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You searched on: Topic Area: Nanotechnology

Displaying records 91 to 100 of 195 records.
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91. GaN Nanowires Grown by Molecular Beam Epitaxy
Topic: Nanotechnology
Published: 8/1/2011
Authors: Kristine A Bertness, Norman A Sanford, Albert Davydov
Abstract: The unique properties of GaN nanowires grown by molecular beam epitaxy are reviewed. These properties include the absence of residual strain, exclusion of most extended defects, long photoluminescence lifetime, low surface recombination velocity,and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909502

92. Lithography and Chemical Modeling of Acid Amplfiers for Use in EUV Photoresists
Topic: Nanotechnology
Published: 7/28/2011
Authors: Kirstin Kruger, craig higgins, Gregg M. Gallatin, Robert Brainard
Abstract: We postulate that the best way to simultaneously improve resolution, line edge roughness (LER), and sensitivity all in EUV resists is to increase the number of acid molecules generated per absorbed photon. In previous work, we showed that acid ampli ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908397

93. A circular dielectric grating for vertical extraction of single quantum dot emission
Topic: Nanotechnology
Published: 7/25/2011
Authors: Marcelo Ishihara Davanco, Matthew T. Rakher, Dieter Schuh, Antonio Badolato, Kartik A Srinivasan
Abstract: We demonstrate a suspended circular grating composed of partially etched annular trenches in a thin GaAs membrane, designed for e±cient and moderately broadband ( approx. 5 nm) extraction of emission from single InAs quantum dots. Simulations indic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908236

94. Far infrared and Terahertz thermal detectors for radiometry using a carbon nanotube array
Topic: Nanotechnology
Published: 7/18/2011
Authors: John H Lehman, Erich N Grossman
Abstract: We present a description of a 1.5 mm long, vertically aligned carbon nanotube array (VANTA) on a thermopile, and separately on a pyroelectric detector. Three VANTA samples, having average lengths of 40 µm, 150 µm and 1.5 mm were evaluated with respe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908490

95. Small fluctuations in epitaxial growth via conservative noise
Topic: Nanotechnology
Published: 7/7/2011
Authors: Paul N. Patrone, Rongrong Wang, Dionisios Margetis
Abstract: We study the combined effect of growth (material deposition from above) and nearest-neighbor entropic and force-dipole interactions in a stochastically perturbed system of N line defects (steps) on a vicinal crystal surface in 1+1 dimensions. Firs ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908523

96. Fate of nanoparticles during life cycle of polymer nanocomposites
Topic: Nanotechnology
Published: 7/6/2011
Authors: Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Xiaohong Gu, Justin M Gorham, Paul E Stutzman, Deborah L Stanley, Walter Eric Byrd, John W Hettenhouser, Joannie W Chin
Abstract: Nanoparticles are increasingly used in consumer and structural polymeric products to enhance a variety of properties. Under the influences of environmental factors (e.g., ultraviolet, moisture, temperature) and mechanical actions (e.g., scratching, v ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907488

97. Electrical Characterization of Photoconductive GaN Nanowire Devices from 50 MHz to 33 GHz
Topic: Nanotechnology
Published: 7/1/2011
Authors: Thomas M Wallis, Dazhen Gu, Atif (Atif) Imtiaz, Pavel Kabos, Paul Timothy Blanchard, Norman A Sanford, Kristine A Bertness, Christpher Smith
Abstract: The electrical response of two-port., photoconductive GaN nanowire devices was measured from 50 MHz to 33 GHz. The admittance of individual contacted nanowires showed an increase on the order of 10% throughout the measured frequency range after expo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903093

98. Evaluating the characteristics of multiwall carbon nanotubes
Topic: Nanotechnology
Published: 7/1/2011
Authors: John H Lehman, M. Terrones, Elisabeth Mansfield, Katie Hurst, Vincent Muenier
Abstract: During the past 20 years, multiwall carbon nanotubes (MWCNTs) have become an important industrial material. Hundreds of tons are produced each year. This review is a survey of the scientific literature, motivated by industrial requirements and guidel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907346

99. Guided three-dimensional catalyst folding during Metal assisted Chemical Etching of Silicon
Topic: Nanotechnology
Published: 6/28/2011
Authors: Konrad Rykaczewski, Owen J. Hildreth, Ching P. Wong, Andrei G. Fedorov, John Henry j Scott
Abstract: In order to fabricate truly complex three-dimensional (3D) silicon nanostructures fabrication methods which expand beyond the concept of creation of straight 3D structures by direct extension of two dimensional (2D) patterns need to be developed. In ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908006

100. Hydrodynamic Fractionation of Finite Size Nano Gold Clusters
Topic: Nanotechnology
Published: 6/15/2011
Authors: De-Hao D. Tsai, Tae Joon Cho, Frank W DelRio, Julian S. Taurozzi, Michael Russel Zachariah, Vincent A Hackley
Abstract: We demonstrate a high resolution in situ experimental method for performing simultaneous size-classification and characterization of functional nanoscale gold clusters (NGCs) based on asymmetric-flow field flow fractionation (AFFF). Field emission sc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908232



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