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Introduction to Physics at SFU Outline •Why study physics •What courses do I need to take Levitation above a superconductor •What by kmb15358

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									Introduction to Physics at SFU
         Outline:
 •Why study physics?
 •What courses do I need to take?         Levitation above a
                                          superconductor
 •What are SFU’s degree programs?
 •What do students do after graduation?
 •Semiconductor research at SFU
 •Fun demos


        Atomic terraces near              300GHz transistor
        semiconductor screw
        dislocation
 Why study physics?

Number 1: Physics is fun!
Number 2: Physics is useful!
Number 3: Physicists get jobs!
Number 4: Physics is beautiful!

       Schroedinger Wave Equation:

  h2 ∂ 2                      h∂
−        Ψ + V ( x, t ) Ψ = −      Ψ
  2 m ∂x                      i ∂t
          Feynman Diagrams:
What courses do I need?
 •Physics 12
 •Chemistry 12
 •Math 12
 •Calculus 12 (Recommended)
    New First Year Physics Course Options at SFU
Advanced: PHYS 125/126
Designed for those students who excel in mathematics and physics and
who are comfortable with the material presented in Physics 12 and
Mathematics 12, this stream will introduce students to the approach that
professional physicists use to understand nature. A grade of ‘A’ in both
Physics 12 and Mathematics 12 is a prerequisite for this stream.

Life Sciences: PHYS 101/102
Designed for those who wish to specialize in bioscience or kinesiology, or
who ultimately desire a career in the health sciences.

Standard: PHYS 120/121
Designed for all other students who want to take a general, introductory
physics course. Students who know that their academic futures will
require a strong background in physics even though they may be leaning
towards a major in areas such as chemistry, molecular biology, earth
sciences or environmental science should select this stream.
Physics Degree Programs:
•Physics (Honours, Major, and Minor)
•Applied Physics (Honours and Major)
•Mathematical Physics (Honours only)
•Chemical Physics (Honours and Major)
•Physics and Physiology (Honours only)
•Nuclear Science (Minor)


Major: 120 credit hours, minimum CGPA=2.0 (C)
Honours: 132 credit hours, minimum CGPA=3.0 (B)
Minor: 14 upper division credit hours + prerequisites
Access to teaching and research labs
           Physics Coop Program

•Combines academic studies with related work
experience
•Student spends four semesters off campus in study-
related jobs.
•Arrangements for work experiences are made through
the Science and Environment Co-operative Education
Program .
•Physics students find co-op positions in high tech
industry, government labs, and university research labs
Physics Coop Employers
 •TRIUMF
 •E-One Moli Energy
 •Ballard Technologies
 •SFU Physics Department
 •CreoScitex Products
 •3M Touch Systems
 •National Research Council
 •Nortel Networks
 •Vortek Industries
 •Lightyear Technologies
 •Eagle-Picher Energy
 •WCB
 •Process Simulations Ltd.
 •QuestAir Technologies
 •Shaw Cable Systems
   What students do after they graduate:
American Physical Society surveys:

-40% enter job market
-40% physics graduate school
-20% other grad. school or professional programs
 Sector of Employment by level of highest physics degree
 1994 (Source American Institute of Physics)

