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Topic Area: Nanotechnology
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Displaying records 281 to 290 of 390 records.
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281. Quantitative secondary ion mass spectrometry imaging of self-assembled monolayer films for electron beam dose mapping in the environmental scanning electron microscope
Topic: Nanotechnology
Published: 7/1/1998
Authors: John G Gillen, Scott A Wight, David S. Bright, T M. Herne
Abstract: Fluorinated alkanethiol self assembled monolayers (SAM) films immobilized on gold substrates have been used as electron-sensitive resists to map quantitatively the spatial distribution of the primary electron beam scattering in an environmental scann ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831060

282. Quantum Dot Dissemination and Behavior in Bacterial Biofilms
Topic: Nanotechnology
Published: 5/7/2006
Authors: Jayne B Morrow, Richard D Holbrook, Cynthia J Zeissler
Abstract: Quantum dots (QDs) are colloidal semiconductor nanocrystals that photoluminescence emission is proportional to the dot size and have been utilized in fluorescent imaging in biological systems. Biofilms are communities of microorganisms attached to su ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902126

283. RAPID INSPECTION OF CARBON NANOTUBE QUALITY
Topic: Nanotechnology
Published: 7/1/2007
Authors: Stephanie A Hooker, Roy Howard Geiss, Aparna Kar
Abstract: Carbon nanotubes have unique properties of interest for applications in aerospace, electronics, and biotechnology. However, the properties of different batches of carbon nanotubes can vary considerably depending on chemical purity and the nanotube ty ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50489

284. Radioactive Particle Analysis by Digital Autoradiography
Topic: Nanotechnology
Published: 5/1/2001
Authors: Cynthia J Zeissler, Richard Mark Lindstrom, J P McKinley
Abstract: We have been exploring ways to evaluate the activity of radioactive particles that have been detected by phosphor plate digital autoradiography based on photostimulated luminescence (PSL). A PSL system with 25{mu} pixel digitization has been applied ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831184

285. 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

286. 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

287. 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

288. 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

289. 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

290. 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



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