期刊
NANO LETTERS
卷 12, 期 3, 页码 1448-1452出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl204123h
关键词
Graphene; adhesion; delamination; transfer; flexible electronics
类别
资金
- National Research Foundation of Korea (NRF) [2011-0019177, 2011-0029835]
- Ministry of Knowledge Economy of Korea
- Center for Advanced Soft Electronics under Ministry of Education, Science and Technology, Korea [2011-0031638]
- National Research Foundation of Korea [과C6A1623, 2008-2002744, 2010-0029132, 2011-0031638] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Direct measurement of the adhesion energy of monolayer graphene as-grown on metal substrates is important to better understand its bonding mechanism and control the mechanical release of the graphene from the substrates, but it has not been reported yet. We report the adhesion energy of large-area monolayer graphene synthesized on copper measured by double cantilever beam fracture mechanics testing. The adhesion energy of 0.72 +/- 0.07 J m(-2) was found. Knowing the directly measured value, we further demonstrate the etching-free renewable transfer process of monolayer graphene that utilizes the repetition of the mechanical delamination followed by the regrowth of monolayer graphene on a copper substrate.
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