Friction Anisotropy-Driven Domain Imaging on Exfoliated Monolayer Graphene

被引：265

作者：

Choi, Jin Sik ^{[1
]}

Kim, Jin-Soo ^{[1
]}

Byun, Ik-Su ^{[1
]}

Lee, Duk Hyun ^{[1
]}

Lee, Mi Jung ^{[1
]}

Park, Bae Ho ^{[1
]}

Lee, Changgu ^{[2
]}

Yoon, Duhee ^{[3
]}

Cheong, Hyeonsik ^{[3
]}

Lee, Ki Ho ^{[4
]}

Son, Young-Woo ^{[4
]}

Park, Jeong Young ^{[5
]}

Salmeron, Miquel ^{[6
]}

机构：

[1] Konkuk Univ, Div Quantum Phases & Devices, Dept Phys, Seoul 143701, South Korea

[2] Sungkyunkwan Univ, Dept Mech Engn, Suwon 440746, South Korea

[3] Sogang Univ, Dept Phys, Seoul 121742, South Korea

[4] Korea Inst Adv Study, Seoul 130722, South Korea

[5] Korea Adv Inst Sci & Technol, Grad Sch Energy Environm Water & Sustainabil, NanoCentury KI, Taejon 305701, South Korea

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

SCIENCE | 2011年 / 333卷 / 6042期

关键词：

D O I：

10.1126/science.1207110

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Graphene produced by exfoliation has not been able to provide an ideal graphene with performance comparable to that predicted by theory, and structural and/or electronic defects have been proposed as one cause of reduced performance. We report the observation of domains on exfoliated monolayer graphene that differ by their friction characteristics, as measured by friction force microscopy. Angle-dependent scanning revealed friction anisotropy with a periodicity of 180 on each friction domain. The friction anisotropy decreased as the applied load increased. We propose that the domains arise from ripple distortions that give rise to anisotropic friction in each domain as a result of the anisotropic puckering of the graphene.

引用

页码：607 / 610

页数：4

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