title: Torsional Resonators Based on Inorganic Nanotubes.
abstract: We study for the first time the resonant torsional behaviors of inorganic nanotubes, specifically tungsten disulfide (WS2) and boron nitride (BN) nanotubes, and compare them to that of carbon nanotubes. We have found WS2nanotubes to have the highest quality factor (Q) and torsional resonance frequency, followed by BN nanotubes and carbon nanotubes. Dynamic and static torsional spring constants of the various nanotubes were found to be different, especially in the case of WS2, possibly due to a velocity-dependent intershell friction. These results indicate that inorganic nanotubes are promising building blocks for high-Q nanoelectromechanical systems (NEMS).
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel.
authors.forename: Yiftach
authors.identifier: 0000-0002-0365-1314
authors.initials: Y
authors.lastname: Divon
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel.
authors.forename: Roi
authors.initials: R
authors.lastname: Levi
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Garel
authors.affiliation: International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Dmitri
authors.initials: D
authors.lastname: Golberg
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel.
authors.forename: Reshef
authors.identifier: 0000-0003-4071-0325
authors.initials: R
authors.lastname: Tenne
authors.affiliation: Department of Mechanical Engineering, Ben-Gurion University of the Negev , Beer-Sheva 8410501, Israel.
authors.forename: Assaf
authors.initials: A
authors.lastname: Ya'akobovitz
authors.affiliation: Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel.
authors.forename: Ernesto
authors.identifier: 0000-0002-9919-0734
authors.initials: E
authors.lastname: Joselevich
keywords: Nanotube; inorganic nanotubes; nanoelectromechanical systems (NEMS); nanomechanics; oscillator; torsion