Show simple item record

dc.contributor.authorChen, Paiyen
dc.contributor.authorFarhat, Mohamed
dc.contributor.authorAskarpour, Amir Nader
dc.contributor.authorTymchenko, Mykhailo
dc.contributor.authorAlù, Andrea
dc.date.accessioned2015-08-03T12:08:46Z
dc.date.available2015-08-03T12:08:46Z
dc.date.issued2014-09-03
dc.identifier.citationChen, P.-Y., Farhat, M., Askarpour, A. N., Tymchenko, M., & Alù, A. (2014). Infrared beam-steering using acoustically modulated surface plasmons over a graphene monolayer. Journal of Optics, 16(9), 094008. doi:10.1088/2040-8978/16/9/094008
dc.identifier.issn20408978
dc.identifier.doi10.1088/2040-8978/16/9/094008
dc.identifier.urihttp://hdl.handle.net/10754/563747
dc.description.abstractWe model and design a graphene-based infrared beamformer based on the concept of leaky-wave (fast traveling wave) antennas. The excitation of infrared surface plasmon polaritons (SPPs) over a 'one-atom-thick' graphene monolayer is typically associated with intrinsically 'slow light'. By modulating the graphene with elastic vibrations based on flexural waves, a dynamic diffraction grating can be formed on the graphene surface, converting propagating SPPs into fast surface waves, able to radiate directive infrared beams into the background medium. This scheme allows fast on-off switching of infrared emission and dynamic tuning of its radiation pattern, beam angle and frequency of operation, by simply varying the acoustic frequency that controls the effective grating period. We envision that this graphene beamformer may be integrated into reconfigurable transmitter/receiver modules, switches and detectors for THz and infrared wireless communication, sensing, imaging and actuation systems.
dc.description.sponsorshipThe authors would like to thank Dr Sebastien Guenneau for fruitful discussions on graphene acoustics. This work has been partially supported by the Welch Foundation with grant no. F-1662, the Army Research Office with grant no. W911NF-08-1-0348 and the Air Force Office of Scientific Research with grant no. FA9550-13-1-0204.
dc.publisherIOP Publishing
dc.subjectacoustics
dc.subjectbeam steering
dc.subjectgraphene
dc.subjectleaky-waves
dc.subjectmetamaterials
dc.titleInfrared beam-steering using acoustically modulated surface plasmons over a graphene monolayer
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalJournal of Optics
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Texas at AustinAustin, TX, United States
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Wayne State UniversityDetroit, MI, United States
kaust.personFarhat, Mohamed
dc.date.published-online2014-09-03
dc.date.published-print2014-09-01


This item appears in the following Collection(s)

Show simple item record