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Exfoliation at the Liquid/Air Interface to Assemble Reduced Graphene Oxide Ultrathin Films for a Flexible Noncontact Sensing Device
Author(s) -
Wang Xuewen,
Xiong Zuoping,
Liu Zheng,
Zhang Ting
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201404069
Subject(s) - graphene , materials science , oxide , transparency (behavior) , nanotechnology , exfoliation joint , homogeneity (statistics) , optoelectronics , interface (matter) , computer science , composite material , computer security , machine learning , metallurgy , capillary number , capillary action
Reduced graphene oxide ultrathin films are fabricated by a reproducible exfoliation method at the liquid/air interface, and they show high transparency, tunable sheet resistance, uniform electric conductivity, and structural homogeneity over a large area. A flexible relative humidity sensing matrix is demonstrated and it is shown to be excellent for close proximity sensing without touching it. This method opens up a novel avenue for future human–machine interaction applications.