Author Affiliations

Kaichen Dong,^1,2,4 Sukjoon Hong,^3,7 Yang Deng,¹ He Ma,⁵ Jiachen Li,⁵ Xi Wang,¹ Junyeob Yeo,^3,8 Letian Wang,³ Shuai Lou,¹ Kyle B. Tom,^1,2 Kai Liu,⁶ Zheng You,⁴ Yang Wei,⁵ Costas P. Grigoropoulos,³ Jie Yao,^1,2,* and Junqiao Wu^1,2,*

¹Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA

²Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

³Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA

⁴State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China

⁵Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China

⁶State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

⁷Department of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do, 15588, Republic of Korea

⁸Department of Physics, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu 41566, Republic of Korea

^*Corresponding author: yaojie@berkeley.edu, wuj@berkeley.edu