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Displaying records 91 to 100 of 397 records.
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91. Measurement of Scattering and Absorption Cross Sections of Microspheres for Wavelengths between 240 nm and 800 nm
Series: Journal of Research (NIST JRES)
Report Number: 118.001
Topic: Materials Science
Published: 1/10/2013
Authors: Lili Wang, Steven J Choquette, Adolfas Kastytis Gaigalas
Abstract: A commercial spectrometer with a 150 mm integrating sphere (IS) detector was used to measure the scattering and absorption cross sections of polystyrene monodisperse microspheres suspended in water. Absorption measurements were performed with the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909635

92. Band Offset Determination of Atomic-Layer-Deposited Al2O3 and HfO2 on InP by Internal Photoemission and Spectroscopic Ellipsometry
Topic: Materials Science
Published: 1/9/2013
Authors: Kun Xu, Oleg A Kirillov, David J Gundlach, Nhan V Nguyen, Pei D Ye, Min Xu, Lin Dong, Hong Sio
Abstract: Band offsets at the interfaces of n- and p-type InP ((100) and (111)A) and atomic-layer-deposited (ALD) Al2O3 were measured with internal photoemission and spectroscopic ellipsometry. Similarly, the band offsets at the interface of semi-insulatin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911342

93. Structure and Dynamics Studies of Concentrated Micrometer-Sized Colloidal Suspensions
Topic: Materials Science
Published: 1/7/2013
Authors: Fan Zhang, Andrew John Allen, Lyle E Levine, Jan Ilavsky, Gabrielle Gibbs Long
Abstract: We present an experimental study of the structural and dynamical properties of concentrated suspensions of a series of different sized polystyrene microspheres dispersed in glycerol for volume fraction concentrations between 10 % and 20 %. The static ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912414

94. Nanoscale Specific Heat Capacity Measurements Using Optoelectronic Bilayer Microcantilevers
Topic: Materials Science
Published: 12/12/2012
Authors: Brian G. (Brian Gregory) Burke, William A Osborn, Richard Swift Gates, David A LaVan
Abstract: We describe a new technique for optically and electrically detecting and heating bilayer microcantilevers (Pt−SiNx) to high temperatures at fast heating rates for nanoscale specific heat capacity measurements. The bilayer microcantilever acts s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912233

95. Capturing nanoscale in network gels by microemulsion polymerization
Topic: Materials Science
Published: 12/3/2012
Authors: Kirt A. Page, John Texter, Dustin England
Abstract: Difficulties in capturing nanoscale structure by polymerizing microemulsions have persisted with the use of thermal initiation. Bicontinuous microemulsion polymerization with reactive surfactant monomer and cross-linker was done with only a 20% i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912333

96. High-energy Ultra-Small Angle X-ray Scattering Instrument at the Advanced Photon Source
Topic: Materials Science
Published: 12/1/2012
Authors: Andrew John Allen, Lyle E Levine, Fan Zhang, Gabrielle Gibbs Long, Jan Ilavsky, Pete R. Jemian
Abstract: This paper reports recent tests performed on the Bonse-Hart-type ultra-small angle X-ray scattering (USAXS) instrument at the Advanced Photon Source with higher-order reflection optics , Si (440) instead of Si (220) , and with X-ray energies greate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911966

97. Formation of Extended Ionomeric Network by Bulk Polymerization of L,D-lactide with Layered Double Hydroxide
Topic: Materials Science
Published: 11/22/2012
Authors: Edward D. McCarthy, Mauro Zammarano, Douglas M. Fox, Ryan C Nieuwendaal, Yeon Seok Kim, P H Maupin, Paul C Trulove, Jeffrey W Gilman
Abstract: We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLA-HYB) during in-situ melt polymerization of L,D lactide in the presence of magnesium/aluminium layered-double-hydroxide (LDH) without added catalyst. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910615

98. Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures
Topic: Materials Science
Published: 11/16/2012
Authors: Christopher L Soles, Hyun Wook Ro, K. J. Alvine, Oleg Shpyrko, Yenling Dai, Alec Sandy, Suresh Narayanan
Abstract: The surface dynamics of thin molten polystyrene films supported by nanoscale periodic silicon line-space gratings were investigated with X-ray photon correlation spectroscopy. Surface dynamics over these nanostructures exhibit high directional aniso ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910869

99. Effect of offset values of solid freeform fabricated PCL/ß-TCP scaffolds on mechanical properties and cellular activities in bone tissue regeneration
Topic: Materials Science
Published: 11/1/2012
Authors: Carl George Simon Jr., GeunHyung Kim, MyungGu Yo
Abstract: Microstructures of biomedical scaffolds can greatly affect cellular activities in tissue regeneration. In particular, scaffolds used in bone tissue regeneration should have several microstructural characteristics, including high porosity, appropriate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910879

100. Infrared hemispherical reflectance of carbon nanotube mats and arrays in the 5 µm to 50 µm wavelength region
Topic: Materials Science
Published: 11/1/2012
Authors: Chris Chunnilall, Aric Warner Sanders, John H Lehman, Evangelos Theocharous
Abstract: We present the absolute infrared (5 {u}m to 50 {u}m) hemispherical reflectance of films produced from commercially available carbon nanotubes. Data were obtained using the upgraded NPL directional- hemispherical reflectance measurement facility. A b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910058



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