English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Based on density-functional perturbation theory we have computed from firstprinciples the photoelastic tensor of few crystalline phases of silica atnormal conditions and high pressure (quartz, $\alpha$-cristobalite,$\beta$-cristobalite) and of models of amorphous silica (containig up to 162atoms), obtained by quenching from the melt in combined classical andCar-Parrinello molecular dynamics simulations. The computational framework hasalso been checked on the photoelastic tensor of crystalline silicon and MgO asprototypes of covalent and ionic systems. The agreement with availableexperimental data is good.  A phenomenological model suitable to describe the photoelastic properties ofdifferent silica polymorphs is devised by fitting on the ab-initio data.Comment: ten figure

Photoelasticity of crystalline and amorphous silica from first principles