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Displaying records 391 to 400 of 424 records.
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391. The evaluation of photo/e-beam complementary grayscale lithography for high topography 3D structure
Topic: Materials Science
Published: 3/29/2013
Authors: Liya Yu, Richard J Kasica, Robert Dennis Newby, Lei Chen, Vincent K Luciani
Abstract: This article demonstrates and evaluates photo/e-beam grayscale complementary lithography processes for the fabrication of large area, high topography grayscale structure. The combination of these two techniques capitalizes on the capability of photol ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913677

392. The molecular basis of mesophase ordering in a thiophene-based copolymer
Topic: Materials Science
Published: 2/18/2009
Authors: Dean M DeLongchamp, Regis J Kline, Youngsuk Jung, Eric K Lin, Daniel A Fischer, David J Gundlach, Andrew Moad, Lee J Richter, Michael F. Toney, Martin Heeney, Iain McCulloch
Abstract: The carrier mobility of poly(2,5-bis(3-alkylthiophen-2-yl) thieno[3,2-b]thiophene) semiconductors can be substantially enhanced after heating through a thermotropic mesophase transition, which causes a significant improvement in thin film structural ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852781

393. Thermoreversible Gels from Mixtures of a High-melting Ionic Liquid and a Polar Polymer for Self-Healing Materials
Topic: Materials Science
Published: 3/27/2011
Authors: Joonsung (Joonsung) Yoon, Christopher M Stafford
Abstract: We investigate a new kind of PVOH physical gel in which the volatile water is replaced with a non-volatile ionic liquid (IL). High melting IL containing Br- anion was chosen so that the hydrogen-bond accepting Br- can enhance miscibility with PVOH wh ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907159

394. Thickness effect on the viscoelastic properties of polystyrene thin films as measured by thermal wrinkling
Topic: Materials Science
Published: 12/29/2010
Authors: Edwin P Chan, Santanu S. Kundu, Qinhuang Lin, Christopher M Stafford
Abstract: The viscoelastic properties of polymer thin films can have a significant impact on the performance in many small-scale devices. In this work, we use thermal wrinkling, which is a phenomenon based on a thermally-initiated instability, to measure visco ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906587

395. Three dimensional optical manipulation and structural imaging of soft materials by use of laser tweezers and multimodal nonlinear microscopy
Topic: Materials Science
Published: 12/15/2010
Authors: Rahul P. Trivedi, Kristine A Bertness, Ivan I. Smalyukh
Abstract: We develop an integrated system of holographic optical trapping and multimodal nonlinear microscopy and perform simultaneous three-dimensional optical manipulation and non-invasive structural imaging of composite soft-matter systems. We combine d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907356

396. Time-resolved photoluminescence of lithographically defined quantum dots fabricated by electron beam lithography and wet chemical etching
Topic: Materials Science
Published: 6/15/2011
Authors: Varun Boehm Verma, Martin J Stevens, Kevin Lawrence Silverman, Neville Dias, Akash Garg, James J. Coleman, Richard P Mirin
Abstract: We measure the time-resolved photoluminescence characteristics of a novel type of lithographically patterned quantum dot fabricated by electron beam lithography, wet chemical etching, and overgrowth of the barrier layers by metalorganic chemical ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907840

397. Tools for Robotics in SME Workcells: Challenges and Approaches for Calibration and Registration
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 8093
Topic: Materials Science
Published: 12/10/2015
Authors: Jeremy A Marvel, Elena R Messina, Brian Antonishek, Karl Van Wyk, Lisa Jean Fronczek
Abstract: An overview of the challenges associated with robot workcell calibration and registration is presented, with a particular focus on the challenges faced by small- and medium-sized manufacturing enterprises. Considerations for the barriers to integrat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918708

398. Tooth chipping can reveal bite forces and diets of fossil hominins
Topic: Materials Science
Published: 6/16/2010
Authors: Paul Constantino, James J. Lee, H Chai, Bernhard Zipfel, Charles Ziscovici, Brian Ronald Lawn, Peter Lucas
Abstract: Fossil hominin tooth enamel often exhibits antemortem edge chipping (Robinson 1954; Tobias 1967; Wallace 1973). Here we apply a simple fracture equation to estimate peak bite forces from the sizes of such chips. This equation, previously validated ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904073

399. Towards a Reference Polyurethane Foam and Bench Scale Test for Assessing Smoldering in Upholstered Furniture
Topic: Materials Science
Published: 12/8/2013
Authors: Mauro Zammarano, Szabolcs Matko, William M Pitts, Douglas Matthew Fox, Rick D Davis
Abstract: Smoldering poses a severe fire hazard due to the potentially lethal amount of toxic carbon monoxide released, and the possibility to reach flashover (through transition from smoldering to flaming) with heat sources otherwise too weak to directly ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914809

400. Towards the Integration of Carbon Nanotubes as Vias in Monolithic 3D Integrated Circuits
Topic: Materials Science
Published: 3/21/2013
Authors: Ann Chiaramonti Chiaramonti Debay, Sten Vollebregt, Johan van der Cingel , Kees Beenakker, R. Ishihara
Abstract: Carbon nanotubes (CNT) can be an attractive candidate for vertical interconnects (vias) in 3D integrated circuits due to their excellent thermal and electrical properties. To investigate CNT electrical resistivity, test vias were fabricated using b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912413



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