre E.; Mädler, Lutz; Velegol, Darrell; Xia, Tian; Hoek, Eric M.; Somasundaran,
   Ponisseril; Klaessig, Fred; Castranova, Vince; Thompson, Mike. “Bio-physicochemical
   interactions at the nano-bio interface: implications for biological use and safety
   assessment of engineered nanoparticles.” Nature Materials, 8, 543-557 123 (2009).
60 Sen, Ayusman; Ibele, Michael; Hong, Yiying; Velegol, Darrell. “Chemo and Phototactic
   Nano/Microbots,” Faraday Discussions, 143, 1-13 (2009).
61 Hong, Yiying; Velegol, Darrell; Chaturvedi, Neetu; Sen, Ayusman. “Biomimetic
   behavior of synthetic particles: from microscopic randomness to macroscopic control.”
   Physical Chemistry Chemical Physics, 12, 1423-1435 (2010). Invited Perspective article.
62 Jerri, Huda A.; Sheehan, William P.; Snyder, Charles E.; Velegol, Darrell. “Prolonging
   Density Gradient Stability,” Langmuir, 26, 4725-4731 (2010).
63 Chaturvedi, Neetu; Hong, Yiying; Sen, Ayusman; Velegol, Darrell, “Magnetic
   Enhancement of Phototaxing Catalytic Motors,” Langmuir, 26, 6308-6313 (2010).
                                                                                       7-17
   64 Cole, Milton W.; Gergidis, Leonidas N.; McNutt, Jessica P.; Velegol, Darrell; Kim, Hye-
      Young; Bond, Zachary K. “Many-body van der Waals forces involving chains.” Journal
      of Nanophotonics, 4, 041560 (15 pages) (2010). Invited article.
   65 Ramírez, Laura Mely; Milner, Scott T.; Snyder, Charles E.; Colby, Ralph H.; Velegol,
      Darrell. “Controlled Flats on Spherical Polymer Colloids,” Langmuir, 26, 7644-7649
      (2010).
   66 Velegol, Darrell; Jerri, Huda A.; McDermott, Joseph J.; Chaturvedi, Neetu. “Micro-
      factories for Colloidal Assemblies,” AIChE Journal, 56, 564-569 (2010). This is an
      invited Perspective.
   67 McDermott, Joseph J.; Chaturvedi, Neetu; Velegol, Darrell. “Functional Colloidal
      Trimers by Quenched Electrostatic Assembly.” Physical Chemistry Chemical Physics,
      12, 11930–11937 (2010). Invited paper for special issue on colloidal assembly.
   68 Chaturvedi, Neetu; Hsiao, Erik; Velegol, Darrell; Kim, Seong H. “Mask-less fabrication
      of nanowells using chemically reactive colloids.” Nano Letters, 11, 672-676 (2011).
   69 González Serrano, César; McDermott, Joseph J.; Velegol, Darrell. “Sediments of Soft
      Spheres Arranged by Effective Density.” Accepted to Nature Materials, jul2011.
   70 Juluri, Bala Krishna; Chaturvedi, Neetu; Hao, Qingzhen; Lu, Mengqian; Velegol, Darrell;
      Jensen, Lasse; Huang, Tony Jun. “Scalable Manufacturing of Plasmonic Nanodisk
      Dimers and Cusp Nanostructures Using Salting-out Quenching Method and Colloidal
      Lithography.” ASAP article in ACS Nano (2011).


Current grants
   1 “Colloidal Polymer Chains: Construction, Statics and Dynamics,” National Science
      Foundation CBET Grant #0730780 (August 2007 to August 2011, $240,000). PI Ralph
      Colby (50%), co-PI Darrell Velegol (50%). Velegol = 0.0 month Summer. This grant
      ends in Aug 2011.
   2 “Self-moving Catalytic Nanomotors,” Air Force Office of Sponsored Research
      (01aug2010-31jul2013 for $540,000). PI: Ayusman Sen (50%), co-PI Darrell Velegol
      (50%). Velegol = 1.0 month Summer.
   3 “IDR: Emergent Assembly and Patterning of Dynamic Catalytic Motor Systems,”
      National Science Foundation CBET grant #1014673 (01aug2010-31jul2013 for
      $600,000). PI: Darrell Velegol (50%), co-PI Ayusman Sen (50%). Velegol = 1.0 month
      Summer.
   4 “Harvesting potable and storable water with Moringa seeds and sand,” Environmental
      Protection Agency P3 Student Competition (01aug2010-31jul2011 for $10,000). PI:
      Darrell Velegol (34%), co-PIs: Stephanie B. Velegol (33%) and Richard Schuhmann
      (33%). Velegol = 0.0 month Summer. This is a 1-year grant to support undergraduate
      students.
   5 “Controlling Rheology and Lubrication by Tuning Colloidal Interactions,” National
      Science Foundation CBET (01aug2010-31jul2011 for $290,000). PI: Ralph Colby (50%),
      co-PI: Darrell Velegol (50%). Velegol = 1.0 month Summer.


