Bulletin of the American Physical Society
9th Annual Meeting of the Northwest Section of the APS
Volume 52, Number 6
Thursday–Saturday, May 17–19, 2007; Pocatello, Idaho
Session A1: Plenary Session I |
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Chair: Francesca Sammarruca, University of Idaho Room: PSUB Salmon River Room |
Friday, May 18, 2007 8:30AM - 8:35AM |
A1.00001: Welcoming Remarks, ISU
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Friday, May 18, 2007 8:35AM - 9:11AM |
A1.00002: Thermodynamics and Structure of One Monolayer of Simple Atoms Absorbed on Carbon Nanotube Bundles Invited Speaker: Following the discovery and production of carbon nanotube bundles more than fifteen years ago, ideas about the properties of one-dimensional (1d) lines of atoms which could be formed in or on interstitials or grooves in the bundles were either revisited or generated for the first time. It is well known that in an infinite ideal 1d system there is no long range order and no phase coexistence, an argument first put out by Peierls and discussed in Landau and Lifschitz text. Nevertheless, the possibility of forming finite length 1d chains of atoms with gaseous, fluid, or solid properties, and no phase transitions, was intriguing. The fact that the outside surface of the bundles is a curved basal plane of graphite (graphene) is also interesting, because if films could be grown starting on grooves on the outside of the bundles those lines will grow, eventually, onto the graphene to form long and narrow quasi 2d systems to be compared to those adsorbed on flat basal plane graphite. In this experimental talk I will introduce the subject and some of the techniques used, emphasizing results on two of the simplest physisorbed atoms, $^{4}$He and Ne. The He atom has been studied with DC and AC calorimetry, adsorption isotherms, and neutron diffraction, while Ne is currently being studied with thermodynamic measurements. Ideas from current and future experiments will conclude the presentation. The current work is being done in collaboration with Subramanian Ramachandran, Zenghui Wang and David Cobden. [Preview Abstract] |
Friday, May 18, 2007 9:11AM - 9:47AM |
A1.00003: Making a Living, Real Life Physics, Semiconductors and Jobs Invited Speaker: The Semiconductor Industry started from the triumph of Physics and has grown to be the basis for almost all significant High Technology industries. The industry is expected to achieve {\$}300B in overall revenues this decade, but, we see signs that growth has slowed and the industry is maturing. What has changed in my company over the last quarter century? Can we extrapolate to what this might mean for Semiconductor manufacturing, research and development and future job potential? What fields of study will be the future in Semiconductors? Will outsourcing drive opportunities away from the US and into China and India? I will touch on the general trends that I see in the industry and the role that Physicists may play in the future. [Preview Abstract] |
Friday, May 18, 2007 9:47AM - 10:23AM |
A1.00004: Dephasing of Light Hole and Heavy Hole Excitons in GaAs Wells Invited Speaker: |
Friday, May 18, 2007 10:23AM - 10:45AM |
A1.00005: Coffee Break
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Friday, May 18, 2007 10:45AM - 11:21AM |
A1.00006: The Value and Use of Demonstrations Invited Speaker: |
Friday, May 18, 2007 11:21AM - 11:57AM |
A1.00007: WMAP and Cosmic Structure: Beginning to Constrain Inflation Invited Speaker: |
Friday, May 18, 2007 11:57AM - 12:33PM |
A1.00008: Recent Results from the Babar Experiment Invited Speaker: CP violation, first observed 43 years ago in the neutral kaon system, has now also been observed in one more system: the B meson system. Big Bang theories in particle astrophysics tend to predict equal quantities of matter and antimatter in our universe, and understanding CP violation and its origins will be a key element in understanding the matter-antimatter asymmetry of our universe. Our Standard Model of Particle Physics has been a triumph of particle physics - but it has a shortcoming: it accommodates CP violation, but apparently at a level orders of magnitude too small to explain the matter-antimatter asymmetry of our universe. As we enter the final years of the 15-year BaBar physics program at the Stanford Linear Accelerator Center (SLAC) B Factory, we have a B meson sample of almost 400 million and are on track to more than double our data sample before we complete data-taking in the autumn of 2008. We have examined and tested CP violation and the electroweak sector of Standard Model of Particle Physics to excruciating precision. An overview of the BaBar experiment, recent results and outlook will be presented. [Preview Abstract] |
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