What is it about?

The super-bandgap laser irradiation of the in situ prepared As-S chalcogenide films was found to cause drastic structural transformations and unexpected selective diffusion processes, leading to As enrichment on the nanolayer surface.

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Why is it important?

The formation of a concentration gradient is a result of bond cleavage and molecular reorientation during transformations and anisotropic molecular diffusion.


Recent progress in chalcogenide photonics shows that the glasses of As-S system are among the best candidates as an active optical media for ultrafast all-optical processing systems .Such systems include an optical train which must be capable of transporting beam without seriously degrading of optical media during irradiation .

Volodymyr Mitsa
Uzhhorod National University, UKRAINE

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This page is a summary of: Super-bandgap light stimulated reversible transformation and laser-driven mass transport at the surface of As2S3 chalcogenide nanolayers studied in situ, The Journal of Chemical Physics, December 2018, American Institute of Physics,
DOI: 10.1063/1.5053228.
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