NSF support within the past 5 years
1. “Bottom Up Assembly of Metal and Semiconductor Nanowires: Fundamental Forces to
   Nanoelectronic Circuits”, National Science Foundation NIRT Grant #CCR-0303976, $1 000
   000 (15 Aug 2003 – 31 Jul 2008). (PI: Darrell Velegol 25%, co-PIs: Kristen A. Fichthorn,
   Theresa Mayer, Christine D. Keating).

                                                                                         8-17
2. “Building colloidal assemblies via site-specific bonding regions.” National Science
   Foundation CBET Grant # 0651611, $240 000 (1 Apr 2007 to 31 Mar 2010). PI: Darrell
   Velegol (100%). Velegol = 0.0 month Summer. This grant ended in Mar 2010.

Proposals Pending
   1 “Bottom-Down Nanomanufacturing via Localized Delivery and Release with
      Nanoparticles,” National Science Foundation CMMI (Nanomanufacturing) (submitted
      15feb2011 for $399,965). PI: Seong Kim (30%), co-PIs: Darrell Velegol (20%), Tony
      Huang (20%), Themis Matsoukas (20%). Velegol = 0.0 month Summer.

Previous grants completed
   1 “Measuring the Effect of Nanoscale Charge Nonuniformity on Colloidal Forces,”
      National Science Foundation CAREER Grant # CTS-9984443, $234 000 (March 2000 –
      February 2004).
   2 “Charge Nonuniformity and the Stability of Particles in Nonaqueous Colloidal
      Dispersions,” Petroleum Research Fund type G Grant # 35400-G9, $25 000 (September
      2000 – August 2002).
   3 “Molecular Level Analysis of Macromolecule-Surface Interactions in Bacterial
      Adhesion.” National Science Foundation CRAEMS Program, CH3-0089156 , $2,512,000
      (September 2000 – August 2005). (PIs: Bruce Logan, Darrell Velegol, John Chorover,
      Menacham Elimelech, James Kubicki).
   4 “Green Engineering of Dispersed Nanoparticles: Measuring and Modeling Nanoparticle
      Forces.” Environmental Protection Agency STAR Grant # R-82960501, $370 000
      (January 2002 – December 2004). (PIs: Darrell Velegol and Kristen A. Fichthorn)
   5 “Center of Excellence in Nanoparticulate Science and Engineering.” to Ben Franklin
      Technology Center, $80 000 (1 July 2002 – 30 Jun 2003) (PIs: James H. Adair, Darrell
      Velegol).
   6 “Bottom Up Assembly of Metal and Semiconductor Nanowires: Fundamental Forces to
      Nanoelectronic Circuits”, National Science Foundation NIRT Grant #CCR-0303976, $1
      000 000 (15 Aug 2003 – 31 Jul 2008). (PI: Darrell Velegol 25%, co-PIs: Kristen A.
      Fichthorn, Theresa Mayer, Christine D. Keating)
   7 “Center of Excellence in Nanoparticulate Science and Engineering.” to Ben Franklin
      Technology Center, $80 000 (1 July 2003 – 30 Jun 2004) (PIs: James H. Adair, Darrell
      Velegol).
   8 “NER: Nanoparticle stability by quantum „design‟ of van der Waals forces.” National
      Science Foundation NER grant CTS-0403646, $130 000 (1 Jul 2004 – 30 Jun 2005). PIs:
      Darrell Velegol and Milton W. Cole.
   9 “Center of Excellence in Nanoparticulate Science and Engineering.” to Ben Franklin
      Technology Center, $80 000 (1 July 2004 – 30 Jun 2005) (PIs: James H. Adair, Darrell
      Velegol).
   10 “Site-specific chemistry on colloidal particles by „particle lithography‟.” Petroleum
      Research Fund Grant # 43453-AC10, $80 000 (September 2005 – August 2007).
   11 “Atomic-Scale Simulation of Many-Body Forces in Colloidal Nanoparticle Suspensions.”
      Petroleum Research Fund ($90 000, 1 Sep 2007 to 31 Aug 2009). PI: Kristen A.
      Fichthorn, co PIs: Darrell Velegol and Milton Cole.
   12 “Nanocolloidal forces for stability or assembly.” Department of Energy Basic Energy
      Sciences Grant # DE-FG02-07ER46414 ($789,366, 15 Aug 2007 – 14 Aug 2010). PIs:
      Darrell Velegol (33%), Milton Cole, Kristen Fichthorn. Velegol = 1.0 month Summer.
      This grant ends in Mar 2010.