Employment          Bachelors (%)   Masters      PhD (%)
sector                               (%)
Industry
                         42            33           21
Private sector
(small companies,        19            27            9
consulting)
Government
                         21            18           23
Academic
                         11            17           42
Other
                         7             5             5
Graduate Profile:   “I joined Xantrex in August 1997 as
                    an Applications Engineer. After
                    about a year I moved into
                    management and currently I'm the
                    Director of Sales for our
                    Commercial Market segment with
                    responsibility of running a multi-
                    million dollar segment of our
                    business. My team is responsible
                    for marketing and selling advanced
                    power electronic options for heavy
                    duty trucks; telecom, utility and
Rich Gaudet         cable fleet service trucks;
1997 BSc,           emergency vehicles; military
Physics Major       applications and into the
                    automotive segment.“
Graduate Profile
                   “I graduated in the summer of
                   2000 with a major in math and
                   minor in physics. In the Fall of
                   2000, I started PDP - and the
                   following year (the fall of 2001)
                   I started teaching high school
                   Math and Physics at
                   Archbishop Carney
                   Secondary in Port Coquitlam
                   (http://www.acrss.org).”
Monique
Leathem
BSc 2000
Mathematics
Major, Physics
Minor
   Graduate Profile:
                         “I started at Creo in 1999, and
                         my current position is Product
                         Development Physicist. I work
                         with a team of 20 engineers and
                         physicists developing laser
                         imaging systems for the graphic
                         arts. I perform prototype
                         development/testing for a key
                         optical subassembly of the
Charlie Asman            device.”
1997 BSc Honours
Mathematical Physics
1999 MSc Physics (UBC)   Note: CREO has hired
                         many SFU graduates over
                         the years.
Graduate Profile       Assistant Professor
                       Department of Physics and
                       Astronomy
                       McMaster University


                       Research Areas:
                       Experimental Quantum
                       Information Processing,
                       Quantum State Engineering,
                       Ion Trapping, Experimental
Brian King, B.Sc.      Atomic Physics
Honours Mathematical
Physics, SFU, 1992
 Semiconductor Research at SFU
    Semiconductor physics impacts your life!



•Cell phones: heterojunction bipolar transistors (HBT)
•Computers: Metal-oxide field effect transistors (MOSFET)
•CD players: Quantum well laser diodes
•Red, green, blue and white light emitting diodes (LED)
•GPS receivers: High electron mobility transistors (HEMT)
 OMVPE
 crystal growth:

OMVPE=
Organometallic
Vapour Phase
Epitaxy


            Ga-(CH3)3                      AsH3

• transport of organometallic
precursors to surface
• adsorption
• surface diffusion
• step growth


             Slide courtesy Oliver Pitts
Semiconductor Growth Reactor




                      Growth Chamber
Ultrathin Quantum Wells




                   Slide courtesy Oliver Pitts
     X-ray Diffraction

                         Bragg’s Law:

                                     nλ
                         sin(θ B ) =
                                     2d



Information Given:

•Layer thicknesses
•Atomic plane spacing
•Material composition
Atomic Force Microscopy




                      Slide courtesy Oliver Pitts
Semiconductor Crystal Screw Dislocation

 Atomic Force
 Microscope Image




Each step represents
one atomic plane of
an InAs crystal
Device Fabrication at SFU
  300GHz Transistor Layer Structure


     InGaAs:S contact layer n~3E19 cm-3
InP:S heavily contact doped layer, n~3E19 cm-3
       InP:S emitter, 70nm, n~5e17 cm-3
     GaAsSb:C base 20 nm, p=8e19 cm-3
      InP collector, 200 nm, n~1E16 cm-3
  InGaAs:S subcollector, 50nm, n~3E 19 cm-3
InP:S heavily doped layer 500nm, n~3E 19 cm-3
             InP:Fe (001) substrate
Large area transistor:




 300GHz transistor:
    DEMO: Levitation by the Meissner Effect

A magnetic hovers in mid air above a superconductor due to the fact
that magnetic flux lines cannot penetrate a superconductor
Resources:

To download this presentation, go to www.sfu.ca/~simonw
Physics Department Website: www.sfu.ca/physics

Physics Office:
Room: P8428, Shrum Science Building
Telephone: (604) 291 4464

Undergraduate Advisor:        Prof. Mike Vetterli
Email: vetm@triumf.ca         Phone: (604) 291-5488

High School Liason:           Prof Simon Watkins
Email: simonw@sfu.ca          Phone: (604) 291-5763

Canadian Association of Physicists Careers Website:
www.cap.ca/careers

								
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