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Displaying 976 - 1000 of 1729

Combinatorial and High-Throughput Measurement of the Modulus of Thin Polymer Films

June 1, 2005
Author(s)
Christopher M. Stafford, Shu Guo, Martin Y. Chiang, C Harrison
Considerable attention has been devoted to developing fabrication strategies for constructing combinatorial material libraries as well as tools for characterizing the chemical and physical properties of such libraries. Less attention has been dedicated to

First-Order Raman Spectra of AB' 1/2 B'' 1/2 O 3 Double Perovskites

June 1, 2005
Author(s)
S A. Prosandeev, U Waghmare, Igor Levin, James E. Maslar
First principles computations of Raman intensities were performed for perovskite-like compound CaAl1/2Nb1/2O3 (CAN). This compound features 1:1 (NaCl-type) ordering of Al and Nb superimposed onto the b-b-c+ octahedral tilting. Raman tensor for CAN was

Machining Cracks in Finished Ceramics

May 16, 2005
Author(s)
George D. Quinn, L K. Ives, S Jahanmir
Well prepared strength test specimens and components break from a material s inherent flaws and machining damage has no effect on strength. On the other hand, grinding can create machining flaws that control strength and limit the performance of finished

Magnetic Normal Modes of Nanoelements

May 1, 2005
Author(s)
Robert D. McMichael, Mark D. Stiles
Micromagnetic calculations are used to determine the eigenfrequencies and precession patterns of some of the lowest-frequency magnetic normal modes of submicron patterned elements. For a Permalloy-like ellipse, 350 nm 160 nm 5 nm thick in zero field, the

Thermodynamic Control of Germanium Quantum Dot Growth on Silicon

May 1, 2005
Author(s)
Richard J. Wagner, E Gulari
Strained epitaxial growth of Ge on Si(001) produces self-assembled, nanometer scale islands, or quantum dots. We study this growth by atomistic simulation, computing the energy of island structures to determine when and how islanding occurs. The

Surface Engineering Measurement Standards for Inorganic Materials

April 14, 2005
Author(s)
S J. Dapkunas
The Recommended Practice Guide describes nearly 200 standard measurement methods (standards) used by the surface engineering community. The standards compiled address inorganic (metal and ceramic) materials used in structural applications. The Guide is

Genetic Cellular Responses to Tyrosine-Derived Polycarbonate Blends

April 1, 2005
Author(s)
L A. Bailey, Matthew Becker, James A. Cooper, J Kohn, Eric J. Amis
The evaluation and identification of detrimental interactions between biological species and synthetic surfaces is a daunting challenge as the number of materials and control of physical variables increases. In this talk, the physical properties of

Manipulating Cell Adhesion on Gradient Poly(2-Hydroxyethyl Methacrylate)-Grafted Surfaces

April 1, 2005
Author(s)
Ying Mei, Tao Wu, Chang Xu, K J. Langenbach, John T. Elliott, B D. Vogt, Kathryn L. Beers, Eric J. Amis, N Washburn
In this study, a simple and versatile method was developed to prepare the low grafting density initaitor gradient, which was combined with surface initiated atom transfer radical polymerizations (ATRP) to produce a well defined poly(2-hydroxyethyl

Microfluidic Platform for the Generation of Organic-Phase Microreactors

April 1, 2005
Author(s)
Zuzanna T. Cygan, J Cabral, Kathryn L. Beers, Eric J. Amis
Rapid prototyping photolithography of a thiolene based resin was used to fabricate microfluidic devices stable to aliphatic and aromatic organic solvents. The swelling of the thiolene resin in various organic solvents was quantified and the solvent

Boundary Lubricating Film: Formation and Lubrication Mechanism

March 4, 2005
Author(s)
Stephen M. Hsu, Richard S. Gates
Boundary lubricating films are critical in effective lubrication of engine components. Their formation mechanism has not been fully understood because of the large variations of chemistry and machinery in operation. Various reports on boundary lubricating

Boundary Lubrication and Boundary Lubricating Film

March 3, 2005
Author(s)
Stephen M. Hsu, Richard S. Gates
This chapter offers a comprehensive summary of current understanding in boundary lubrication and the formation of boundary lubricating films. Classical and modern definitions of boundary lubrication are presented which serve to define the scope of boundary

Photoreflectance Study of the Electronic Structure of Si-Doped InyGa 1-y As 1-x N x Films With x 0.012

March 1, 2005
Author(s)
Youn S. Kang, Lawrence H. Robins, Anthony Birdwell, Alexander J. Shapiro, W. R. Thurber, Mark D. Vaudin, M M. Fahmi, D Bryson, S N. Mohammad
The electronic structure of Si-doped InyGa1-yAs1-xNx films on GaAs substrates, grown by nitrogen-plasma-assisted MBE, was examined by photoreflectance (PR) spectroscopy at temperatures between20 K and 300 K. The measured critical-point energies were

Combinatorial Peel Tests for the Characterization of Adhesion Behavior of Polymeric Films

February 1, 2005
Author(s)
R Song, Martin Chiang, A J. Crosby, Alamgir Karim, Eric J. Amis, Naomi Eidelman
The self-adhesion behavior of an optically smooth poly(methyl methacrylate) (PMMA) thin film (ca.. 100 nm) on different evaporated metal substrates has been investigated using a combinatorial method approach. In this investigation through high-throughput
Displaying 976 - 1000 of 1729
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