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Topic Area: Nanomaterials
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Displaying records 21 to 30 of 127 records.
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21. Comparative Measures of Single Wall Carbon Nanotube Dispersion
Topic: Nanomaterials
Published: 9/14/2006
Authors: Jeffrey A Fagan, Brian Landi, Idan Mandelbaum, Vardhan Bajpai, Barry J. Bauer, Kalman D Migler, Jeffrey Ray Simpson, Angela R Hight Walker, Ryan Raffaelle, Erik K. Hobbie
Abstract: Model polymer composites of DNA wrapped single-wall carbon nanotubes (SWNTs) dispersed in polyacrylic acid are used for a systematic comparison of the different metrologies currently used to evaluate SWNT dispersion. Application of a pH-controlled v ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852660

22. Compressive stress effect on the radial elastic modulus of oxidized Si nanowires
Topic: Nanomaterials
Published: 3/23/2010
Authors: Gheorghe Stan, Sergiy Krylyuk, Albert Davydov, Robert Francis Cook
Abstract: Detailed understanding and optimal control of the properties of Si nanowires are essential steps in developing Si nanoscale circuitry. In this work, we have investigated mechanical properties of as-grown and oxidized Si nanowires as a function of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904727

23. Controlling the size and the activity of Fe particles for synthesis of carbon nanotubes
Topic: Nanomaterials
Published: 11/1/2012
Authors: See-Wee Chee, Renu Sharma
Abstract: The properties of carbon nanotubes (CNTs) are controlled by their structure and morphology. Therefore, their selective synthesis, using catalytic chemical vapor deposition, requires precise control on a number of parameters including the size and act ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909566

24. Core-shell composite of SiCN and multiwalled carbon nanotubes from Toluene dispersion
Topic: Nanomaterials
Published: 5/21/2010
Authors: John H Lehman, Katherine E. Hurst, Gurpreet Singh, Elisabeth Mansfield, John D. Perkins, Christopher L Cromer
Abstract: Carbon nanotubes are known to have high thermal conductivity, and in bulk form, a topology that could constitute the matrix of an inhomogeneous solid. Among the promised applications of carbon nanotubes is a composite material that is practical for t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905291

25. Crystallization of Polyethylene Oxide Patterend by Nanoimprint Lithography
Topic: Nanomaterials
Published: 3/28/2007
Authors: Brian C. Okerberg, Christopher L Soles, Jack F Douglas, Hyun Wook Ro, Alamgir Karim
Abstract: The crystallization behavior of poly(ethylene oxide) (PEO) films patterned by nanoimprint lithography is studied. The imprinted PEO film consists of parallel lines, approximately 240 nm wide and 320 nm tall, on a 400 nm pitch with a residual laye ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852701

26. Depressed Phase Transition in Solution-Grown VO2 Nanostructures
Topic: Nanomaterials
Published: 7/1/2009
Authors: Daniel A Fischer, Luisa Whittaker, Cherno Jaye, Zugen Fu, Sarbajit Banerjee
Abstract: The first-order metal insulator phase transition in VO2 is characterized by an ultrafast several orders of magnitude change in electrical conductivity and optical transmittance, which makes this material an attractive candidate for the fabrication of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902385

27. Determination of Moisture Content of Single-Wall Carbon Nanotubes
Topic: Nanomaterials
Published: 10/17/2011
Authors: Rolf Louis Zeisler, Rabia Oflaz Oflaz, Ralph E. Sturgeon, Rick L Paul, Brian E Lang, Jeffrey A Fagan, Joseph W Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Abstract: Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908873

28. Development of Multilayer Analyzer Array Detectors for X-ray Fluorescence at the Third Generation Synchrotron Source
Topic: Nanomaterials
Published: 8/5/2004
Authors: Z M Zhang, G Rosenbaum, Q Liu, Daniel A Fischer
Abstract: It is a natural to use multilayer analyzers as energy resolving x-ray fluorescence detection in the lower energy region to use multilayer analyzers. The analyzer array detectors can afford large detection solid angle, superb energy resolution, and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851001

29. Differentiation and characterization of isotopically modified silver nanoparticles in aqueous media using asymmetric-flow field flow fractionation coupled to optical detection and mass spectrometry
Topic: Nanomaterials
Published: 12/10/2012
Authors: Julien Claude Maurice Gigault, Vincent A Hackley
Abstract: The principal objective of this work was to develop and demonstrate a new methodology for silver nanoparticle (AgNP) detection and characterization based on asymmetric-flow field flow fractionation (A4F) coupled to multiple detectors and using stable ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912174

30. Direct Observation of Hydrogen Spillover in Ni-Loaded Pr-Doped Ceria
Topic: Nanomaterials
Published: 1/17/2012
Authors: Vaneet Sharma, Peter A. Crozier, Renu Sharma, James B. Adams
Abstract: Hydrogen-spillover in Ni-loaded Pr-doped ceria (PDC) was directly observed using an environmental transmission electron microscope (ETEM). Localized reduction of ceria in a H2 atmosphere was observed and attributed to gas-Ni-ceria interactions at the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908886