                                                                                       9-17
   13 “Building colloidal assemblies via site-specific bonding regions.” National Science
      Foundation CBET Grant # 0651611, $240 000 (1 Apr 2007 to 31 Mar 2010). PI: Darrell
      Velegol (100%). Velegol = 0.0 month Summer. This grant ends in Mar 2010.
    4 Petroleum Research Fund SE (travel) grants, many National Science Foundation
      Research Experience for Undergrads grants.

Equipment & Facilities
   safety. Fume hoods (including a biological laminar flow hood), water showers, eye wash,
     fire extinguisher, lab aprons, standard goggles, laser goggles, gloves.
   space. 1500 ft2 lab space.
   video microscopy. two microscopes: Nikon TE2000 and Nikon TE 300. Both are
     inverted microscopes with various objectives (4× - 100×, including a water immersion
     objective) and fluorescence equipment, Prior motorized stages (200 nm resolution), Cohu
     4010 CCD camera, digital image processing software and hardware, Newport vibration
     isolation tables.
   laser trap. 2500 mW NdYag solid state (1064 nm) laser trap. Trap is moveable by
     scanning galvanometers.
   Wyatt 18 angle static light scattering EOS device.
   small angle light scattering. 17 mW laser with full detection, for measuring interparticle
     forces and stability.
   differential electrophoresis flow cell. Keithley constant current source/measurement
     device, peristaltic pump for flow, syringe pump for flow, platinum electrodes.
   rheometer. Rheometrics RFS3 controlled strain rheometer.
   latex reactor. In-house assembly for manufacturing polymer colloids.
   incubators. Floor incubator, Focht stage incubator for microscope, bacterial controlled
     temperature shaker
   computation. 4 computers, for word processing to numerical calculations.
   standard equipment. Millipore water purification, stirring/heating plates, syringe pump,
     water baths, electronic balances, Pipetmen, centrifuge, refrigerators, glassware.
   UV-vis spectrophotometer.
   bacterial growth equipment (autoclave, deep freeze, supplies).
   on campus shared user facilities (open access): FESEM, TEM, confocal microscopy, cell
     counting, ZetaPALS, Nanofab (electron beam lithography, photolithography.

