Bulletin of the American Physical Society
Fall 2009 Meeting of the Four Corners Section of the APS
Volume 54, Number 14
Friday–Saturday, October 23–24, 2009; Golden, Colorado
Session L1: Awards and Plenary Session III |
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Chair: David Kieda, University of Utah Room: Green Center Metals Hall |
Saturday, October 24, 2009 3:30PM - 4:06PM |
L1.00001: Research Opportunities at LANSCE in Neutron Scattering: The Legacy of Louie Rosen Invited Speaker: Many are surprised to know that the Four Corners Region is a powerhouse in neutron scattering, and the future portends increased competitive advantage for those who use the Lujan Neutron Scattering Center at LANSCE. Connected to the world's first---and until 2010 the world's only---megawatt proton accelerator, the Lujan Center has one of the highest intensity neutron pulses in the world. Its suite of 14 instruments offers 11 materials research stations and 3 stations for nuclear physics. Importantly, the Enhanced Lujan Program scheduled for 2010-2014 will see a doubling in science capacity and quality as new instrument concepts are realized. The general user community is encouraged to become involved with instrument concept development. This presentation is dedicated to Louie Rosen, the father of the LANSCE accelerator, who passed away in August 2009. [Preview Abstract] |
Saturday, October 24, 2009 4:06PM - 4:42PM |
L1.00002: Tunable Terahertz Metamaterials Invited Speaker: In recent years terahertz (1 THz = $10^{12}$ Hz) technology has become an optimistic candidate for numerous sensing, imaging, and diagnostic applications. Nevertheless, THz technology still suffers from a deficiency in high-power sources, efficient detectors, and other functional devices ubiquitous in neighboring microwave and infrared frequency bands, such as amplifiers, modulators, and switches. One of the greatest obstacles in this progress is the lack of materials that naturally respond well to THz radiation. The potential of metamaterials for THz applications originates from their resonant electromagnetic response, which significantly enhances their interaction with THz radiation. Thus, metamaterials offer a route towards helping to fill the so-called ``THz gap.'' In this work we present a series of novel planar THz metamaterials. Importantly, the critical dependence of the resonant response on the supporting substrate and/or the fabricated structure enables the creation of active THz metamaterial devices. We show that the resonant response can be controlled using optical or electrical approaches, enabling efficient THz switches and modulators which will be of importance for advancing numerous real world THz applications. [Preview Abstract] |
Saturday, October 24, 2009 4:42PM - 5:12PM |
L1.00003: Awards Presentation Jean-Francois van Huele . [Preview Abstract] |
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