Torsional Resonators Based on Inorganic Nanotubes

Yiftach Divon; Roi Levi; Jonathan Garel; Dmitri Golberg; Reshef Tenne; Assaf Ya'akobovitz; Ernesto Joselevich

doi:10.1021/acs.nanolett.6b03012

Torsional Resonators Based on Inorganic Nanotubes

Nano Lett. 2017 Jan 11;17(1):28-35. doi: 10.1021/acs.nanolett.6b03012. Epub 2016 Dec 29.

Authors

Yiftach Divon¹, Roi Levi¹, Jonathan Garel¹, Dmitri Golberg², Reshef Tenne¹, Assaf Ya'akobovitz³, Ernesto Joselevich¹

Affiliations

¹ Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot 76100, Israel.
² International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
³ Department of Mechanical Engineering, Ben-Gurion University of the Negev , Beer-Sheva 8410501, Israel.

PMID: 28032770
DOI: 10.1021/acs.nanolett.6b03012

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 WS₂ nanotubes 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).

Keywords: Nanotube; inorganic nanotubes; nanoelectromechanical systems (NEMS); nanomechanics; oscillator; torsion.

Publication types

Research Support, Non-U.S. Gov't
Letter