Invited Presentations
   1 University of Oklahoma, November 2011.
   2 Rice University, September 2011.
   3 “Colloidal Assemblies that DO Something”, International Latex Conference, Akron OH,
       July 2011.
   4 “Character and Excellence: Hallmarks of NSCS Scholars,” National Society of Collegiate
       Scholars, Induction Ceremony Keynote, Penn State University, 03 October 2010.
   5 “Sorting Colloidal Particles: Thermodynamics or transport – which wins?”, Notre Dame
       (Chemical Engineering), March 2010.
   6 “Sorting mixtures of colloidal particles,” Illinois Institute of Technology, November
       2009.
   7 “Chemotaxis of Non-Biological Particles,” University of Pennsylvania, October 2009.
   8 “Sedimentation separation of colloidal particles,” Tulane University, September 2009.
   9 “Multi-Body Van Der Waals Forces,” American Chemical Society Colloids and Surface
       Science Symposium, Columbia University, June 2009.
                                                                                         10-17
10 “Sedimentation separation of colloidal particles,” Penn State University, April 2009.
11 “7 Steps to Fabricating a Colloidal Machine.” 21st International Symposium on Polymer
   Analysis and Characterization (ISPAC), University of Delaware, June 2008.
12 “Phototaxis of nonbiological rods.” Penn State MRSEC, May 2008.
13 “Colloidal Fabrication Using Site-Specific Interparticle Forces.” Gordon Research
   Conference on Colloidal, Macromolecular, and Polyelectrolyte Science, Ventura CA,
   February 2008.
14 “The fabrication of colloidal assemblies.” Department of Chemical Engineering, Texas
   A&M University, October 2007.
15 “Forces between nanocolloids.” California Nanosystems Institute (CNSI) at UCLA, for
   workshop on “Bio-physicochemical interactions of engineered nanomaterials,”
   September 2007.
16 “The fabrication of colloidal assemblies.” Department of Chemical Engineering,
   University of Virginia, September 2007.
17 “Designing processes for fabricating colloidal assemblies.” Department of Chemical
   Engineering, University of Louisville (KY), April 2007.
18 “Designing processes for fabricating colloidal assemblies.” Department of Chemical
   Engineering, Carnegie Mellon University, April 2007.
19 “Designing processes for fabricating colloidal assemblies.” Department of Chemical
   Engineering, University of Puerto Rico (Mayaguez), February 2007.
20 “Fabrication of well-controlled particle assemblies.” Engineering Science & Mechanics,
   Penn State University, October 2006.
21 “Colloidal molecules: fabrication and engineering design.” Department of Chemical
   Engineering, City College of New York, October 2006.
22 “Patterning on individual colloidal particles using the particle lithography process.”
   American Chemical Society (PDSM division), San Francisco, September 2006.
23 “Colloidal molecules: fabrication and engineering design.” Procter & Gamble, Cincinnati
   OH, August 2006.
24 “Colloidal molecules: fabrication and engineering design.” American Chemical Society
   Colloids and Surface Science Symposium, University of Colorado (Boulder), June 2006.
25 “Colloidal atoms and molecules: design and fabrication.” 38th American Chemical
   Society Central Regional Meeting, Frankenmuth MI, May 2006.
26 “Nanoscale charge nonuniformity on polymer colloid latexes.” Dow Chemical, Midland
   MI, May 2006.
27 “Colloidal atoms and molecules: Fabrication and engineering design.” World Congress
   on Particle Technology (Orlando FL), April 2006.
28 “Colloidal molecules: Synthesis and engineering design.” Materials Science Department,
   University of New Hampshire, April 2006.
29 “Colloidal molecules”: Synthesis and engineering design. Rohm & Haas (Spring House
   PA), January 2006.
30 “Measuring charge nonuniformity on colloidal particles.” American Institute of
   Chemical Engineers Annual Meeting, Cincinnati, November 2005. [Velegol, Paul
   McKenzie, and John Walz organized this invited session for John L. Anderson‟s 60th
   birthday.]
31 “Colloidal molecules”: Synthesis and engineering design. University of Florida
   (Gainesville), October 2005.
32 “Nanoscale charge nonuniformity on latex particles.” Gordon Conference on Polymer
   Colloids, Tilton NH, July 2005.
33 “Processing analysis for “colloidal molecules.” General Electric Plastics, Mt. Vernon IN,
   Jun 2005.
                                                                                       11-17
34 “Engineering forces between nanocolloids.” American Chemical Society Colloids and
   Surface Science Symposium, Clarkson University, June 2005.
35 “A story of colloidal molecules”. Food Science Department, Penn State University,
   February 2005.
36 “Charge nonuniformity on individual particles: characterization, consequences, and
   control.” Materials Science Department, University of Illinois (Urbana-Champaign),
   November 2003.
37 “Nanoscale charge nonuniformity and its effects on interparticle forces.” International
   Conference on Surface and Colloid Science (IACIS), Brazil, September 2003.
38 “Changing the World with the 7 Habits.” Department of Chemical Engineering, Bucknell
   University, January 2003.
39 “Molecular engineering of colloidal forces.” Department of Physics, Penn State
   University, October 2002.
40 “Measuring and modeling nanoparticle forces.” EPA Nanotechnology Grantees
   Conference, Environmental Protection Agency, Washington DC (Aug 2002).
41 “Does nanoscale charge nonuniformity control bulk colloidal behavior?”, Department of
   Chemical Engineering, West Virginia University, January 2001.
42 “Does nanoscale charge nonuniformity control bulk colloidal behavior?”, Department of
   Chemical Engineering, University of Colorado, December 2000.
43 “Does nanoscale charge nonuniformity control bulk colloidal behavior?”, Department of
   Chemical Engineering, Johns Hopkins University, October 2000.
44 “Does nanoscale charge nonuniformity control bulk colloidal behavior?”, Department of
   Chemical Engineering, University of Michigan, September 2000.
45 “How Does Charge Nonuniformity on Colloidal Particles Affect Bulk Behavior?”,
   Innovations Workshop, Particulates Materials Center, Penn State University, May 2000.
46 “Particle Dispersion and Rheology in Aqueous Media,” Chemicals and Polymers
   Roundtable, Air Products and Chemicals Incorporated, April 2000.
47 “How Does Charge Nonuniformity on Colloidal Particles Affect Bulk Behavior?”,
   National Meeting of the American Chemical Society, San Francisco, March 2000.
48 “Determing Cell Traction Forces of Fibroblasts on Collagen Gels,” Bioengineering
   Department, Penn State University, January 2000.
49 “Understanding Bulk Colloidal Behavior from Interparticle Forces,” Department of
   Chemical Engineering, Yale University, January 2000.
50 “Surprising Measurements of the Forces between Colloidal Particles,” Particulates
   Materials Center, Penn State University, June 1999.
51 “Determining Cell Traction Forces of Fibroblasts on Collagen Gels,” Department of
   Mathematics, University of Melbourne; Chemistry Department, University of Newcastle,
   March 1999.
52 “Measuring the Colloidal Forces between Two Brownian Particles,” Advanced Mineral
   Products Center (AMPC), University of Melbourne, March 1999.
53 “Determining the Forces between Colloidal Spheres Using Differential Electrophoresis,”
   1998 Victor K. La Mer Award Lecture, American Chemical Society Colloids and
   Surfaces Science Symposium, The Pennsylvania State University (State College), June
   1998.
54 “The Colloidal Forces between Polystyrene Latex Particles in Suspension,” Ian Wark
   Research Institute, University of South Australia (The Levels, Australia), April 1996.
55 “Determining the Forces between Colloidal Spheres Using Differential Electrophoresis,”
   Advanced Mineral Products Center (AMPC), University of Melbourne, January 1996.


