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Topic Area: Nanotechnology

Displaying records 261 to 270 of 384 records.
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261. A New Monte Carlo Application for Complex Sample Geometries
Topic: Nanotechnology
Published: 11/1/2005
Author: Nicholas W m Ritchie
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831377

262. Direct Preparation of Particles From Liquid Suspension for ESEM or SEM Analysis
Topic: Nanotechnology
Published: 10/1/2005
Authors: Scott A Wight, Richard D Holbrook
Abstract: A simplified method for the preparation of particles from liquid suspensions has been developed. Particles are deposited directly on carbon planchets for rapid analysis by environmental scanning electron microscopy or by conventional scanning electr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831362

263. Nanoscale elastic-property measurements and mapping using atomic force acoustic microscopy methods
Topic: Nanotechnology
Published: 9/23/2005
Authors: Donna C. Hurley, Malgorzata Kopycinska-Mueller, Tony B. Kos, Roy Howard Geiss
Abstract: We describe a dynamic atomic force microscopy (AFM) method to measure the nanoscale elastic properties of surfaces, thin films, and nanostructures. Our approach is based on atomic force acoustic microscopy (AFAM) techniques and involves the resonant ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50024

264. IMS-Based Trace Explosives Detectors for First Responder Use
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7240
Topic: Nanotechnology
Published: 9/1/2005
Authors: Jennifer R Verkouteren, John G Gillen, R Michael Verkouteren, Robert A Fletcher, E S. Etz, George A Klouda, Alim A Fatah, P Mattson
Abstract: The purpose of this document is to establish minimum performance requirements and an associated test method for Ion Mobility Spectrometry (IMS) based trace explosives detectors for use by the first responder community. Information concerning the the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831386

265. Contact mechanics and tip shape in afm-based nanomechanical measurements
Topic: Nanotechnology
Published: 8/31/2005
Authors: Malgorzata Kopycinska-Mueller, Roy Howard Geiss, Donna C. Hurley
Abstract: Stiffness-load curves obtained in quantitative atomic force acoustic microscopy (AFAM) measurements depend on both the elastic properties of the sample and the geometry of the atomic force microscope (AFM) tip. The geometry of silicon AFM tips change ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50203

266. Quantitative Elastic-Property Measurements at the Nanoscale with Atomic Force Acoustic Microscopy
Topic: Nanotechnology
Published: 8/31/2005
Authors: Donna C. Hurley, Malgorzata Kopycinska-Mueller, Tony B. Kos, Roy Howard Geiss
Abstract: We are developing metrology for rapid, quantitative assessment of elastic porperties with nanoscale spatial resolution. Atomic force acoustic microscopy (AFAM) methods enable modulus measurements at either a single point or as a map of local property ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50097

267. Depth Profiling of Poly(L-Lactic Acid)/Pluronic Polymer BlendsWith Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS)
Topic: Nanotechnology
Published: 6/1/2005
Authors: Christine M. Mahoney, J Yu, J Gardella
Abstract: Polymeric blends comprised of the biodegradable polymer poly-L-lactic acid (PLLA) and polyethylene oxide (PEO) are of considerable interest due to their potential applications as protein drug delivery devices. In such devices, the PEO component will ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831372

268. Miniature Piezoceramic Actuators with Improved Fatigue Resistance
Topic: Nanotechnology
Published: 6/1/2005
Authors: Stephanie A Hooker, Jens Mueller, Clayton Kostelecky, K. Womer
Abstract: Piezoelectric ceramics are desirable actuator materials for many biomedical applications due to their ability to generate precise, controlled motion with applied voltage. Herein, we report the fabrication of miniature piezoelectric ceramic actuators ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30065

269. Acoustical methods to determine thin-film and nanoscale mechanical properties
Topic: Nanotechnology
Published: 5/31/2005
Authors: Donna C. Hurley, Roy Howard Geiss, N Jennett, Malgorzata Kopycinska-Mueller, A Maxwell, Jens Mueller, David Thomas Read, J Wright
Abstract: We describe two acoustical methods to evaluate the mechanical properties of thin films and nanoscale structures: atomic force acoustic microscopy and surface acoustic wave spectroscopy. The elastic properties of an 800-nm-thick nickel film were exami ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50075

270. In Situ Ellipsometric Study of PEG/Cl^u-^ Coadsorption on Cu, Ag, and Au
Topic: Nanotechnology
Published: 5/1/2005
Authors: Marlon L Walker, Lee J Richter, Thomas P Moffat
Abstract: Spectroscopic ellipsometry was used to examine the adsorption of polyethylene glycol (PEG) and Cl- on polycrystalline Cu, Ag and Au electrodes in sulfuric acid. In halide-free sulfuric acid, PEG adsorption on Cu and Ag is minimal at potentials positi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831365



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