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You searched on: Topic Area: Nanotechnology

Displaying records 91 to 100 of 197 records.
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91. Rectangular Scale-Similar Etch Pits in Monocrystalline Diamond
Topic: Nanotechnology
Published: 9/15/2011
Authors: Craig D. (Craig) 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 ...

92. Three dimensional aspects of droplet coalescence during dropwise condensation on superhydrophobic surfaces
Topic: Nanotechnology
Published: 8/24/2011
Authors: Konrad Rykaczewski, John Henry j 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 ...

93. 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 ...

94. 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 ...

95. 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 ...

96. 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 ...

97. 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 ...

98. 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 ...

99. 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 A. 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 ...

100. 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 ...

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