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Bioscience

Biomaterials

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Displaying 526 - 550 of 3439

Material Properties of a Sintered a-SiC

February 19, 2017
Author(s)
R G. Munro
A self-consistent, single-valued representation of the major physical, mechanical, and thermal properties of a sintered Α-SiC is presented. This comprehensive set of properties is achieved by focusing on a narrowly defined material specification in which

Materials Design for Biomechanical Layer Structures

February 19, 2017
Author(s)
Brian R. Lawn, Antonia Pajares, P Miranda, Y N. Deng
A survey of recent advances in the analysis of ceramic-based layer structures for biomechanial applications is presented. Data on model layer systems, facilitating development of explicit fracture mechanics relations for predicting critical loads to

Measurement Methods for Materials Properties: Elasticity

February 19, 2017
Author(s)
Sheldon M. Wiederhorn, Richard J. Fields
Elastic constants must be obtained by experiment methods. Materials are too complicated and theory of solids insufficiently sophisticated to obtain accurate theoretic determinations of elastic constants. Usually, simple static mechanical tests are used to

Mechanical Properties of Aluminum Nitride Substrates

February 19, 2017
Author(s)
Jay S. Wallace, Lin-Sien H. Lum
Aluminum nitride (AlN),because of its high thermal conductivity, is seeing increased use for heat management applications of semiconductor devices. With the likelihood of large mechanical stresses, both during fabrication as well as in service, mechanical

Mechanical Reliability and Life Prediction for Brittle Materials

February 19, 2017
Author(s)
Grady S. White, Lin-Sien H. Lum, Stephen W. Freiman
This chapter is intended to provide the reader with a general understanding of why brittle materials fail in a time-dependent manner in service and how to estimate the lifetimes that can be expected for such materials. In addition, we describe procedures

Model for Adhesion-Based Energy Dissipation During Friction

February 19, 2017
Author(s)
Michael Nosonovsky, Stephen M. Hsu
Adhesion plays a significant role in Nanoscale interfacial friction for basically non-adhesive surfaces (no chemical bonding). The adhesion forces are composed of van der Waals forces and the contact force from surface contact. The van der Waals forces are

Morphology, Structure, and Nucleation of Out-of-Phase Boundaries (OPBs) in Epitaxial Films of Layered Complex Oxides

February 19, 2017
Author(s)
M A. Zurbuchen, W Tian, X Q. Pan, D Fong, S K. Streiffer, M E. Hawley, J Lettieri, Y Jia, Shengqian Ma, S J. Fulk, D J. Comstock, S Knapp, A H. Carim, D G. Schlom
Out-of-phase boundaries (OPBs) are translation boundary defects characterized by a misregistry of a fraction of a unit cell dimension in neighboring regions of a crystal. Although rarely observed in the bulk, they are common in epitaxial films of layered

Multiscale Roughness and Stability of Superhydrophobic Biomimetic Interfaces

February 19, 2017
Author(s)
Michael Nosonovsky
Stability of a composite interface (CI) of roughness-induced superhydrophobic surfaces is studied. In order to have high contact angle and low contact angle hysteresis, superhydrophobic surfaces should be able to form a CI with air pockets in the valleys

Nanofriction: The Observation of Elastic Plowing

February 19, 2017
Author(s)
Z C. Ying, Stephen M. Hsu
Accurate friction measurement at nanoscale is critical in reliable device design. Literature papers have reported different friction values for the same materials pair when different instruments and tip sizes were used. We have conducted a series of
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