Results 221 to 230 of about 164,066 (268)

Hamaker constants of inorganic materials

Advances in Colloid and Interface Science, 1997
Calculations of Hamaker constants using Lifshitz theory require the availability of accurate dielectric data, especially in the ultraviolet spectral region, and the use of a convenient and appropriate mathematical representation. In this review, a multiple oscillator model — the so-called Ninham-Parsegian (N-P) representation — has been used and ...
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Elastic Constant Measurement on Cholesteric Materials

Molecular Crystals and Liquid Crystals, 1982
Abstract A method of calculating elastic constants from C-V measurements on nematics has been extended to cholesteric liquid crystal materials using racemic mixtures. Calculations of elastic constants v. temperature obtained by this method are presented and discussed.
I. Fedak, R. D. Pringle, G. H. Curtis
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Elastic Constants of Composite Materials

The Journal of the Acoustical Society of America, 1969
The elastic constants of a great variety of composites are calculated by evaluating the dispersion relation of sound waves for long wavelengths.
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Curie Constants in Concentrated Magnetic Materials

Journal of Applied Physics, 1965
A theoretical expression is derived for the first-order contribution to the Curie constant arising from cross terms between the off-diagonal parts of the magnetic moments and the interactions between the magnetic moments. In certain simple cases the contribution ΔC1 is equal to 2αθ, where α is the temperature-independent part of the susceptibility and ...
W. P. Wolf, J. F. Heintz
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THE ATTENUATION CONSTANT OF EARTH MATERIALS

GEOPHYSICS, 1941
This paper discusses briefly the nature of viscous losses and solid friction losses, both of which may cause sound waves to be attenuated as they travel through a physical medium. A simple experimental technique for determining the nature and magnitude of the loss factor in small rock samples is described, and data are given which indicate that solid ...
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Low Dielectric Constant Materials

Chemical Reviews, 2009
Willi, Volksen, Robert D, Miller, Geraud, Dubois   +2 more
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Microstructures of High Dielectric Constant Materials

1987
A brief overview is given of the important microstructural characteristics of several classes of high dielectric constant ceramics. Attention is focussed on the understanding of ferroelectric domain structures in BaTiO3, the effect of grain size on the dielectric constant in BaTiO3, and the microstructure and microchemistry of so-called “relaxor ...
Helen M. Chan, Martin P. Harmer
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Molecular imaging in oncology: Current impact and future directions

Ca-A Cancer Journal for Clinicians, 2022
Steven P Rowe, Martin G Pomper
exaly  

Advantages, challenges and molecular design of different material types used in organic solar cells

Nature Reviews Materials, 2023
, Guangye Zhang, Han Yu
exaly  

Material constants

2021
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