Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity

Leandro M. Malard; Thonimar V. Alencar; Ana Paula M. Barboza; Kin Fai Mak; Ana M. De Paula

Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity

Leandro M. Malard, Thonimar V. Alencar, Ana Paula M. Barboza, Kin Fai Mak, Ana M. De Paula

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We report the observation of second harmonic generation (SHG) from odd-layer MoS2 atomic crystal. In contrast, no SHG is observed for samples with even layer numbers due to the restoration of perfect inversion symmetry. Moreover, the SHG intensity is found to directly reflect the underlying 3-fold rotation symmetry of the crystal, which provides a powerful method for optical imaging of the material crystal structure with sub-micron resolution.

Original language	English (US)
Title of host publication	CLEO
Subtitle of host publication	Science and Innovations, CLEO_SI 2013
State	Published - Nov 18 2013
Event	CLEO: Science and Innovations, CLEO_SI 2013 - San Jose, CA, United States Duration: Jun 9 2013 → Jun 14 2013

Other

Other	CLEO: Science and Innovations, CLEO_SI 2013
Country/Territory	United States
City	San Jose, CA
Period	6/9/13 → 6/14/13

All Science Journal Classification (ASJC) codes

Computer Networks and Communications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

Cite this

@inproceedings{d1613148c40e4bccadda07ed8586fb82,

title = "Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity",

abstract = "We report the observation of second harmonic generation (SHG) from odd-layer MoS2 atomic crystal. In contrast, no SHG is observed for samples with even layer numbers due to the restoration of perfect inversion symmetry. Moreover, the SHG intensity is found to directly reflect the underlying 3-fold rotation symmetry of the crystal, which provides a powerful method for optical imaging of the material crystal structure with sub-micron resolution.",

author = "Malard, {Leandro M.} and Alencar, {Thonimar V.} and Barboza, {Ana Paula M.} and Mak, {Kin Fai} and {De Paula}, {Ana M.}",

year = "2013",

month = nov,

day = "18",

language = "English (US)",

isbn = "9781557529725",

booktitle = "CLEO",

note = "CLEO: Science and Innovations, CLEO_SI 2013 ; Conference date: 09-06-2013 Through 14-06-2013",

}

TY - GEN

T1 - Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity

AU - Malard, Leandro M.

AU - Alencar, Thonimar V.

AU - Barboza, Ana Paula M.

AU - Mak, Kin Fai

AU - De Paula, Ana M.

PY - 2013/11/18

Y1 - 2013/11/18

N2 - We report the observation of second harmonic generation (SHG) from odd-layer MoS2 atomic crystal. In contrast, no SHG is observed for samples with even layer numbers due to the restoration of perfect inversion symmetry. Moreover, the SHG intensity is found to directly reflect the underlying 3-fold rotation symmetry of the crystal, which provides a powerful method for optical imaging of the material crystal structure with sub-micron resolution.

AB - We report the observation of second harmonic generation (SHG) from odd-layer MoS2 atomic crystal. In contrast, no SHG is observed for samples with even layer numbers due to the restoration of perfect inversion symmetry. Moreover, the SHG intensity is found to directly reflect the underlying 3-fold rotation symmetry of the crystal, which provides a powerful method for optical imaging of the material crystal structure with sub-micron resolution.

UR - http://www.scopus.com/inward/record.url?scp=84887495293&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887495293&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781557529725

BT - CLEO

T2 - CLEO: Science and Innovations, CLEO_SI 2013

Y2 - 9 June 2013 through 14 June 2013

ER -

Imaging the crystal structure of few-layer two-dimensional crystals by optical nonlinearity

Abstract

Other

All Science Journal Classification (ASJC) codes

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