                                                                                     12-17
   56 “Determining the Forces between Colloidal Spheres Using Electrophoresis,” Condensed
      Matter Physics Group (Department of Physics), Carnegie Mellon University, October
      1995.

Other conference papers presented by Velegol (many others by students/post-docs)
   1 “Sediments of soft spheres arranged by effective density.” American Chemical Society
      Colloids and Surface Science Symposium, McGill University, June 2011. (with coauthors
      Cesar Gonzalez Serrano and Joseph J. McDermott)
   2 “Magnetic enhancement of phototaxing catalytic motors.” American Chemical Society
      Colloids and Surface Science Symposium, McGill University, June 2011. (with coauthors
      Neetu Chaturvedi, Yiying Hong, Ayusman Sen)
   3 “Sorting Colloidal Particles: Thermodynamics or transport – which wins?” American
      Institute of Chemical Engineers Annual Meeting, Nashville, November 2009. (co authors
      Cesar Gonzalez Serrano, Joe McDermott, Kristi Weggener, Tawanna Hines)
   4 “Fabricating colloidal assemblies that undergo chemotaxis and phototaxis,” American
      Chemical Society National Meeting, Washington DC, August 2009.
   5 “Differences Between 2-Body and Multi-Body Van Der Waals Forces,” American
      Institute of Chemical Engineers Annual Meeting, Philadelphia, November 2008. (co
      author Milton Cole)
   6 “Rayleigh-Benard Instability in Sedimentation,” American Chemical Society Colloids
      and Surface Science Symposium, North Carolina State University, June 2008. (with
      coauthors Huda Jerri, Charles Snyder, and Shailesh Shori)
   7 “Controlling interparticle forces to guide colloidal assembly,” National Meeting of the
      American Chemical Society, Chicago, March 2007. (presented by Velegol).
   8 “Catalytic nanomotor modeling.” American Institute of Chemical Engineers Annual
      Meeting, San Francisco, November 2006. (coauthors Tim Kline, Paul Lammert,
      Ayusman Sen, Thomas Mallouk)
   9 “Modeling nanocolloidal van der Waals dispersion forces.” American Institute of
      Chemical Engineers Annual Meeting, San Francisco, November 2006. (co authors Hye-
      Young Kim, Jorge Sofo, Milton Cole, Amand Lucas)
   10 “Van der Waals forces between nanocolloids.” American Chemical Society Colloids and
      Surface Science Symposium, University of Colorado (Boulder), June 2006.
   11 “Colloidal atoms and molecules: design and fabrication”. Poster at Gordon Research
      Conference on Colloidal, Macromolecular, and Polyelectrolyte Solutions, Ventura CA
      (Feb 2006).
   12 “Synthesis of „colloidal molecules”. American Institute of Chemical Engineers Annual
      Meeting, Austin, November 2004.
   13 “Reducing nanoscale charge nonuniformity on PS Particles.” ELKIN 2004, Carnegie
      Mellon University, June 2004.
   14 “van der Waals forces between nanoclusters.” American Chemical Society Colloids and
      Surface Science Symposium, Yale University, June 2004. (with coauthors Mercedes
      Calbi, Silvina Gatica, Milton W. Cole)
   15 “Reducing nanoscale charge nonuniformity on PS Particles.” American Chemical
      Society Colloids and Surface Science Symposium, Yale University, June 2004. (with
      coauthor Jason D. Feick)
   16 “Bacterial Surface Nonuniformity Effects on Adhesion.” American Institute of Chemical
      Engineers Annual Meeting, San Francisco, November 2003. (with coauthor Joseph F.
      Jones).


