Skip to main content

Research Repository

See what's under the surface

Advanced Search

Nanomechanical probing of the layer/substrate interface of an exfoliated InSe sheet on sapphire

Beardsley, R.P.; Akimov, Andrey V.; Greener, Jake D.G.; Mudd, Gary W.; Sandeep, Sathyan; Kudrynskyi, Zakhar R.; Kovalyuk, Zakhar D.; Patanè, Amalia; Kent, Anthony J.

Authors

R.P. Beardsley

Andrey V. Akimov

Jake D.G. Greener

Gary W. Mudd

Sathyan Sandeep

Zakhar R. Kudrynskyi

Zakhar D. Kovalyuk

Amalia Patanè

Anthony J. Kent



Abstract

Van der Waals (vdW) layered crystals and heterostructures have attracted substantial interest for potential applications in a wide range of emerging technologies. An important, but often overlooked, consideration in the development of implementable devices is phonon transport through the structure interfaces. Here we report on the interface properties of exfoliated InSe on a sapphire substrate. We use a picosecond acoustic technique to probe the phonon resonances in the InSe vdW layered crystal. Analysis of the nanomechanics indicates that the InSe is mechanically decoupled from the substrate and thus presents an elastically imperfect interface. A high degree of phonon isolation at the interface points toward applications in thermoelectric devices, or the inclusion of an acoustic transition layer in device design. These findings demonstrate basic properties of layered structures and so illustrate the usefulness of nanomechanical probing in nanolayer/nanolayer or nanolayer/substrate interface tuning in vdW heterostructures.

Journal Article Type Article
Publication Date Jun 3, 2016
Journal Scientific Reports
Print ISSN 2045-2322
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 6
APA6 Citation Beardsley, R., Akimov, A. V., Greener, J. D., Mudd, G. W., Sandeep, S., Kudrynskyi, Z. R., …Kent, A. J. (2016). Nanomechanical probing of the layer/substrate interface of an exfoliated InSe sheet on sapphire. Scientific Reports, 6, https://doi.org/10.1038/srep26970
DOI https://doi.org/10.1038/srep26970
Publisher URL http://www.nature.com/articles/srep26970
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files

srep26970.pdf (505 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations

;