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Displaying records 21 to 25.
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21. Relative Photon-to-Carrier Efficiencies of Alternating Nanolayers of Zinc Phthalocyanine and C60 Multilayer Films Assessed by Time-Resolved Terahertz Spectroscopy
Topic: Nanostructured Materials
Published: 10/1/2009
Authors: Okan Esenturk, Joseph S Melinger, Paul A. Lane, Edwin J Heilweil
Abstract: Alternating multi-layer and 1:1 blended films of zinc phthalocyanine (ZnPc)and buckminsterfullerene (C60) were investigated as model active layers for solar cells by Time-Resolved Terahertz Spectroscopy (TRTS). Relative photon-to-carrier efficiencies ...

22. Large-Area Chemically Modified Graphene Films: Electrophoretic Deposition and Characterization by Soft X-ray Absorption Spectroscopy
Topic: Nanostructured Materials
Published: 8/25/2009
Authors: Daniel A Fischer, V. J. Lee, Luisa Whittaker, Cherno Jaye, K. Baroudi, S Banerjee
Abstract: A facile, rapid, and scalable electrophoretic deposition approach is developed for the fabrication of large-area chemically derived graphene films on conductive substrates based on the electrophoretic deposition of graphene oxide and reduced graphene ...

23. Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene
Topic: Nanostructured Materials
Published: 8/6/2009
Authors: Hongki Min, Allan H. MacDonald
Abstract: We predict that the optical conductivity of normal graphene multilayers is close to {sigma}^duni^=({pi}/2) e^u2^/h per layer over a broad range of frequencies. The origin of this behavior is an emergent chiral symmetry which is present in normal N-l ...

24. Silicon Carbide Nanostructures: A Tight Binding Approach
Topic: Nanostructured Materials
Published: 6/28/2009
Authors: Anthony D. Patrick, Xiao Dong, Thomas C Allison, Estela Blaisten-Barojas
Abstract: A tight-binding model Hamiltonian is newly parametrized for silicon carbide based on fits to a database of energy points calculated within the density functional theory approach of the electronic energy surfaces of nanoclusters and the total en ...

25. Transmission electron microscopy characterization of colloidal copper nanoparticles and their chemical reactivity
Topic: Nanostructured Materials
Published: 2/16/2009
Authors: Guangjun Cheng, Angela R Hight Walker
Abstract: A colloidal synthesis route was developed to produce face-centered cubic (fcc) copper (Cu) nanoparticles in the presence of the surfactants in an organic solvent under an argon environment. Various synthetic conditions have been explored to control t ...

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