                                                                                       13-17
17 “Reduction of Nanoscale Charge Nonuniformity by Temperature Annealing.” American
   Institute of Chemical Engineers Annual Meeting, San Francisco, November 2003. (with
   coauthor Jason D. Feick).
18 “Interparticle Forces for Clusters of Particles.” American Institute of Chemical Engineers
   Annual Meeting, San Francisco, November 2003. (with coauthor Gretchen L. Holtzer).
19 “Easily Implemented Ideas For Teaching Chemical Engineering.” American Institute of
   Chemical Engineers Annual Meeting, San Francisco, November 2003.
20 “Nanoscale charge nonuniformity on individual particles.” National Meeting of the
   American Chemical Society, New York, September 2003. (with coauthor Jason D.
   Feick).
21 “Molecular reduction of nanoscale charge nonuniformity.” American Chemical Society
   Colloids and Surface Science Symposium, Georgia Tech University (Atlanta), June 2003.
   (with coauthor Jason D. Feick)
22 “van der Waals forces between nanoclusters.” American Chemical Society Colloids and
   Surface Science Symposium, Georgia Tech University (Atlanta), June 2003. (with
   coauthors Mercedes Calbi, Silvina Gatica, Milton W. Cole)
23 “Colloidal stability in the presence of a polyelectrolyte depletant.” American Chemical
   Society Colloids and Surface Science Symposium, Georgia Tech University (Atlanta),
   June 2003. (with coauthor Gretchen L. Holtzer)
24 “Bacterial surface nonuniformity effects on adhesion,” National Meeting of the American
   Chemical Society, New Orleans, March 2003. (presented by coauthor Joseph F. Jones).
25 “Nanoscale charge nonuniformity on colloids in the presence of surfactants and
   polyelectrolytes,” National Meeting of the American Chemical Society, New Orleans,
   March 2003. (presented by coauthor Jason D. Feick).
26 “Measuring attractive forces between suspended nanoparticles,” National Meeting of the
   American Chemical Society, New Orleans, March 2003. (presented by coauthor Gretchen
   L. Holtzer).
27 “The importance of bacterial- and contact-surface properties on bacterial adhesion: The
   effects of hydrophobicity, surface charge, and steric effects,” National Meeting of the
   American Chemical Society, New Orleans, March 2003. (presented by coauthor Mike
   Salerno).
28 “Extending Differential Electrophoresis to Measure Nanoparticle Forces,” American
   Institute of Chemical Engineers Annual Meeting, Indianapolis, November 2002. (with
   coauthor Gretchen L. Holtzer).
29 “Nanoscale charge nonuniformity on colloids in the presence of surfactants and
   polyelectrolytes,” American Institute of Chemical Engineers Annual Meeting,
   Indianapolis, November 2002. (presented by coauthor Jason D. Feick).
30 “Extending differential electrophoresis to measure nanoparticle forces,” IEEE Nanotech
   2002 Conference, Washington DC, Aug 2002. (with coauthor Gretchen Holtzer)
31 “Controlling Surface Charge Nonuniformity on Colloidal Particles and Bacteria,”
   American Chemical Society Colloids and Surface Science Symposium, University of
   Michigan (Ann Arbor), June 2002. (presented by coauthor Jason D. Feick)
32 “Controlling forces between polystyrene latex particles,” American Chemical Society
   Colloids and Surface Science Symposium, University of Michigan (Ann Arbor), June
   2002. (with coauthors Prasanna K. Thwar and Gretchen Holtzer)
33 “Rotational electrophoresis can be used to measure charge nonuniformity,” American
   Institute of Chemical Engineers Annual Meeting, Reno, November 2001. (with coauthor
   Jason D. Feick)


