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Topic Area: Materials Science

Displaying records 361 to 370 of 427 records.
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361. Elastic Constants of Layers in Isotropic Laminates
Topic: Materials Science
Published: 11/1/2003
Authors: F Hayliger, H M Ledbetter, Sudook A Kim, I Reimanis
Abstract: We determined the individual laminae elastic constants in multilayer laminates composed of dissimilar isotropic layers using acoustic resonance spectroscopy and the linear theory of elasticity. Resonant ultrasound allows one to measure the free-vibr ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=851293

362. First-Principles Calculations of the Dielectric Properties of Perovskite-Type Materials
Topic: Materials Science
Published: 11/1/2003
Author: Eric J Cockayne
Abstract: We compare first-principles (FP) calculations of the ionic effective charges, phonon frequencies, and static dielectric permittivities k^ds^ of several perovskite-type materials. Transition metal ions have anomalously large effective charges, though ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=850677

363. The 2002 Materials Research Society (MRS) Fall Meeting report
Topic: Materials Science
Published: 10/17/2003
Author: Winnie K Wong-Ng
Abstract: Following tradition, the 2002 Materials Research Society (MRS) annual meeting again took place from in Boston Copely Plaza from December 1 to 6 (in the spacious Hynes Convention Center). Attending the Boston MRS Fall meeting, for many attendees, ha ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=850703

364. 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://nist.gov/manuscript-publication-search.cfm?pub_id=902276

365. 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://nist.gov/manuscript-publication-search.cfm?pub_id=907943

366. 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://nist.gov/manuscript-publication-search.cfm?pub_id=851245

367. 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://nist.gov/manuscript-publication-search.cfm?pub_id=851248

368. 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://nist.gov/manuscript-publication-search.cfm?pub_id=851315

369. 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://nist.gov/manuscript-publication-search.cfm?pub_id=850735

370. 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://nist.gov/manuscript-publication-search.cfm?pub_id=850669