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You searched on: Topic Area: Nanostructured Materials Sorted by: title

Displaying records 1 to 10 of 22 records.
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1. Contact Resistance of Flexible, Transparent Carbon Nanotube Films with Metals
Topic: Nanostructured Materials
Published: 10/7/2010
Authors: Hua Xu, Lei Chen, Liangbing Hu, Nikolai B Zhitenev
Abstract: We studied the contact properties of different metals to flexible optically-transparent single-walled carbon nanotube (SWCNTs) films. The SWCNT films are deposited on flexible polyethylene terephthalate (PET) substrate and patterned in test structure ...

2. Effect of AlN Buffer Layer Properties on the Morphology and Polarity of GaN Nanowires Grown by Molecular Beam Epitaxy
Topic: Nanostructured Materials
Published: 9/8/2011
Authors: Matthew David Brubaker, Kristine A Bertness, Norman A Sanford, Albert Davydov, Igor Levin, Devin M. Rourke, Victor M. Bright
Abstract: Low temperature AlN buffer layers grown by plasma-assisted Molecular Beam Epitaxy (MBE) on Si (111) were found to significantly affect the subsequent growth morphology of GaN nanowires. The AlN buffer layers exhibited nanowire-like columnar protrusi ...

3. Hydrodynamic Fractionation of Finite Size Nano Gold Clusters
Topic: Nanostructured Materials
Published: 6/15/2011
Authors: De-Hao D. Tsai, Tae Joon Cho, Frank W DelRio, Julian S. Taurozzi, Michael Russel Zachariah, Vincent A Hackley
Abstract: We demonstrate a high resolution in situ experimental method for performing simultaneous size-classification and characterization of functional nanoscale gold clusters (NGCs) based on asymmetric-flow field flow fractionation (AFFF). Field emission sc ...

4. 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 ...

5. Microwave Conductance of Semicontinuous Metallic Films from Coplanar Waveguide Scattering Parameters
Topic: Nanostructured Materials
Published: 5/6/2013
Authors: Jan Obrzut, Oleg A Kirillov
Abstract: Conductance of thin semicontinuous metallic films is measured in coplanar waveguide configuration at frequencies of 100 MHz to 20 GHz. The presented model of the microwave network correlates the experimental scattering parameters (S11) and (S21) with ...

6. Non-contact Conductance Measurement of Nanosize Objects using Reasonant Cavity
Topic: Nanostructured Materials
Published: 5/15/2014
Authors: Jan Obrzut, Nathan D Orloff, Oleg A Kirillov
Abstract: A cavity perturbation method is used to determine conductance of small volume nano-carbon materials. These are the building blocks of nanostructured materials and devices, and therefore their electrical characteristics are important in the materials ...

7. O2 A-band line parameters to support atmospheric remote sensing. Part II: The rare isotopologues
Topic: Nanostructured Materials
Published: 7/21/2011
Authors: Joseph Terence Hodges, David A Long, Daniel K Havey, S. S. Yu, M Okumura, Charles E Miller
Abstract: Frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) was employed to measure over 100 transitions in the R-branch of the b1Σg+←X3Σg-(0,0) band for the rare O2 isotopologues. The use of 17O- and 18O-enriched mixtures allowed fo ...

8. 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 ...

9. 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 ...

10. Resonant Microwave Absorption in Thermally Deposited Au Nanoparticle Films Near Percolation Coverage
Topic: Nanostructured Materials
Published: 6/19/2013
Authors: Jan Obrzut, Jack F Douglas, Oleg A Kirillov, Fred Sharifi, James Alexander Liddle
Abstract: We observe a resonant transition in microwave absorption in thin thermally deposited Au nanoparticle films near the geometrical percolation transition pc where the films exhibit a ,fractal‰ heterogeneous geometry. The absorption of incident microwa ...

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