                                                                                        14-17
34 “How do polyelectrolytes reduce the attractive forces between polymer colloids?”
   American Institute of Chemical Engineers Annual Meeting, Reno, November 2001. (with
   coauthor Prasanna K. Thwar)
35 “Measuring charge nonuniformity on bacteria,” National Meeting of the American
   Chemical Society, Chicago, August 2001.
36 “Polystyrene latex particles have significant charge nonuniformity,” poster at Gordon
   Research Conference (Polymer Colloids), Tilton NH, July 2001. (with coauthor Jason D.
   Feick)
37 “Rotational electrophoresis can be used to measure charge nonuniformity,” American
   Chemical Society Colloids and Surface Science Symposium, Carnegie Mellon University
   (Pittsburgh), June 2001. (with coauthor Jason D. Feick)
38 “Relating charge nonuniformity and colloidal stability,” American Chemical Society
   Colloids and Surface Science Symposium, Carnegie Mellon University (Pittsburgh), June
   2001. (with coauthors Prasanna K. Thwar and Jason D. Feick)
39 “Measurement of Charge Nonuniformity on Colloidal Particles,” American Institute of
   Chemical Engineers Annual Meeting, Los Angeles, November 2000. (with coauthor
   Jason D. Feick)
40 “Measuring Particle Size and Interparticle Gap with Nanometer Precision Using Optical
   Microscopy,” American Institute of Chemical Engineers Annual Meeting, Los Angeles,
   November 2000. (with coauthor Prasanna K. Thwar)
41 “Tangential Forces between Non-touching Colloidal Particles,” International Conference
   on Colloid and Interface Science (Bristol, England), July 2000.(with coauthors Sebastian
   Catana, John L. Anderson, and Stephen Garoff)
42 “Charge Nonuniformity on Colloidal Particles,” American Chemical Society Colloids
   and Surface Science Symposium, Lehigh University (Bethlehem, PA), June 2000. (with
   coauthor Jason D. Feick)
43 “Measured Estimates of Charge Nonuniformity on Polystyrene Latex Spheres,”
   American Institute of Chemical Engineers Annual Meeting, Dallas, November 1999.
   (with coauthor Jason D. Feick)
44 “Determining Cell Traction Forces of Fibroblasts on Collagen Gels,” American Institute
   of Chemical Engineers Annual Meeting, Dallas, November 1999. (with coauthors G.
   Steven Vanni and Frederick Lanni)
45 “Relating the Structural Rearrangement of Collagen Gels to Cell Traction Forces,”
   American Chemical Society Colloids and Surface Science Symposium, Massachusetters
   Institute of Technology (Boston), June 1999. (with coauthors G. Steven Vanni and
   Frederick Lanni)
46 “The Cell Traction Forces between Fibroblasts and Collagen Gels,” American Institute of
   Chemical Engineers Annual Meeting, Miami Beach, November 1998. (with coauthors
   Frederick Lanni and G. Steven Vanni)
47 “The Mechanical Properties of Collagen Gels,” American Chemical Society Colloids and
   Surfaces Science Symposium, The Pennsylvania State University (State College), June
   1998. (with coauthor Frederick Lanni)
48 “The Forces between Silica Particles and Polystyrene Latex Particles,” American
   Institute of Chemical Engineers Annual Meeting, Los Angeles, November 1997. (with
   coauthors John L. Anderson and Stephen Garoff)
49 “The Forces between Silica Particles and Polystyrene Latex Particles,” American
   Chemical Society Colloids and Surfaces Science Symposium, University of Delaware
   (Newark), June 1997. (with coauthors John L. Anderson and Stephen Garoff)


                                                                                      15-17
   50 “Determining the Forces between Latex Particles Using Differential Electrophoresis,”
      American Institute of Chemical Engineers Annual Meeting, Chicago, November 1996.
      (with coauthors John L. Anderson and Stephen Garoff)
   51 “Electrophoretic Rotation of Colloidal Doublets,” American Institute of Chemical
      Engineers Annual Meeting, Chicago, November 1996. (with coauthors Yuri
      Solomentsev, John L. Anderson, and Steven L. Carnie).
   52 “An Experimental Determination of the Tangential and Normal Forces between Colloidal
      Spheres,” 1st Australian Surface Force Symposium, Blackwood (Victoria, Australia),
      February 1996. (with coauthors John L. Anderson and Stephen Garoff)
   53 “Determining the Rigidity of Colloidal Doublets Using Electrophoretic Rotation,”
      American Institute of Chemical Engineers Annual Meeting, Miami Beach, November
      1995. (with coauthors John L. Anderson and Stephen Garoff)
   54 “Electrophoretic Rotation of Doublets: A Probe of Structure,” American Chemical
      Society Colloids and Surfaces Science Symposium, University of Utah (Salt Lake City),
      June 1995. (with coauthors John L. Anderson and Stephen Garoff)

