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Determining the Out-of-Plane Longitudinal Sound Speed in GeS by Broadband Time-Domain Brillouin Scattering

  • Watheq Al-Basheer*
  • , Christian Viernes
  • , Meixin Cheng
  • , Ruofei Zheng
  • , Sam Netzke
  • , Kostyantyn Pichugin
  • , German Sciaini*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Over the past decade, two-dimensional (2D) layered semiconducting materials, with their distinctive structures and unique physicochemical properties, have attracted attention for potential applications in photonics and optoelectronics. In this study, we utilized time-domain broadband Brillouin scattering on a single germanium monosulfide (GeS) crystal to determine the out-of-plane longitudinal sound speed, evaluated at vL = (4035 ± 200) m/s. The reported results demonstrate the effectiveness of this nondestructive, all-optical technique for measuring the elastic properties in fragile 2D layered materials and provide the value of the out-of-plane compressive elastic constant, C = (69 ± 7) GPa.

Original languageEnglish
Pages (from-to)15463-15467
Number of pages5
JournalACS Omega
Volume9
Issue number13
DOIs
StatePublished - 2 Apr 2024

Bibliographical note

Publisher Copyright:
© 2024 The Authors. Published by American Chemical Society.

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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