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Topic Area: Materials Science

Displaying records 421 to 430 of 482 records.
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421. Combinatorial Chemistry
Topic: Materials Science
Published: 10/13/2003
Authors: J D. Hewes, Debra L Kaiser, Alamgir Karim, Eric J. Amis
Abstract: In 1995, the rapid fabrication of tens, hundreds, and, eventually, tens of thousands of samples in two-dimensional arrays of discrete microscaled samples (pixels) using lithography methods developed for the electronics industry was reported. Importan ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902276

422. BridgeLCC 2.0 Users Manual: Life-Cycle Costing Software for the Preliminary Design of Bridges (NIST GCR 03-853)
Series: Grant/Contract Reports (NISTGCR)
Report Number: 03-853
Topic: Materials Science
Published: 9/1/2003
Author: M A Ehlen
Abstract: BridgeLCC 2.0 is user-friendly software developed by the National Institute of Standards and Technology to help bridge designers determine the cost effectiveness of alternative bridge designs, construction and repair strategies, and construction mat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907943

423. Elastic Stiffnesses, Debye Temperatures, and T^dc^ in Cuprates
Topic: Materials Science
Published: 9/1/2003
Authors: H M Ledbetter, K Sudook
Abstract: For cuprate superconductors and related oxides, we review some aspects of their elastic constants. We consider the systematics of the bulk-modulus/atomic-volume (B/V^da^) relationship. For nonsuperconducting oxides, the B-V^da^ diagram shows that m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851245

424. Elastic Constants of Natural Quartz
Topic: Materials Science
Published: 8/1/2003
Authors: Paul R Heyliger, H M Ledbetter, Sudook A Kim
Abstract: We measured the elastic constants of a natural-quartz sphere using resonance-ultrasound spectroscopy (RUS). Our measurements of the near-traction-free vibrational frequencies of the sphere are matched with the predicted frequencies from the dynamic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851248

425. Formation of a Surface Quantum Dot Near Laterally and Vertically Neighboring Dots
Topic: Materials Science
Published: 7/1/2003
Authors: B Yang, Vinod K Tewary
Abstract: Elastic energy release rate (EERR) of a surface quantum dot (QD) near laterally and vertically neighboring seed QDs in a linear anisotropic elastic substrate iscalculated. An efficient boundary element method is used to solve the three-dimensional b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851315

426. Benzene Intermediates and Mechanisms during Catalytic Oxidation on the Pt (111) Surface Using Soft X-ray Fluorescence Methods
Topic: Materials Science
Published: 5/15/2003
Authors: A L Marsh, D J Burnett, Daniel A Fischer, J L Gland
Abstract: The catalytic oxidation of benzene on the Pt(111) surface has been characterized, in pressures of flowing oxygen up to 1.33 Pa, using temperature-programmed fluorescence yield near-edge spectroscopy (TP-FYNES). During temperature-programmed oxidatio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850735

427. Combining Magnets and Dielectrics: Crystal Chemistry in the BaO-Fe^d2^O^d3^-TiO^d2^ System
Topic: Materials Science
Published: 4/1/2003
Authors: T Siegrist, Terrell A Vanderah
Abstract: Phases observed in the Ba-Fe-Ti-O system are classified and described within the framework of close packed [O,Ba/O] layers, with the transition metals in either octahedral (titanium and iron) or tetrahedral (iron only) sites. The resulting crystal c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850669

428. Intermetallics Formation and Growth at the Interface of Tin-Based Solder Alloys and Copper Substrates
Topic: Materials Science
Published: 2/17/2003
Authors: Juan C Madeni, S X Liu, Thomas Allen Siewert
Abstract: Increasing concerns regarding environmental contamination is driving the soldering research community to develop lead-free solder alloys. Previous studies have shown that Sn-based alloys such as Sn-3.5Ag, Sn-0.7Cu, Sn-9Zn, and Sn-3.2Ag-O. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851327

429. Subsolidus Phase Equilibria and Crystal Chemistry in the System BaO-TiO^d2^-Ta^d2^O^d5^
Topic: Materials Science
Published: 1/1/2003
Authors: Terrell A Vanderah, Robert S. Roth, T Siegrist, W Febo, J. M. Loezos, Winnie K Wong-Ng
Abstract: Subsolidus phase relations have been determined for the BaO: TiO^d2^Ta^d2^O^d5^ system. Approximately 100 specimens were prepared in air at temperatures near but below the solidus (1275 C to 1500 C). For the binary BaO: Ta^d2^O^d5^ subsystem, the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850602

430. Phase Equilibria and Crystal Chemistry in the BaO-Al^d2^O^d3^-Nb^d2^O^d5^ and BaO-Nb^d2^O^d5^ Systems
Topic: Materials Science
Published: 11/1/2002
Authors: Terrell A Vanderah, B C Collins, Winnie K Wong-Ng, Robert S. Roth, L Farber
Abstract: Subsolidus phase equilibria in the BaO:Al^d2^O^d3^:Nb^d2^O^d5^ system at ~1250 C in air have been determined. Ternary compound formation in this system is limited to one new phase, Ba^d5.75^Al^d0.75^Nb^d9.25^O^d30^ (Ba^d6-x^Al^d1-x^Nb9+xO30, x=0.25; ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850531



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