Effect of high-temperature shock-wave compression on few-layer MoS 2, WS2 and MoSe2

K. Vasu; H. S.S.R. Matte; Sharmila N. Shirodkar; V. Jayaram; K. P.J. Reddy; Umesh V. Waghmare; C. N.R. Rao

doi:10.1016/j.cplett.2013.07.044

Effect of high-temperature shock-wave compression on few-layer MoS ₂, WS₂ and MoSe₂

K. Vasu
, H. S.S.R. Matte
, Sharmila N. Shirodkar
, V. Jayaram
, K. P.J. Reddy
, Umesh V. Waghmare
, C. N.R. Rao

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

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 (0 0 2) planes, the decrease being greatest in MoSe₂. Raman spectra show softening of both the A1_g and the E2g1 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 MoS ₂ sheets which is responsible for the changes in the vibrational spectra.

Original language	English
Pages (from-to)	105-109
Number of pages	5
Journal	Chemical Physics Letters
Volume	582
DOIs	https://doi.org/10.1016/j.cplett.2013.07.044
State	Published - 8 Aug 2013
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2013.07.044

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@article{fc9447d7c79745feb474d7a1d174ed97,

title = "Effect of high-temperature shock-wave compression on few-layer MoS 2, WS2 and MoSe2",

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 (0 0 2) planes, the decrease being greatest in MoSe2. Raman spectra show softening of both the A1g and the E2g1 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 MoS 2 sheets which is responsible for the changes in the vibrational spectra.",

author = "K. Vasu and Matte, \{H. S.S.R.\} and Shirodkar, \{Sharmila N.\} and V. Jayaram and Reddy, \{K. P.J.\} and Waghmare, \{Umesh V.\} and Rao, \{C. N.R.\}",

note = "Funding Information: KV thanks the DST-Postdoctoral fellowship in nanoscience and nanotechnology program for financial support.",

year = "2013",

month = aug,

day = "8",

doi = "10.1016/j.cplett.2013.07.044",

language = "English",

volume = "582",

pages = "105--109",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Effect of high-temperature shock-wave compression on few-layer MoS 2, WS2 and MoSe2

AU - Vasu, K.

AU - Matte, H. S.S.R.

AU - Shirodkar, Sharmila N.

AU - Jayaram, V.

AU - Reddy, K. P.J.

AU - Waghmare, Umesh V.

AU - Rao, C. N.R.

N1 - Funding Information: KV thanks the DST-Postdoctoral fellowship in nanoscience and nanotechnology program for financial support.

PY - 2013/8/8

Y1 - 2013/8/8

N2 - 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 (0 0 2) planes, the decrease being greatest in MoSe2. Raman spectra show softening of both the A1g and the E2g1 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 MoS 2 sheets which is responsible for the changes in the vibrational spectra.

AB - 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 (0 0 2) planes, the decrease being greatest in MoSe2. Raman spectra show softening of both the A1g and the E2g1 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 MoS 2 sheets which is responsible for the changes in the vibrational spectra.

UR - https://www.scopus.com/pages/publications/84883256582

U2 - 10.1016/j.cplett.2013.07.044

DO - 10.1016/j.cplett.2013.07.044

M3 - Article

AN - SCOPUS:84883256582

SN - 0009-2614

VL - 582

SP - 105

EP - 109

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Effect of high-temperature shock-wave compression on few-layer MoS ₂, WS₂ and MoSe₂

Abstract

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