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Topic Area: Nanotechnology
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Displaying records 281 to 290 of 384 records.
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281. Reaction Mechanism Governing the Formation of 1,3-bis(diphenylphosphino)propane-protected Gold Nanoclusters
Topic: Nanotechnology
Published: 9/19/2011
Authors: Jeffrey W Hudgens, John M Pettibone, Thomas P Senftle, Ryan N. Bratton
Abstract: This report outlines the determination of a reaction mechanism that can be manipulated to develop directed syntheses of gold monolayer protected clusters (MPCs) prepared by the reduction of solutions containing 1,3-bis(diphenylphosphino)propane (L^u3 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909874

282. Reaction Network Governing Diphosphine-Protected Gold Nanocluster Formation from Nascent Cationic Platforms
Topic: Nanotechnology
Published: 2/16/2012
Authors: John M Pettibone, Jeffrey W Hudgens
Abstract: We identify the reaction network governing gold monolayer protected cluster (MPC) formation during the reduction of Au(PPh^d3^)Cl and L^u5^ (L^u5^ = 1,5-bis(diphenylphosphino)pentane) in solutions. UV-vis spectroscopy and electrospray ionization mass ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909879

283. Real-Time Size Discrimination and Elemental Analysis of Gold Nanoparticles using ES-DMA coupled to ICP-MS
Topic: Nanotechnology
Published: 1/22/2013
Authors: Sherrie R. Elzey, De-Hao D. Tsai, Lee Lijian Yu, Michael R Winchester, Michael E Kelley, Vincent A Hackley
Abstract: We report the development of a hyphenated instrument with the capacity to quantitatively characterize aqueous suspended gold nanoparticles (AuNPs) based on a combination of gas-phase size separation, particle counting, and elemental analysis. A custo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912171

284. Recent Progress in Understanding the Imaging and Metrology using the Helium Ion Microscope
Topic: Nanotechnology
Published: 9/1/2009
Authors: Michael T Postek, Andras Vladar, Bin Ming
Abstract: Nanotechnology is pushing imaging and measurement instrument technology to high levels of required performance. As this continues, new barriers confronting innovation in this field are encountered. Particle beam instrument resolution remains one of t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902762

285. Rectangular Scale-Similar Etch Pits in Monocrystalline Diamond
Topic: Nanotechnology
Published: 9/15/2011
Authors: Craig Dyer McGray, Richard A Allen, Marc J Cangemi, Jon C Geist
Abstract: Etching of monocrystalline diamond in oxygen and water vapor at 1100° C through small pores in a silicon nitride film produced smooth-walled rectangular cavities. The cavities were imaged by electron microscope and measured by interferometric microsc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908075

286. Relative humidity effects on the determination of elastic properties with atomic force acoustic microscopy
Topic: Nanotechnology
Published: 3/1/2004
Authors: Donna C. Hurley, J Turner
Abstract: We have investigated how ambient humidity can affect quantitative measurements of elastic properties on the nanoscale. Using an emerging technique called atomic force acoustic microscopy (AFAM), two samples were examined: a thin film of fluorosilica ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851341

287. Reporting Guidelines for the Preparation of Aqueous Nanoparticle Dispersions from Dry Materials
Series: Special Publication (NIST SP)
Report Number: 1200-1
Topic: Nanotechnology
Published: 6/19/2012
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark R Wiesner
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910681

288. Revealing the Interphase in Polymer Nanocomposites
Topic: Nanotechnology
Published: 3/16/2011
Authors: Mauro Zammarano, Paul Hutsell Maupin, Li Piin Sung, Jeffrey W Gilman, Douglas Matthew Fox
Abstract: Morphological characterization of polymer nanocomposites is a fundamental challenge that is complicated by multiple length scales. Here, we report a technique for high-throughput monitoring of interphase and dispersion in polymer nanocomposites based ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906284

289. Role of Nanoparticles in Life Cycle of Nanocomposites
Topic: Nanotechnology
Published: 6/15/2010
Authors: Xiaohong Gu, Guodong Chen, Minhua Zhao, Stephanie S Watson, Paul E Stutzman, Tinh Nguyen, Joannie W Chin, Jonathan W. Martin
Abstract: The objective of this study is to investigate the role of ZnO nanoparticles in the life cycle of a waterborne polyurethane (PU) nanocomposite during UV exposure. The effects of loadings and sizes of ZnO nanoparticles on photodegradation of ZnO/PU fil ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905542

290. SI Traceability: Current status and future trends for forces below 10 micronewtons
Topic: Nanotechnology
Published: 9/24/2009
Author: Jon Robert Pratt
Abstract: Measurements related to nano- and micro- scale science, technology, and manufacturing are pushing the limits of detectable mechanical, electrical, and chemical quantities to ever smaller values, raising important questions regarding how best to exten ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901419



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