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利用宽带时域布里渊散射测定 GaS 中的面外纵向声速

Out-of-Plane Longitudinal Sound Speed Determination in GaS by Broadband Time-Domain Brillouin Scattering.

作者信息

Al-Basheer Watheq, Viernes Christian, Zheng Ruofei, Netzke Sam, Pichugin Kostyantyn, Sciaini German

机构信息

Department of Physics, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.

Interdisciplinary Research Center of Membranes and Water Security, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.

出版信息

ACS Omega. 2024 Nov 21;9(48):47475-47479. doi: 10.1021/acsomega.4c05738. eCollection 2024 Dec 3.

DOI:10.1021/acsomega.4c05738
PMID:39651107
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11618444/
Abstract

Two-dimensional semiconducting gallium sulfide (GaS) has garnered notable interest for its distinct structural and optical properties, which position it as a promising candidate material for various applications ranging from photodetection and photovoltaics to nonlinear frequency conversion. In this work, we determined the out-of-plane longitudinal sound velocity, , via impulsive time-domain femtosecond broadband Brillouin scattering measurements performed on a single flake-like GaS crystal. We obtained a value (3140 ± 20) m/s, which yields an out-of-plane compressive elastic constant, = (38.1 ± 0.5) GPa.

摘要

二维半导体硫化镓（GaS）因其独特的结构和光学性质而备受关注，这使其成为从光电探测、光伏到非线性频率转换等各种应用中有前景的候选材料。在这项工作中，我们通过对单个片状GaS晶体进行脉冲时域飞秒宽带布里渊散射测量，确定了面外纵向声速。我们得到的值为（3140±20）m/s，由此得出面外压缩弹性常数 =（38.1±0.5）GPa。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/8d8ce0f70ad4/ao4c05738_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/c896736001f3/ao4c05738_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/fb1d7d7e1874/ao4c05738_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/8d8ce0f70ad4/ao4c05738_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/c896736001f3/ao4c05738_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/fb1d7d7e1874/ao4c05738_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e97d/11618444/8d8ce0f70ad4/ao4c05738_0003.jpg

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本文引用的文献

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ACS Appl Nano Mater. 2023 Oct 26;6(21):20161-20172. doi: 10.1021/acsanm.3c03899. eCollection 2023 Nov 10.
2
Spectral resolution enhancement for impulsive stimulated Brillouin spectroscopy by expanding pump beam geometry.通过扩展泵浦光束几何形状来提高脉冲受激布里渊光谱的光谱分辨率。
Opt Express. 2023 Apr 24;31(9):14604-14616. doi: 10.1364/OE.487131.
3
Nonlinear microscopy using impulsive stimulated Brillouin scattering for high-speed elastography.
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Opt Express. 2022 Feb 14;30(4):4748-4758. doi: 10.1364/OE.449980.
4
Interplay between Thickness, Defects, Optical Properties, and Photoconductivity at the Centimeter Scale in Layered GaS.层状硫化镓中厘米尺度下厚度、缺陷、光学性质和光电导之间的相互作用
Nanomaterials (Basel). 2022 Jan 28;12(3):465. doi: 10.3390/nano12030465.
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Exploring the Thickness-Dependence of the Properties of Layered Gallium Sulfide.探索层状硫化镓性质的厚度依赖性。
Front Chem. 2021 Nov 19;9:781467. doi: 10.3389/fchem.2021.781467. eCollection 2021.
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