Mechanical properties of rippled structure in suspended stacks of graphene

Hyunsoo Lee, Hyeondeuk Yong, K. B. Kim, Yongho Seo, Hoyeol Yun, Sangwook Lee

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Abstract

We studied the mechanical properties of a suspended graphene layers which have ripples with stripe pattern, by using an atomic force spectroscopy. The local spring constant of the rippled graphene layer has larger value at concave region and smaller at convex region. The attractive force and pull-off force between a tip and the sample also have larger values at the concave region. A local spring constant mapping on the suspended graphene with ripple was obtained and nonlinear behavior of the force-distance curve was analyzed regarding local deformation of the sample.

Original languageEnglish
Article number014302
JournalJournal of Applied Physics
Volume108
Issue number1
DOIs
StatePublished - 1 Jul 2010

Bibliographical note

Funding Information:
This work was supported by the Korean Science and Engineering Foundation (NRF) grants funded by the Korea government (MEST) Grant No. R01-2008-000-20185-0.

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