title: Single electron charge sensitivity of liquid-gated carbon nanotube transistors.
abstract: Random telegraph signals corresponding to activated charge traps were observed with liquid-gated CNT FETs. The high signal-to-noise ratio that we observe demonstrates that single electron charge sensing is possible with CNT FETs in liquids at room temperature. We have characterized the gate-voltage dependence of the random telegraph signals and compared to theoretical predictions. The gate-voltage dependence clearly identifies the sign of the activated trapped charge.
authors.affiliation: Department of Physics, Oregon State University , Corvallis, Oregon 97331-6507, United States.
authors.forename: Tal
authors.initials: T
authors.lastname: Sharf
authors.forename: Neng-Ping
authors.initials: NP
authors.lastname: Wang
authors.forename: Joshua W
authors.initials: JW
authors.lastname: Kevek
authors.forename: Morgan A
authors.initials: MA
authors.lastname: Brown
authors.forename: Heather
authors.initials: H
authors.lastname: Wilson
authors.forename: Stefan
authors.initials: S
authors.lastname: Heinze
authors.forename: Ethan D
authors.initials: ED
authors.lastname: Minot
keywords: Carbon nanotube; charge traps; liquid-gate; low-frequency noise; random telegraph signals; single charge