Elastic Properties of Few Nanometers Thick Polycrystalline MoS<inf>2</inf> Membranes: A Nondestructive Study

B. Graczykowski; M. Sledzinska; M. Placidi; D. Saleta Reig; M. Kasprzak; F. Alzina; C. M. Sotomayor Torres

doi:https://doi.org/10.1021/acs.nanolett.7b03669

Elastic Properties of Few Nanometers Thick Polycrystalline MoS<inf>2</inf> Membranes: A Nondestructive Study

B. Graczykowski, M. Sledzinska, M. Placidi, D. Saleta Reig, M. Kasprzak, F. Alzina, C. M. Sotomayor Torres

Department of Mathematics

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

16 Citations (Scopus)

Abstract

© 2017 American Chemical Society. The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. To date, the most standard technique to study the mechanical properties of suspended 2D materials is based on nanoindentation experiments. In this work, by means of micro-Brillouin light scattering we determine the mechanical properties, that is, Young modulus and residual stress, of polycrystalline few nanometers thick MoS2 membranes in a simple, contact-less, nondestructive manner. The results show huge elastic softening compared to bulk MoS2, which is correlated with the sample morphology and the residual stress.

Original language	English
Pages (from-to)	7647-7651
Journal	Nano Letters
Volume	17
Issue number	12
DOIs	https://doi.org/10.1021/acs.nanolett.7b03669
Publication status	Published - 13 Dec 2017

Keywords

Molybdenum disulfide
elastic properties
micro-Brillouin light scattering
ultrathin membranes

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https://doi.org/10.1021/acs.nanolett.7b03669

https://ddd.uab.cat/record/225330

Cite this

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title = "Elastic Properties of Few Nanometers Thick Polycrystalline MoS2 Membranes: A Nondestructive Study",

abstract = "{\textcopyright} 2017 American Chemical Society. The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. To date, the most standard technique to study the mechanical properties of suspended 2D materials is based on nanoindentation experiments. In this work, by means of micro-Brillouin light scattering we determine the mechanical properties, that is, Young modulus and residual stress, of polycrystalline few nanometers thick MoS2 membranes in a simple, contact-less, nondestructive manner. The results show huge elastic softening compared to bulk MoS2, which is correlated with the sample morphology and the residual stress.",

keywords = "Molybdenum disulfide, elastic properties, micro-Brillouin light scattering, ultrathin membranes",

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doi = "https://doi.org/10.1021/acs.nanolett.7b03669",

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T1 - Elastic Properties of Few Nanometers Thick Polycrystalline MoS2 Membranes: A Nondestructive Study

AU - Graczykowski, B.

AU - Sledzinska, M.

AU - Placidi, M.

AU - Saleta Reig, D.

AU - Kasprzak, M.

AU - Alzina, F.

AU - Sotomayor Torres, C. M.

PY - 2017/12/13

Y1 - 2017/12/13

N2 - © 2017 American Chemical Society. The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. To date, the most standard technique to study the mechanical properties of suspended 2D materials is based on nanoindentation experiments. In this work, by means of micro-Brillouin light scattering we determine the mechanical properties, that is, Young modulus and residual stress, of polycrystalline few nanometers thick MoS2 membranes in a simple, contact-less, nondestructive manner. The results show huge elastic softening compared to bulk MoS2, which is correlated with the sample morphology and the residual stress.

AB - © 2017 American Chemical Society. The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. To date, the most standard technique to study the mechanical properties of suspended 2D materials is based on nanoindentation experiments. In this work, by means of micro-Brillouin light scattering we determine the mechanical properties, that is, Young modulus and residual stress, of polycrystalline few nanometers thick MoS2 membranes in a simple, contact-less, nondestructive manner. The results show huge elastic softening compared to bulk MoS2, which is correlated with the sample morphology and the residual stress.

KW - Molybdenum disulfide

KW - elastic properties

KW - micro-Brillouin light scattering

KW - ultrathin membranes

U2 - https://doi.org/10.1021/acs.nanolett.7b03669

DO - https://doi.org/10.1021/acs.nanolett.7b03669

M3 - Article

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JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 12

ER -

Elastic Properties of Few Nanometers Thick Polycrystalline MoS<inf>2</inf> Membranes: A Nondestructive Study

Abstract

Keywords

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