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Topic Area: Nanotechnology

Displaying records 41 to 50 of 340 records.
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41. Reaction Mechanism Governing the Formation of 1,3-bis(diphenylphosphino)propane-protected Gold Nanoclusters
Topic: Nanotechnology
Published: 9/19/2011
Authors: Jeffrey W Hudgens, John M. Pettibone, Thomas P Senftle, Ryan N. Bratton
Abstract: This report outlines the determination of a reaction mechanism that can be manipulated to develop directed syntheses of gold monolayer protected clusters (MPCs) prepared by the reduction of solutions containing 1,3-bis(diphenylphosphino)propane (L^u3 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909874

42. Rectangular Scale-Similar Etch Pits in Monocrystalline Diamond
Topic: Nanotechnology
Published: 9/15/2011
Authors: Craig Dyer McGray, Richard A Allen, Marc J Cangemi, Jon C Geist
Abstract: Etching of monocrystalline diamond in oxygen and water vapor at 1100° C through small pores in a silicon nitride film produced smooth-walled rectangular cavities. The cavities were imaged by electron microscope and measured by interferometric microsc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908075

43. Investigation of Thermally Responsive Block Copolymer Thin Film Morphology using Gradient Libraries
Topic: Nanotechnology
Published: 8/28/2011
Authors: Jennifer Y. Kelly, Christopher M Stafford, Michael J Fasolka, Thomas H Epps, John A. (John A) Howarter, Shuhui Kang, Julie N. L. Albert
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908168

44. Selective Oxidation of Glycerol by Highly Active Bimetallic Catalysts at Ambient Temperature under Base Free Conditions
Topic: Nanotechnology
Published: 8/24/2011
Authors: Andrew A Herzing, Gemma L. Brett, Peter Miedziak, Nikolaos Dimitratos, Meenakshisundaram Sankar, Marco Conte, Jose Antonio Lopez-Sanchez, David W Knight, Stuart H Taylor, Graham J Hutchings, Qian He, Christopher J Kiely
Abstract: AuPt or AuPd nanoparticles when supported on Mg(OH)2 are highly active for the selective oxidation of glycerol under base-free conditions at ambient temperatures. When bimetallic particles with the appropriate composition are prepared, catalysts wit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907936

45. Three dimensional aspects of droplet coalescence during dropwise condensation on superhydrophobic surfaces
Topic: Nanotechnology
Published: 8/24/2011
Authors: Konrad Rykaczewski, John Henry Scott, Sukumar Rajauria, W Robert Ashurst, Jeff Chinn, Amy Chinn, Wanda Jones
Abstract: We report formation of nano-to-microscale satellite droplets in the geometrical shadow of high contact angle primary drops during dropwise water condensation on a nanostructured superhydrophobic surface. The primary drops contribute to the heat tran ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908846

46. 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

47. Trapping and Release of Citrate-Capped Gold Nanoparticles
Topic: Nanotechnology
Published: 8/1/2011
Authors: Darwin R Reyes-Hernandez, Geraldine I. Mijares, Brian Joseph Nablo, Kimberly A Briggman, Michael Gaitan
Abstract: An electrical method to trap and release charged gold nanoparticles on and from the surface of alkanethiol self-assembled-monolayer (SAM) modified gold electrodes is presented. Gold nanoparticle (GNP) coated electrodes were formed by immersing amine ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904039

48. 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

49. 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

50. 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