Presentations

Understanding or Memorization: Are we Teaching the Right Thing?, at NES AAPT/APS Meeting, Harvard University (Cambridge, MA), Friday, April 1, 1994
Classtalk at Harvard: An update, at Classtalk Workshop (Williamsburg, VA), Sunday, May 1, 1994
Teaching Science in the Large Section, at Seminar on Teaching the Large Section, Brigham Young University (Provo, UT), Wednesday, May 18, 1994:
talk_1122.pdf
Peer Instuction: Stimulating Renewed Interest in Physics and Other Engineering Courses, at NSF Project Impact: Disseminating Innovation in Undergraduate Education (Arlington, VA), Wednesday, June 1, 1994
Ultrafast initiation of surface photoreactions, at OSA Annual Meeting (Dallas, TX), Saturday, October 1, 1994
Understanding or Memorization: Are we Teaching the Right Thing?, at Cottrell Scholars Conference (Tucson, AZ), Sunday, January 1, 1995
Interaction of ultrashort laser pulses with solids, at Adriatico Research Conference on Chaos in Atomic and Molecular Systems, International Center of Theoretical Physics (Trieste, Italy), Tuesday, July 18, 1995
Scientific elite or outcast?, at White House Forum "Making it happen: First in the World", Office of Science and Technology Policy, White House (Washington, DC), Wednesday, July 26, 1995
Femtosecond surface photochemistry: what is the role of the substraste electrons?, at Femtochemistry: The Lausanne Conference (Lausanne, Switzerland), Thursday, September 7, 1995
We studied the femtosecond laser-induced desorption of O2 and production of CO2 from a CO/O2/Pt(111) surface at 90K. The reaction pathway with 0.3-ps laser pulses is very different from that with nanosecond or continuous wave irradiation.[1,2] Our experiments address both the excitation excitation mechanism and the chemical pathway leading to O2 desorption and CO2 production using femtosecond laser pulses. When the fluence is below 10 µJ/mm2 the yields of O2 and CO2 vary linearly with laser fluence. Above 10 µJ/mm2 the yield is highly nonlinear in the fluence. The transition indicates a... Read more about Femtosecond surface photochemistry: what is the role of the substraste electrons?
Scientific elite or outcast?, at Hearing on Disciplinary Perspectives of National Leaders in Undergraduate Education, National Science Foundation (Arlington, VA), Monday, October 23, 1995
Bandgap collapse in photoexcited GaAs, at MRS Fall Meeting (Boston, MA), Friday, December 1, 1995
Phase transitions induced by femtosecond laser pulses, at International Workshop on Femtosecond Technology (Tsukuba, Japan), Thursday, February 22, 1996:
talk_184.pdf
Understanding or Memorization: Are we Teaching the Right Thing?, at 33rd Conference of the Pacific Northwest Associations of College Physics, Green River Community College (Auburn, WA), Saturday, March 30, 1996
Understanding or Memorization: Are we Teaching the Right Thing?, at Symposium on Implementing Reform in Mathematics, Engineering, and the Sciences (Scottsdale, AZ), Saturday, June 8, 1996
Collaborative learning at Harvard University: Peer Instruction, at NSF Shaping the Future Conference, American Academy of Sciences (Washington, DC), Friday, July 12, 1996:
talk_1121.pdf
Surface femtochemistry of oxygen and coadsorbates on Pt(111), at Nobel Symposium (Svarta, Sweden), Tuesday, September 10, 1996
Ultrafast laser-induced structural changes in semiconductors, at 28th Annual Boulder Damage Symposium (Boulder, CO), Wednesday, October 9, 1996
Understanding or Memorization: Are we Teaching the Right Thing?, at AAPT New Faculty Workshop, American Center for Physics (Washington, DC), Thursday, October 31, 1996
Understanding or Memorization: Are we Teaching the Right Thing?, at Faculty Forum Satellite Broadcast, National Technological University (Fort Collins, CO), Tuesday, November 12, 1996
Signs that introductory physics course can lead to frustration (both for students and faculty) abound. A major problem is that traditional lectures in introductory science frequently fail to stimulate students to further study. Many (if not most) students concentrate on problem-solving without paying sufficient attention to the underlying concepts. Physics is then reduced to a set of recipes, or "problem solving strategies" are they are called in text books. The remaining, purely mechanical material is uninteresting and the apparent lack of any underlying consistency or logic leads to... Read more about Understanding or Memorization: Are we Teaching the Right Thing?
Ultrafast laser-induced structural and electronic changes in solids, at PIERS 1997 (Hong Kong), Tuesday, January 7, 1997:
talk_210.pdf
For over two decades the subject of laser-induced phase transitions in semiconductors has generated considerable interest. This interest is due to the technological importancee of semiconductors and the research in this field was in part driven by the hope of developing better methods for the annealing of ion-implated semiconductors. More recently, femtosecond laser pulses have made it possible to study highly non-equilibrium electron and lattice dynamics in seminconductors. In this talk we first present an overview of work on laser-induced structural and electronic changes in solids, and... Read more about Ultrafast laser-induced structural and electronic changes in solids

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