title: Exfoliation at the liquid/air interface to assemble reduced graphene oxide ultrathin films for a flexible noncontact sensing device.
abstract: 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.
authors.affiliation: i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, PR China; School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
authors.forename: Xuewen
authors.initials: X
authors.lastname: Wang
authors.forename: Zuoping
authors.initials: Z
authors.lastname: Xiong
authors.forename: Zheng
authors.initials: Z
authors.lastname: Liu
authors.forename: Ting
authors.initials: T
authors.lastname: Zhang
keywords: flexible devices; graphene; interfaces; noncontact; sensors