Bulletin of the American Physical Society
Fall 2010 Meeting of the New England Section of APS
Volume 55, Number 13
Friday–Saturday, October 29–30, 2010; Providence, Rhode Island
Session F1: Plenary Session II |
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Room: Barus and Holley 166 |
Saturday, October 30, 2010 10:00AM - 10:45AM |
F1.00001: What Are Students Learning, and From What Activity? Invited Speaker: What knowledge are students learning? If so, what instructional activities are they learning from? What student habits are helpful or detrimental to learning? What learning do they remember at graduation? We must be able to answer these questions in order to improve our educational process scientifically. Fortunately the use of electronic tutors and electronic data recording in more traditional courses makes available data that answer some of these questions. I will also describe a software tutor that really helps students learn. Finally I shall address a key question - what do we really want students to learn? Given that most teachers want students to become more expert-like, I will describe a pedagogy, ``Modeling Applied to Problem Solving" that has achieved this result. These studies were done in introductory college physics. For a preview of the research see http://relate.mit.edu [Preview Abstract] |
Saturday, October 30, 2010 10:45AM - 11:30AM |
F1.00002: Optically-directed Nanobiomedicine: merging nanotechnology with light for improved diagnostics and new therapeutics Invited Speaker: Just beyond the wavelengths of visible light, the near infrared region of the optical spectrum provides a window into the human body. In this region of the spectrum, known as the ``water window", light penetrates several inches into body, making virtually all soft tissue of the body optically accessible. This has opened up the possibility of developing optical addressable diagnostic methods, devices, even therapies that are essentially noninvasive. An example of this is Optical Coherence Tomography, an emerging technology useful for near infrared imaging of tumors. Our work over the past several years has involved the development of nanoshells, a plasmonic nanoparticle we designed that selectively absorbs or scatters light in this special wavelength region. We have developed a suite of applications for plasmonic nanoparticles to address challenges in human health that include drug and gene delivery, enhancing the resolution of bioimaging modalities, and a novel, nanoengineered cancer therapy, currently in clinical trials. In my talk I will describe the physical principles behind these applications, and why this approach may expand our vision for combating disease and improving human health. [Preview Abstract] |
Saturday, October 30, 2010 11:30AM - 12:15PM |
F1.00003: Plasmonic Nanostructures: Artificial Molecules Invited Speaker: The recent observation that metallic nanoparticles possess plasmon resonances that depend sensitively on the shape of the nanostructure has led us to a fundamentally new understanding of the plasmon resonances supported by metals of various geometries. This picture- ``plasmon hybridization",\footnote{H. Wang et al., Acct. Chem. Res. 40(2007)53} reveals that the collective electronic resonances in metallic nanostructures are mesoscopic analogs of the wave functions of simple atoms and molecules, interacting in a manner that is analogous to hybridization in molecular orbital theory. The new theoretical insight gained through this approach provides an important conceptual foundation for the development of new plasmonic structures that can serve as substrates for surface enhanced spectroscopies and subwavelength plasmonic waveguiding and other applications. The talk is comprised of general overview material of relevance for chemical applications interspersed with a few more specialized ``hot topics" such as plasmonic interference effects,\footnote{J.A. Fan et al., Science 328(2010)1135, J.B. Lassiter et al., Nano Lett. 10(2010)3184} Quantum effects,\footnote{J. Zuloaga et al., Nano Lett. 9(2009)887, ACS Nano 4(2010)ASAP} and single molecule SERS and LSPR sensing.\footnote{D. Ward et al., Nano Lett. 8(2008)919, K.S. Mayer et al., Nanotechnology 21(2010)255503} [Preview Abstract] |
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