大面积悬浮石墨烯在与强激光相互作用下的稳健性。

Robustness of large-area suspended graphene under interaction with intense laser.

作者信息

Kuramitsu Y, Minami T, Hihara T, Sakai K, Nishimoto T, Isayama S, Liao Y T, Wu K T, Woon W Y, Chen S H, Liu Y L, He S M, Su C Y, Ota M, Egashira S, Morace A, Sakawa Y, Abe Y, Habara H, Kodama R, Döhl L N K, Woolsey N, Koenig M, Kumar H S, Ohnishi N, Kanasaki M, Asai T, Yamauchi T, Oda K, Kondo Ko, Kiriyama H, Fukuda Y

机构信息

Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.

Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.

出版信息

Sci Rep. 2022 Feb 16;12(1):2346. doi: 10.1038/s41598-022-06055-4.

DOI:10.1038/s41598-022-06055-4

PMID:35173182

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8850449/

Abstract

Graphene is known as an atomically thin, transparent, highly electrically and thermally conductive, light-weight, and the strongest 2D material. We investigate disruptive application of graphene as a target of laser-driven ion acceleration. We develop large-area suspended graphene (LSG) and by transferring graphene layer by layer we control the thickness with precision down to a single atomic layer. Direct irradiations of the LSG targets generate MeV protons and carbons from sub-relativistic to relativistic laser intensities from low contrast to high contrast conditions without plasma mirror, evidently showing the durability of graphene.

摘要

石墨烯是一种原子级薄、透明、具有高导电性和导热性、轻质且最强的二维材料。我们研究了将石墨烯作为激光驱动离子加速目标的突破性应用。我们开发了大面积悬浮石墨烯（LSG），通过逐层转移石墨烯，我们能够精确控制其厚度直至单原子层。在无等离子体镜的情况下，从低对比度到高对比度条件下，以亚相对论到相对论激光强度直接照射LSG靶，可产生兆电子伏特的质子和碳，这明显显示出石墨烯的耐久性。