Teaching
 Courses taught: ChE 320 (Equilibrium thermodynamics), ChE 350 (Heat Transfer), ChE 407
   (Senior Unit Operations Lab, now ChE 480), ChE 451 (Process Control), ChE 452 (Chemical
   Process Safety and Control), Chem 497A (now Chem 466, Molecular Thermodynamics),
   ChE 497A (Physics of Community), ChE 528 (Colloids and Nanocolloids), ChE 597a
   (Electrochemical Engineering).
 Chem 497A (now Chem 466): Molecular Thermodynamics. This course introduces
   Chemical Engineering undergrads to molecular thinking and how atomic and molecular
   phenomena lead to macroscopic consequences. Using statistical thermodynamics, lattice
   models, and other dynamics equations, the students see how quantum mechanics, Brownian
   motion, and transition state theory lead to measurable parameters like heat capacity,
   conductivity, diffusion coefficients, and reaction rate constants.
 ChE 528: Colloids and Nanocolloids. This course introduces students to essential theory in
   colloidal synthesis, hydrodynamics, interparticle forces, stability, rheology, characterization,
   and assembly. We use physics ranging from quantum to continuum, and various chemistry
   sources.
 ChE 497a: Physics of Community. Based on independent study since 1991, unrelated to his
   colloids research efforts, Velegol taught this course about “designing” communities,
   learning, motivation, trust, courage, creativity and other human aspects.
 ChE 597a: Electrochemical Engineering. This course was co-taught with Mike Janik, and it
   is a new course in our department.


Major committee work at Penn State
Chemical Engineering ABET Coordinator, 2009 – present
Chemical Engineering Undergraduate Program Coordinator, 2009 – 2011
College of Engineering Sabbatical Leave Committee, 2009-2010
Schreyer Honors College, Faculty Advisory Committee, 2009 – present
Schreyer Honors College, Faculty Selection Committee, 2009-present
College of Engineering Research Symposium, Judge 2009
Penn State Goldwater Selection Committee, January 2009
Faculty Committee for Engaged Scholarship in Philadelphia, 2008 – present
College of Engineering Sabbatical Review Committee 2008 (for 2009-2010 sabbaticals)

                                                                                              16-17
College of Engineering 5-year Strategic Plan Committee for Health Sciences and Medicine
(2007-2008)
Chemical Engineering ABET Assessment Committee (June 2006 – present)
Chemical Engineering Graduate Studies Committee (2005 – present)
Chemical Engineering Chaired Professorships Committee (2005 – present)
Chemical Engineering Department Head Search Committee (August 2004 – 2005)
Environmental Education Task Force (November 2003 – Dec 2004)
College of Engineering Faculty Council (September 2004 – December 2006)
       Graduate Studies & Research Sub-Committee (August 2004 – December 2006)
       Chair of Graduate Studies & Research Committee (August 2005-December 2006)
Environmental Institute Advisory Board (August 2000 – present)
Chemical Engineering Faculty Search Committee (August 2000 – 2001)
Chemical Engineering Grad Recruiting & Admissions, Chair (May 2000 – May 2004)
Chemical Engineering Graduate Awards Committee (September 1999 – 2001)

Penn State organizations
Presidential Leadership Academy Mentor, 2010 – present.
Faculty Fellow, Laboratory for Public Scholarship & Democracy, “A capacity to sustain”, 2008.
Committee for Engaged Scholarship in Philadelphia, 2008 – present.
College of Engineering Environmental Institute (Aug 2000 – present)
Life Sciences Consortium (May 2000 – present)
Particulate Materials Center (Dec 1999 – present)
Materials Research Institute (2003 – present)

Other service
Urban Sustainability Leadership Academy, Advisory Council (Jan 2010 – ).
American Chemical Society Symposium organizer (with Maria Santore), “Patchy Particles and
Surfaces”, Washington DC, August 2009.
American Chemical Society LaMer Award Selection Chair (Jul 2005 – Jul 2008)
Organizer, NSF Nanoscale Grantees Conference, 4-6 December 2006 (roughly 200 participants)
Guest Editor, Colloids & Surfaces A, 5 Oct 2005 edition
Editorial Advisory Board of Langmuir (Jan 2005 – present)
American Chemical Society LaMer Award Selection Committee (Jul 2001 – Jul 2003)
ACS, Continuing Symposium Chair (Colloids & Surface Science), 2000-2008
American Chemical Society Symposium organizer (with Bruce Logan), “Bacterial adhesion”,
New Orleans, March 2003.
American Chemical Society Symposium organizer (with Kristen A. Fichthorn), “Nanocolloid
forces and stability”, New York, September 2003.
American Chemical Society Symposium organizer (with Sharon Glotzer and Mike Solomon),
“Colloidal atoms and Molecules”, Chicago, 24-25 March 2007.




                                                                                         17-17

								
To top