Bulletin of the American Physical Society
76th Annual Meeting of the Southeastern Section of APS
Volume 54, Number 16
Wednesday–Saturday, November 11–14, 2009; Atlanta, Georgia
Session CB: Novel Materials, Nanoscale Devices and Applications |
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Chair: A.G. Unil Perera, Georgia State University Room: Frankfurt |
Thursday, November 12, 2009 10:45AM - 11:15AM |
CB.00001: Solar Power for Microautonomus Systems Invited Speaker: |
Thursday, November 12, 2009 11:15AM - 11:45AM |
CB.00002: Controlling, modulating, and monitoring the electronic and mechanical properties of molecular junction devices at single-molecule level Invited Speaker: Molecular electronics, where single molecules are used as devices- molecular wires, rectifiers and transistors - is a topic of considerable interest at present. Although substantial efforts are being made to bring the ideas of molecular devices into reality, this field is still somewhat futuristic and need further experimental and theoretical investigation. Future experimental techniques that can fabricate molecular junction devices with molecule electrode contacts that are well defined on the atomic scale and that can characterize the atomic-scale structures of the molecule-electrode contacts with more efficient and more precise control of electron transport will contribute enormously to the field of molecular electronics. We will describe highly integrated and effective methods to simultaneously fabricate, control and modulate, and monitor the electronic and mechanical properties of molecular junction devices at the single-molecule level. The simultaneity will minimize variations normally occur in individualized approaches and thus offer more detailed information and greater understanding of molecular junctions and of processes. Various molecule systems will be discussed. [Preview Abstract] |
Thursday, November 12, 2009 11:45AM - 12:15PM |
CB.00003: Thermophysical Properties of Nanowires, Nanotubes, and Nanoribbons Invited Speaker: Thermal transport through various kinds of nanowires, nanotubes, and nanoribbons has attracted significant attention over the past a few years because of the intriguing nano-confinement effects on the energy carriers, which can lead to novel thermophysical properties that are promising for practical applications such as thermoelectrics. Compared to measurements performed on ensembles of nanostructures, measurements of thermophysical properties of individual nanostructures can eliminate uncertainties from the morphology variation of the nanostructures. However, measurements of the thermophysical properties of individual nanostructures pose a significant challenge because of the low thermal conductance of individual nanostructures and the fact that there is no thermal insulator. We have successfully developed a suspended microdevice with integrated resistance heaters and thermometers and applied it to study thermophysical properties of various kinds of individual nanowires, nanotubes and nanoribbons. Measurement results indicate interesting confinement effects on the transport of energy carriers in these nanostructures. [Preview Abstract] |
Thursday, November 12, 2009 12:15PM - 12:45PM |
CB.00004: Small Is Different: Emergent Phenomena at the Nonscalable Size Regime Invited Speaker: When the scale of materials structures is reduced to the nanoscale, emergent physical and chemical behavior often occurs, that is not commonly expected, or deduced, from knowledge learned at larger sizes. Such new behavior may be found when the size of the interrogated physical system becomes comparable to a phenomena-dependent characteristic length-scale; for example, the width of a quantum wire approaches the Fermi wave- length of the conducting electrons, or the dimensions of a liquid bridge, or a nanojet, approach the wave-length of a hydrodynamical instability underlying collapse or droplet ejection. Using computer-based simulations we highlight and discuss such emergent phenomena. Systems that we discuss include: electrons in 2D semiconductor quantum dots, nanoscale junctions, liquid bridges and jets, and interfacial control of the chemical catalytic properties of surface-supported gold nanoclusters. [Preview Abstract] |
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