The Vibrational Density of States of Amorphous Semiconductors

1981 ◽  
pp. 13-26
Author(s):  
D. L. Weaire
Keyword(s):  
Density Of States ◽  
Amorphous Semiconductors ◽  
Vibrational Density Of States ◽  
Vibrational Density

scholarly journals A Brief Study to Clarify Some Aspects Related to Vibrational Density of States for the Far Infrared Range in Amorphous Semiconductors

1998 ◽  
Vol 20 (3) ◽  
pp. 143-145 ◽  
Author(s):  
M. A. Grado-Caffaro ◽  
M. Grado-Caffaro
Keyword(s):  
Optical Absorption ◽  
Density Of States ◽  
Far Infrared ◽  
Structural Disorder ◽  
Amorphous Semiconductors ◽  
Infrared Range ◽  
Phonon Density ◽  
Phonon Density Of States ◽  
Vibrational Density Of States ◽  
Vibrational Density

Phonon density of states of amorphous semiconductors for the far-infrared range is examined analytically. On the basis of this formulation, optical absorption corresponding to structural disorder is evaluated and discussed at the far-infrared range for a-Ge and a-Si.

scholarly journals Excess vibrational density of states and the brittle to ductile transition in crystalline and amorphous solids

Soft Matter ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1210-1218 ◽  
Author(s):  
Jeetu S. Babu ◽  
Chandana Mondal ◽  
Surajit Sengupta ◽  
Smarajit Karmakar
Keyword(s):  
Mechanical Loading ◽  
Density Of States ◽  
Amorphous Solids ◽  
Vibrational Density Of States ◽  
Brittle To Ductile Transition ◽  
Active Research ◽  
Vibrational Density

The conditions which determine whether a material behaves in a brittle or ductile fashion on mechanical loading are still elusive and comprise a topic of active research among materials physicists and engineers.

Low-energy vibrational density of states of plasticized poly(methyl methacrylate)

2002 ◽  
Vol 82 (5) ◽  
pp. 533-539 ◽  
Author(s):  
L. Saviot ◽  
E. Duval ◽  
J. F. Jal ◽  
A. J. Dianoux ◽  
V. A. Bershtein ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Density Of States ◽  
Low Energy ◽  
Vibrational Density Of States ◽  
Poly Methyl Methacrylate ◽  
Vibrational Density

scholarly journals Enhancement of Interfacial Thermal Conductance of SiC by Overlapped Carbon Nanotubes and Intertube Atoms

2017 ◽  
Vol 139 (5) ◽  
Author(s):  
Chengcheng Deng ◽  
Xiaoxiang Yu ◽  
Xiaoming Huang ◽  
Nuo Yang
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Silicon Carbide ◽  
Density Of States ◽  
Probability Distributions ◽  
Thermal Conductance ◽  
Nonequilibrium Molecular Dynamics ◽  
Vibrational Density Of States ◽  
Interfacial Thermal Conductance ◽  
Vibrational Density

A new way was proposed to enhance the interfacial thermal conductance (ITC) of silicon carbide (SiC) composite through the overlapped carbon nanotubes (CNTs) and intertube atoms. By nonequilibrium molecular dynamics (NEMD) simulations, the dependence of ITC on both the number of intertube atoms and the temperature was studied. It is indicated that the ITC can be significantly enhanced by adding intertube atoms and finally becomes saturated with the increase of the number of intertube atoms. And the mechanism is discussed by analyzing the probability distributions of atomic forces and vibrational density of states (VDOS). This work may provide some guidance on enhancing the ITC of CNT-based composites.

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