CUED Publications database

Mechanical characterization and cleaning of CVD single-layer h-BN resonators

Cartamil-Bueno, SJ and Cavalieri, M and Wang, R and Houri, S and Hofmann, S and van der Zant, HSJ (2017) Mechanical characterization and cleaning of CVD single-layer h-BN resonators. npj 2D Materials and Applications, 1.

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Hexagonal boron nitride is a 2D material whose single-layer allotrope has not been intensively studied despite being the substrate for graphene electronics. Its transparency and stronger interlayer adhesion with respect to graphene makes it difficult to work with, and few applications have been proposed. We have developed a transfer technique for this extra-adhesive material that does not require its visual localization, and fabricated mechanical resonators made out of chemical vapor-deposited single-layer hexagonal boron nitride. The suspended material was initially contaminated with polymer residues from the transfer, and the devices showed an unexpected tensioning when cooling them to 3 K. After cleaning in harsh environments with air at 450 °C and ozone, the temperature dependence changed with f Q products reaching 2 × 10 Hz at room temperature. This work paves the way to the realization of highly sensitive mechanical systems based on hexagonal boron nitride, which could be used as an alternative material to SiN for optomechanics experiments at room temperature. 0 10

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 11 Dec 2018 01:38
Last Modified: 15 Apr 2021 06:14
DOI: 10.1038/s41699-017-0020-8