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You searched on: Topic Area: Characterization, Nanometrology, and Nanoscale Measurements

Displaying records 91 to 100 of 125 records.
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91. Electron beam heating effects during ESEM imaging of water condensation on superhydrophobic surfaces
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 3/1/2011
Authors: Konrad Rykaczewski, John Henry j Scott, Andrei G. Fedorov
Abstract: Nanostructured superhydrophobic surfaces show promise as promoters of dropwise condensation and may lead to significant efficiency improvements in numerous industrial processes. Droplets with diameters below ~10 µm account for the majority of the he ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907573

92. Injection-level-dependent internal quantum efficiency and lasing in low-defect GaN nanowires
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 2/28/2011
Authors: John B. Schlager, Norman A Sanford, Kristine A Bertness, Alexana Roshko
Abstract: Measurements of temperature-dependent and time-resolved photoluminescence (PL) on individual GaN nanowires revealed PL lifetimes and values of internal quantum efficiency (IQE) that increased with excitation fluence. With sufficient injection levels, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906136

93. Dispersion Stability of Nanoparticles in Ecotoxicological Investigations: A Comparison of Different Techniques
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 2/26/2011
Authors: Ratna Tantra, Shingheng Jing, Siva Kaliyappan, Nicholas Walker, James Noble, Vincent A Hackley
Abstract: One of the main challenges in nanoecotoxicological investigations is in the selection of the most suitable measurement methods and protocols for nanoparticle characterisation. Several parameters have been identified as being important as they govern ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906180

94. PREPARATION OF A NANOSCALE TiO2 AQUEOUS DISPERSION FOR TOXICOLOGICAL OR ENVIRONMENTAL TESTING
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 1/24/2011
Authors: Julian S. Taurozzi, Vincent A Hackley
Abstract: This work prescribes the preparation of a P25 nanoparticle dispersion in high purity deionized water, as a first step towards the preparation of nanoscale P25 dispersions in relevant biological and environmental matrices. This protocol should be used ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907260

95. Ultrasonic Dispersion of Nanoparticles for Environmental, Health and Safety Assessment--Issues and Recommendations
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 11/30/2010
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark R. Wiesner
Abstract: A common approach for the study of the environmental and biological interactions of nanomaterials relies on the ultrasonic disruption of powders to obtain nanoparticle suspensions. Yet, the widespread and inconsistent use of ultrasonic treatment acro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905978

96. 3D Nanoscale Characterization of Thin-Film Organic Photovoltaic Device Structures via Spectroscopic Contrast in the TEM
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 10/21/2010
Authors: Andrew A Herzing, Lee J Richter, Ian M. Anderson
Abstract: The three-dimensional characterization of third generation photovoltaic device structures at the nanometer scale is essential to the development of efficient, reliable, and inexpensive solar cell technologies. Electron tomography is a powerful metho ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905254

97. Characterization of a Soluble Anthradithiophene Derivative
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 10/1/2010
Authors: Brad Conrad, Calvin Chan, Marsha A. Loth, Sean R Parkin, Xinran Zhang, John E Anthony, David J Gundlach
Abstract: The structural and electrical properties of a new solution processable material, 2,8-diflouro-5,11-tert-butyldimethylsilylethynl anthradithiophene (TBDMS), were measured for single crystal and spun cast thin-film transistors. TBDMS is observed to rea ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905704

98. High-Frequency Nanofluidics: A Universal Formulation of the Fluid Dynamics of MEMS and NEMS
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 9/23/2010
Authors: Kamil L. Ekinci, V. Yakhot, Sukumar Rajauria, C. Colosqui, D. M. Karabacak
Abstract: A solid body undergoing oscillatory motion in a fluid generates an oscillating flow. Oscillating flows in Newtonian fluids were first treated by G.G. Stokes in 1851. Since then, this problem has attracted much attention, mostly due to its technologic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904957

99. Fractionation and Characterization of Gold Nanoparticles in Aqueous Solution: Asymmetric-Flow Field Flow Fractionation with MALS, DLS and UV-Vis Detection
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 8/30/2010
Authors: Tae Joon Cho, Vincent A Hackley
Abstract: Asymmetrical-flow field flow fractionation (AFFF) separates constituents based on hydrodynamic size, and is emerging as a powerful tool for obtaining high-resolution information on the size, molecular weight, composition, and stability of nanoscale p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905979

100. Separation and Metrology of Nanoparticles by Nanofluidic Size Exclusion
Topic: Characterization, Nanometrology, and Nanoscale Measurements
Published: 8/11/2010
Authors: Samuel M Stavis, Jon C Geist, Michael Gaitan
Abstract: A nanofluidic approach to the separation and metrology of nanoparticles is demonstrated. Advantages of this approach include nanometer-scale resolution, nanometer-scale to submicrometer-scale range, mitigation of hydrodynamic and diffusional limitat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904215



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