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Topic Area: Nanomaterials

Displaying records 51 to 60 of 153 records.
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51. Quantitative Determination of Competitive Molecular Adsorption on Gold Nanoparticles Using Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy
Topic: Nanomaterials
Published: 6/28/2011
Authors: De-Hao D. Tsai, Melissa Davila-Morris, Frank W DelRio, Suvajyoti S. Guha, Vincent A Hackley, Michael R Zachariah
Abstract: Surface-sensitive quantitative studies of competitive molecular adsorption on nanoparticles were conducted using a modified Attenuated attenuated Total total Reflectionreflectance-Fourier Transform transform Infrared infrared (ATR-FTIR) spectroscopy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907586

52. 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

53. 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

54. Magnetic nanostructures for advanced technologies: fabrication, metrology, and challenges
Topic: Nanomaterials
Published: 6/7/2011
Authors: June W. Lau, Justin M Shaw
Abstract: Magnetic nanostructures are an integral part to many state-of-the-art and emerging technologies. However, the complete path from parts (the nanostructures) to the manufacturing of the end products, is not always obvious to students of magnetism. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908067

55. 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

56. Interlaboratory Reproducibility of Size and Surface Charge Measurements on Nanoparticles prior to Biological Impact Assessment
Topic: Nanomaterials
Published: 6/3/2011
Authors: Gert Roebben, Sonia Ramirez-Garcia, Vincent A Hackley, Matthias Roesslein, Fred Klaessig, Vikram Kestens, Iseult Lynch, C. Michael Garner, Alan Rawle, Allison Elder, Vicky Colvin, Wolfgang Kreyling, Harald Krug, Zuzanna Lewicka, Scott McNeil, Andre Nel, Anil K. Patri, Peter Wick, Tian Xia, Guenther Oberdoerster, Kenneth Dawson
Abstract: The International Alliance for NanoEHS Harmonization (IANH) organises interlaboratory comparisons of methods relevant for a better understanding of the biological impacts of nano-objects, to highlight and remove sources of irreproducibility in existi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905647

57. Stable Single-Crystalline Body Centered Cubic Fe Nanoparticles
Topic: Nanomaterials
Published: 4/20/2011
Authors: Natalie F. Huls, Lise-Marie Lacroix, Don Ho, Xiaolian Sun, Shouheng Sun
Abstract: Air stable magnetic nanoparticles (MNPs) with high magnetization are required in order to fully realize optimized biomedical agents. However, only metallic NPs with good crystallinity such as Fe or FeCo, exhibit magnetization as high as 220 A.m.kg. T ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906858

58. Effects of Ligand Monolayers on Catalytic Nickel Nanoparticles for Synthesizing Vertically Aligned Carbon Nanofibers
Topic: Nanomaterials
Published: 3/16/2011
Authors: Kate L Klein, Mehmet Sarac, Robert Wilson, Aaron C. Johnston-Peck, Junwei Wang, Ryan Pearce, Anatoli V. Melechko, Joseph B. Tracy
Abstract: Vertically aligned carbon nanofibers (VACNFs) were synthesized using ligand-stabilized Ni nanoparticle (NP) catalysts and plasma-enhanced chemical vapor deposition. Using chemically-synthesized Ni NPs enables facile preparation of VACNF arrays with m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908045

59. Directed 2D-to-3D pattern transfer method for controlled fabrication of topologically complex three- dimensional nanostructures in silicon
Topic: Nanomaterials
Published: 2/1/2011
Authors: Konrad Rykaczewski, Owen J. Hildreth, Ching P. Wong, Andrei G. Fedorov, John Henry j Scott
Abstract: A process allowing for control over the 3D motion of catalyst nanostructures during Metal-assisted Chemical Etching by their local pinning prior to etching is developed. Topologically complex 3D structures that are partially located within the et ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906590

60. Electron Beam Induced Growth of TiO2 Nanostructures
Topic: Nanomaterials
Published: 2/1/2011
Author: Renu Sharma
Abstract: We report the evolution of TiO2 nanostructures when Au nanoparticles, supported on single crystal TiO2 substrates, were heated in ~2 Torr of flowing O2 in an environmental transmission electron microscope. Nanostructures with different morphologies w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905919



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