title: Flexible graphene-based chemical sensors on paper substrates.
abstract: Graphene-based, flexible NO(2) sensors on paper substrates exhibited an immediate response (32-39%) once exposed to 200 ppm NO(2) gas under a strain of 0.5%. Chemical vapor deposition-grown graphene with a supporting poly(methyl methacrylate) layer was transferred onto paper substrates, followed by formation of two electrodes using silver paste. Current-voltage characteristics and dynamic sensing response were obtained under both relaxed and strained conditions. We demonstrate a facile method without complex photo-lithography and high vacuum processes for fabricating graphene-based flexible NO(2) sensors on paper substrates with high sensing response.
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, Seoul 136-701, Republic of Korea.
authors.forename: Gwangseok
authors.initials: G
authors.lastname: Yang
authors.forename: Chongmin
authors.initials: C
authors.lastname: Lee
authors.forename: Jihyun
authors.initials: J
authors.lastname: Kim
authors.forename: Fan
authors.initials: F
authors.lastname: Ren
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Pearton