dc.contributor.author
Kirchhof, Jan N.
dc.contributor.author
Weinel, Kristina
dc.contributor.author
Heeg, Sebastian
dc.contributor.author
Deinhart, Victor
dc.contributor.author
Kovalchuk, Sviatoslav
dc.contributor.author
Höflich, Katja
dc.contributor.author
Bolotin, Kirill I.
dc.date.accessioned
2021-04-28T07:14:15Z
dc.date.available
2021-04-28T07:14:15Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/30566
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-30306
dc.description.abstract
In the field of phononics, periodic patterning controls vibrations and thereby the flow of heat and sound in matter. Bandgaps arising in such phononic crystals (PnCs) realize low-dissipation vibrational modes and enable applications toward mechanical qubits, efficient waveguides, and state-of-the-art sensing. Here, we combine phononics and two-dimensional materials and explore tuning of PnCs via applied mechanical pressure. To this end, we fabricate the thinnest possible PnC from monolayer graphene and simulate its vibrational properties. We find a bandgap in the megahertz regime within which we localize a defect mode with a small effective mass of 0.72 ag = 0.002 mphysical. We exploit graphene's flexibility and simulate mechanical tuning of a finite size PnC. Under electrostatic pressure up to 30 kPa, we observe an upshift in frequency of the entire phononic system by similar to 350%. At the same time, the defect mode stays within the bandgap and remains localized, suggesting a high-quality, dynamically tunable mechanical system.
en
dc.format.extent
9 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Nanomechanics
en
dc.subject
phononic crystal
en
dc.subject
optomechanics
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Tunable Graphene Phononic Crystal
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1021/acs.nanolett.0c04986
dcterms.bibliographicCitation.journaltitle
Nano Letters
dcterms.bibliographicCitation.number
5
dcterms.bibliographicCitation.pagestart
2174
dcterms.bibliographicCitation.pageend
2182
dcterms.bibliographicCitation.volume
21
dcterms.bibliographicCitation.url
https://doi.org/10.1021/acs.nanolett.0c04986
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
1530-6984
dcterms.isPartOf.eissn
1530-6992
refubium.resourceType.provider
WoS-Alert