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Topic Area: Nanophysics
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1. Strong Casimir force reduction by metallic surface nanostructuring
Topic: Nanophysics
Published: 9/27/2013
Authors: Francesco Intravaia, Stefan T. Koev, Il Woong Jung, Albert A. Talin, Paul S Davids, Ricardo Decca, Vladimir A Aksyuk, Diego A. R. Dalvit, Daniel Lopez
Abstract: The Casimir force is a quantum-mechanical interaction arising from vacuum fluctuations of the electromagnetic (EM) field and is technologically significant in micro- and nanomechanical systems. Despite rapid progress in nanophotonics, the goal of e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910133

2. Studies of photoconductivity and FET behavior in examining drift mobility, surface depletion, and transient effects in Si-doped GaN nanowires examined in vacuum and air
Topic: Nanophysics
Published: 5/3/2013
Authors: Norman A Sanford, Lawrence H Robins, Paul Timothy Blanchard, K. Soria, B. Klein, Kristine A Bertness, John B Schlager, Aric Warner Sanders
Abstract: Variable intensity photoconductivity (PC) performed under vacuum at 325 nm was used to estimate drift mobility and negative surface charge density sigma for c-axis oriented Si-doped GaN nanowires (NWs). In this approach we assumed that sigma was res ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912467

3. Characterizing Equilibrium in Epitaxial Growth
Topic: Nanophysics
Published: 2/20/2012
Authors: Paul Nathan Patrone, Russel Caflisch, Dionisios Margetis
Abstract: Using a kinetic model of epitaxial growth, we describe how geometry controls kinetic pathways through which external deposition influences the state of a vicinal surface. The state of the surface is determined by three key, adjustable parameters: th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909660

4. Effect of elastic deformation on frictional properties of few-layer graphene
Topic: Nanophysics
Published: 1/9/2012
Authors: Alexander Y. Smolyanitsky, Jason Philip Killgore, Vinod K Tewary
Abstract: We describe the results of Brownian dynamics (BD) simulations of an AFM tip scanned on locally suspended few-layer graphene. The effects of surface compliance and sample relaxation are directly related to the observed friction force. We demonstrate t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909404

5. Enhanced coupling between light and surface plasmons by nanostructured Fabry-Pérot resonator
Topic: Nanophysics
Published: 9/26/2011
Authors: Brian S. Dennis, Vladimir A Aksyuk, Michael Haftel, Stefan T. Koev, Girsh Blumberg
Abstract: It is recognized that surface plasmons (SPs),which can be present on particulate, smooth, or corrugated metallic surfaces, have enormous potential in the fields of novel nano-optical and opto-electronic devices, as well as in spectroscopic, biologic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907837

6. Electromagnetic Energy Density in Dispersive and Dissipative Media
Topic: Nanophysics
Published: 6/1/2011
Authors: Frederico D. Nunes, Thiago Vasconcelos, Marcel Bezerra, John Weiner
Abstract: The description of the energy density associated with an electromagnetic field propagating through matter must treat two different phenomena: dispersion, the variation of the refractive index with frequency, and dissipation, the loss of field energy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906602

7. Landau Levels and Band Bending in Few-Layer Epitaxial Graphene
Topic: Nanophysics
Published: 4/18/2011
Authors: Hongki Min, Shaffique Adam, Young J. Song, Joseph A Stroscio, Mark D Stiles, Allan H. MacDonald
Abstract: The carrier density distributions in few-layer-graphene systems grown on the carbon face of silicon carbide can be radically altered by the presence of a Scanning Tunneling Microscope (STM) tip used to probe top-layer electronic properties, and by ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907652

8. Effects of Edge Magnetism and External Electric Field on Energy Gaps in Multilayer Graphene Nanoribbons
Topic: Nanophysics
Published: 9/14/2010
Authors: Bhagawan Sahu, Hongki Min, Sanjay K Banerjee
Abstract: Using a first principles density functional theory, we study electronic structure of multilayer graphene nanoribbons as a function of the ribbon widths and an external electric fields. We consider two types of edges (armchair and zigzag) and each wit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905912

9. Temperature dependence of the diffusive conductivity of bilayer graphene
Topic: Nanophysics
Published: 8/24/2010
Authors: Shaffique Adam, Mark D Stiles
Abstract: Assuming diffusive carrier transport and employing an effective medium theory, we calculate the temperature dependence of bilayer graphene conductivity due to Fermi-surface broadening as a function of carrier density. We find that the temperature d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904658

10. Real Space Mapping of Magnetically Quantized Graphene States
Topic: Nanophysics
Published: 8/8/2010
Authors: Joseph A Stroscio, D. L. Miller, Kevin Kubista, Gregory M. Rutter, Ming Ruan, Walt A. de Heer, Markus Kindermann, Phillip N. First
Abstract: In a perpendicular magnetic field, the quantized independent-electron states (Landau levels) of graphene are degenerate in the valley degree of freedom and nearly-so in spin. The momentum-space valley degeneracy traces to the equivalence of the A a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904831



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