title: Carbon nanotube field effect transistors with suspended graphene gates.
abstract: Novel field effect transistors with suspended graphene gates are demonstrated. By incorporating mechanical motion of the gate electrode, it is possible to improve the switching characteristics compared to a static gate, as shown by a combination of experimental measurements and numerical simulations. The mechanical motion of the graphene gate is confirmed by using atomic force microscopy to directly measure the electrostatic deflection. The device geometry investigated here can also provide a sensitive measurement technique for detecting high-frequency motion of suspended membranes as required, e.g., for mass sensing.
authors.affiliation: Electrical and Information Technology, Lund University, Box 118, SE-22100, Sweden.
authors.forename: Johannes
authors.initials: J
authors.lastname: Svensson
authors.forename: Niklas
authors.initials: N
authors.lastname: Lindahl
authors.forename: Hoyeol
authors.initials: H
authors.lastname: Yun
authors.forename: Miri
authors.initials: M
authors.lastname: Seo
authors.forename: Daniel
authors.initials: D
authors.lastname: Midtvedt
authors.forename: Yury
authors.initials: Y
authors.lastname: Tarakanov
authors.forename: Niclas
authors.initials: N
authors.lastname: Lindvall
authors.forename: Oleg
authors.initials: O
authors.lastname: Nerushev
authors.forename: Jari
authors.initials: J
authors.lastname: Kinaret
authors.forename: Sangwook
authors.initials: S
authors.lastname: Lee
authors.forename: Eleanor E B
authors.initials: EE
authors.lastname: Campbell
mesh_terms: D004553:Electric Conductivity; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D018625:Microscopy, Atomic Force / Q000379:methods; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055672:Static Electricity; D013696:Temperature
chemical_list: D037742:Nanotubes, Carbon; D006108:Graphite