Physics – Condensed Matter – Materials Science
Scientific paper
2009-08-11
Phys. Status Solidi B 246, No. 8, 1773-1785 (2009)
Physics
Condensed Matter
Materials Science
12 pages, 10 figures
Scientific paper
10.1002/pssb.200982005
A synopsis of the various photoinduced changes of rheological, mechanical and elastic properties is presented in the first part of the article. After a critical appraisal of a large body of experimental data it suggested that the photoviscous effect, that is, the athermal decrease of viscosity of a non-crystalline chalcogenide upon illumination is the key for a plethora of photoinduced effects reported so far in the literature under different names. Morphic effects (shape or surface morphology) may ap-pear either in the presence or absence of external mechanical stimuli leading to the fabrication of a variety of technologically important photoprocessed structures. A few representative examples of photoplastic effects are described, in the second part of the paper, in some detail based on information provided by in situ Raman scattering and nanoindentation experiments.
Trunov M. L.
Yannopoulos Spyros N.
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