title: Electrical probing of submicroliter liquid using graphene strip transistors built on a nanopipette.
abstract: Graphene sheets made by chemical vapor deposition are transferred onto a glass nanopipette to form graphene strips. Two strips are connected at the nanopipette tip end to form a transistor channel. This graphene-based transistor can be operated in a liquid-gating condition, thereby allowing the electrical detection of the pH value of a droplet with submicroliter volume.
authors.affiliation: Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan.
authors.forename: Chang-Hsiao
authors.initials: CH
authors.lastname: Chen
authors.forename: Cheng-Te
authors.initials: CT
authors.lastname: Lin
authors.forename: Yi-Hsien
authors.initials: YH
authors.lastname: Lee
authors.forename: Keng-Ku
authors.initials: KK
authors.lastname: Liu
authors.forename: Ching-Yuan
authors.initials: CY
authors.lastname: Su
authors.forename: Wenjing
authors.initials: W
authors.lastname: Zhang
authors.forename: Lain-Jong
authors.initials: LJ
authors.lastname: Li
mesh_terms: D006108:Graphite / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D014173:Transistors, Electronic
chemical_list: D006108:Graphite