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Displaying records 31 to 40 of 61 records.
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31. Effect of elastic deformation on frictional properties of few-layer graphene
Topic: Nanomaterials
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

32. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908873

33. 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 Lim, Atif (Atif) 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907628

34. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909416

35. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908715

36. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908275

37. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907932

38. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909995

39. 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
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905584

40. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906745



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