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Effect of high-temperature shock-wave compression on few-layer MoS2, WS2 and MoSe2

Vasu, K and Matte, HSSR and Shirodkar, Sharmila N and Jayaram, V and Reddy, KPJ and Waghmare, Umesh V and Rao, CNR (2013) Effect of high-temperature shock-wave compression on few-layer MoS2, WS2 and MoSe2. In: CHEMICAL PHYSICS LETTERS, 582 . pp. 105-109.

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Official URL: http://dx.doi.org/10.1016/j.cplett.2013.07.044

Abstract

Exposure of few-layer MoS2, WS2 and MoSe2 to high-temperature shock waves causes morphological changes and a significant decrease in the interlayer separation between the (002) planes, the decrease being greatest in MoSe2. Raman spectra show softening of both the A(1g) and the E-2g(1) modes initially, followed by a slightly stiffening. Using first-principles density functional theoretical analysis of the response of few-layer MoS2 to shock waves, we propose that a combination of shear and uniaxial compressive deformation leads to flattening of MoS2 sheets which is responsible for the changes in the vibrational spectra. (C) 2013 Elsevier B.V. All rights reserved.

Item Type: Journal Article
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Additional Information: Copyright for this article belongs to Science Direct
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 17 Oct 2013 11:37
Last Modified: 17 Oct 2013 11:37
URI: http://eprints.iisc.ernet.in/id/eprint/47517

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