title: Wide bandwidth nanowire electromechanics on insulating substrates at room temperature.
abstract: We study InAs nanowire resonators fabricated on sapphire substrate with a local gate configuration. The key advantage of using an insulating sapphire substrate is that it results in a reduced parasitic capacitance, thus allowing both wide bandwidth actuation and detection using a network analyzer as well as signal detection at room temperature. Both in-plane and out-of-plane vibrational modes of the nanowire can be driven and the nonlinear response of the resonators studied. In addition, this technique enables the study of variation of thermal strains due to heating in nanostructures.
authors.affiliation: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India.
authors.forename: T S
authors.initials: TS
authors.lastname: Abhilash
authors.forename: John P
authors.initials: JP
authors.lastname: Mathew
authors.forename: Shamashis
authors.initials: S
authors.lastname: Sengupta
authors.forename: M R
authors.initials: MR
authors.lastname: Gokhale
authors.forename: Arnab
authors.initials: A
authors.lastname: Bhattacharya
authors.forename: Mandar M
authors.initials: MM
authors.lastname: Deshmukh