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PHOTO-INDUCED PLASTICITY IN AMORPHOUS CHALCOGENIDES: AN OVERVIEW OF MECHANISMS AND APPLICATIONS

M. L. Trunov1,*

Affiliation

  1. Uzhgorod National University, 13, Kapitulna str., Uzhgorod 88000, Ukraine

Abstract

The athermal increase in the plasticity of glasses has been achieved under the combined action of external stress and illumination. A review has been given on this subject including the change in the plasticity behavior with the sample composition of AsxSe1-x thin films. We suggest that the presence of stress-free phase (close to the mean-field rigidity percolation transition) is the main condition for the giant photo-softening effect observed in thin films of chalcogenide glasses. It is confirmed that the most pronounced negative photo-plastic effect (giant photo-softening) is observed in As20Se80 films while change in photo-induced optical constants is the lowest. The results will be discussed within the frame of recent structural models of chalcogenide glasses. Possible applications of the effect of nanoscale photo induced plasticity of chalcogenide glasses for improvement of the technology of chalcogenide film production and in devices for nanoimprint lithography and opto mechanical data storage have been considered..

Keywords

Chalcogenide glass, Amorphous As-Se films, Photoplasticity, Nanoindentation, Stress relaxation, Adhesion, Scanning probe-based storage.

Submitted at: Aug. 22, 2005
Accepted at: Sept. 22, 2005

Citation

M. L. Trunov, PHOTO-INDUCED PLASTICITY IN AMORPHOUS CHALCOGENIDES: AN OVERVIEW OF MECHANISMS AND APPLICATIONS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 5, pp. 2235-2246 (2005)