Micropillar Testing of Amorphous Silica
نویسندگان
چکیده
منابع مشابه
Thermal conductivity accumulation in amorphous silica and amorphous silicon
We predict the properties of the propagating and nonpropagating vibrational modes in amorphous silica (a-SiO2) and amorphous silicon (a-Si) and, from them, thermal conductivity accumulation functions. The calculations are performed using molecular dynamics simulations, lattice dynamics calculations, and theoretical models. For a-SiO2, the propagating modes contribute negligibly to thermal condu...
متن کاملThe Phagocytosis and Toxicity of Amorphous Silica
BACKGROUND Inhalation of crystalline silica is known to cause an inflammatory reaction and chronic exposure leads to lung fibrosis and can progress into the disease, silicosis. Cultured macrophages bind crystalline silica particles, phagocytose them, and rapidly undergo apoptotic and necrotic death. The mechanism by which particles are bound and internalized and the reason particles are toxic i...
متن کاملHigh Frequency Dynamics of Amorphous Silica
We present the results of extensive molecular dynamics computer simulations in which the high frequency dynamics of silica, ν > 0.5 THz, is investigated in the viscous liquid state as well as in the glass state. We characterize the properties of high frequency sound modes by analyzing Jl(q, ν) and Jt(q, ν), the longitudinal and transverse current correlation function, respectively. For wave–vec...
متن کاملStructure and Dynamics of amorphous Silica Surfaces
We use molecular dynamics computer simulations to study the equilibrium properties of the surface of amorphous silica. Two types of geometries are investigated: i) clusters with different diameters (13.5Å, 19Å, and 26.5Å) and ii) a thin film with thickness 29Å. We find that the shape of the clusters is independent of temperature and that it becomes more spherical with increasing size. The surfa...
متن کاملAmorphous Silica: A Molecular Dynamics Computer Simulation
We use molecular dynamics computer simulations to calculate the frequency dependence of the specific heat of a SiO2 melt. The ions interact with the BKS potential and the simulations are done in the NVE ensemble. We find that the frequency dependence of the specific heat shows qualitatively the same behavior as the one of structural quantities, in that at high frequencies a microscopic peak is ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Applied Glass Science
سال: 2012
ISSN: 2041-1286
DOI: 10.1111/j.2041-1294.2011.00075.x