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Displaying records 21 to 30 of 61 records.
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21. High-energy Ultra-Small Angle X-ray Scattering Instrument at the Advanced Photon Source
Topic: Nanomaterials
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

22. Evaluation of Metal Oxide Nanowire Materials with Temperature-Controlled Microsensor Substrates
Topic: Nanomaterials
Published: 11/30/2012
Authors: Kurt D Benkstein, Baranidharan Raman, David L. Lahr, Stephen Semancik
Abstract: Nanomaterials are becoming increasingly important for next-generation chemical sensing devices. In particular, quasi-one-dimensional materials, such as nanowires, are attracting a great deal of interest. While early examples of nano-wire-based chemic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907591

23. Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures
Topic: Nanomaterials
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

24. Giant piezoelectricity in PMN-PT thin films: Beyond PZT
Topic: Nanomaterials
Published: 11/1/2012
Authors: S. H. Baek, M. S. Rzchowski, Vladimir A Aksyuk
Abstract: Micro-electromechanical systems (MEMS) incorporating piezoelectric layers provide active transduction between electrical and mechanical energy, which enables highly sensitive sensors and low-voltage driven actuators surpassing the passive operation o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912113

25. Anomalous Friction in Suspended Graphene
Topic: Nanomaterials
Published: 9/20/2012
Authors: Alexander Y Smolyanitsky, Jason Philip Killgore
Abstract: Since the discovery of the Amonton's law and with support of modern tribological models, friction between surfaces of three-dimensional materials is known to generally increase when the surfaces are in closer contact. Here, using molecular dynamics s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910882

26. Colorimetric Detection with Aptamer-Gold Nanoparticle Conjugates: Effect of Aptamer Length on Response
Topic: Nanomaterials
Published: 9/14/2012
Authors: Jorge L Chavez, Robert I. MacCuspie, Nancy Kelley-Loughnane, Morley O Stone
Abstract: A riboflavin binding aptamer (RBA) was used in combination with gold nanoparticles (AuNPs) to detect riboflavin in vitro. The RBA-AuNPs responded colorimetrically to the presence of riboflavin and this response could be followed by the naked eye. We ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909910

27. Contact resistance of low-temperature carbon nanotube vertical interconnects
Topic: Nanomaterials
Published: 8/20/2012
Authors: Ann Chiaramonti Chiaramonti Debay, Sten Vollebregt, R. Ishihara, Hugo Schellevis, Kees Beenakker
Abstract: In this work the electrical contact resistance and length dependant resistance of vertically aligned carbon nano- tubes (CNT) grown at 500 °C with high tube density (1011) are investigated by measuring samples with different CNT lengths. From scannin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911548

28. Nano-Apatitic Composite Scaffolds for Stem Cell Delivery and Bone Tissue Engineering
Topic: Nanomaterials
Published: 4/15/2012
Authors: Hockin H. K. Xu, Carl George Simon Jr.
Abstract: The need for bone defect repair and regeneration arises from trauma, disease, congenital deformity, and tumor resection. Bone fracture occurs to seven million people each year in the United States, and musculoskeletal conditions cost $215 billion ann ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904167

29. Rippling Instability of Supported Polymer Nanolines
Topic: Nanomaterials
Published: 2/21/2012
Authors: Vijaya R. Tirumala, Christopher M Stafford, Leonidas E. Ocola, Jack F Douglas, L. Mahadevan
Abstract: The swelling response of polymer line gratings supported on a rigid substrate has direct implications on their mechanical stability during pattern transfer in nanofabrication. The polymer lines, when swollen in a good solvent, undergo a rippling inst ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909469

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



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