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You searched on: Topic Area: Nanomaterials

Displaying records 41 to 50 of 71 records.
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41. Determination of Moisture Content of Single-Wall Carbon Nanotubes
Topic: Nanomaterials
Published: 10/17/2011
Authors: Rolf Louis Zeisler, Rabia Oflaz, Ralph E. Sturgeon, Rick L Paul, Brian E Lang, Jeffrey A Fagan, Joseph W Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Abstract: Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results ...

42. High Frequency Characterization of Contact Resistance and Conductivity of Platinum Nanowires*
Topic: Nanomaterials
Published: 10/1/2011
Authors: Kichul Kim, Paul Rice, Thomas M Wallis, Dazhen Gu, SangHyun (Sang-Hyun) Lim, Atif A. Imtiaz, Pavel Kabos, Dejan Filipovic
Abstract: Abstract, Individual platinum (Pt) nanowires (NWs) with 100 nm and 250 nm diameters, embedded in coplanar waveguide (CPW) structures are investigated. Three approaches for characterization of their contact resistance and conductivity at high frequenc ...

43. Graphene: A New Horizon for Modern Technology
Topic: Nanomaterials
Published: 9/15/2011
Author: Jan Obrzut
Abstract: Graphene has the potential to improve a long list of daily electronics that are the foundation of the modern computing revolution. In step with research in renewable energy, graphene can and has been used in efficient, flexible solar cells. Crossing ...

44. Effect of AlN Buffer Layer Properties on the Morphology and Polarity of GaN Nanowires Grown by Molecular Beam Epitaxy
Topic: Nanomaterials
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 ...

45. Exposure and Fire Hazard Assessment of Nanoparticles in Fire Safe Consumer Products: Interagency Agreement Final Report
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7805
Topic: Nanomaterials
Published: 8/4/2011
Authors: Rick D Davis, Yeon Seok Kim, Richard H. Harris Jr., Marc R. Nyden, Nasir M. Uddin, Treye Thomas
Abstract: An innovative technology was evaluated to generate fire and health safe soft furnishings. Nanoparticle-based thin coatings on a polyurethane foam and nonwoven barrier fabric were applied using Layer-by-layer (Lbl) assembly. This is the first report ...

46. O2 A-band line parameters to support atmospheric remote sensing. Part II: The rare isotopologues
Topic: Nanomaterials
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 ...

47. A semicontinuum model for Si(x)Ge(1-x) alloys: calculation of their elastic characteristics and the strain field at the free surface of a semi-infinite alloy
Topic: Nanomaterials
Published: 7/11/2011
Authors: Vinod K Tewary, Mark D Vaudin
Abstract: A semicontiuum Green‰s-function-based model is proposed for analysis of averaged mechanical characteristics of Si(x)Ge(1-x). The atomistic forces in the model are distributed at discrete lattice sites, but the Green‰s function is approximated by the ...

48. Highly selective GaN-nanowire/TiO2-nanocluster hybrid sensors for detection of benzene and related environment pollutants
Topic: Nanomaterials
Published: 6/15/2011
Author: Norman A Sanford
Abstract: Nanowire‹nanocluster hybrid chemical sensors were realized by functionalizing gallium nitride (GaN) nanowires (NWs) with titanium dioxide (TiO2) nanoclusters for selectively sensing benzene and other related aromatic compounds. Hybrid sensor device ...

49. Atomic-Scale Structural Characterization of Double-Supported WO3/TiO2/SiO2 Solid Acid Catalysts
Topic: Nanomaterials
Published: 6/14/2011
Authors: Andrew A Herzing, Wu Zhou, Kevin Doura, Eiji Okunishi, Elizabeth Ross-Medgaarden, Israel Wachs, Christopher Kiely

50. Effect of oxidation on surface-enhanced Raman scattering activity of silver nanoparticles: a quantitative correlation
Topic: Nanomaterials
Published: 6/6/2011
Authors: Yun Han, Robert Lupitskyy, Tseng-Ming Chou, Christopher M Stafford, Henry Du, Svetlana Sukhishvili
Abstract: The effect of silver oxidation on surface-enhanced Raman scattering (SERS) was investigated using citrate-reduced silver nanoparticles (Ag NPs) (45-50 nm in diameter) immobilized on glass substrate. Oxidation of Ag NPs was performed in controlled ozo ...

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