Graphene-enabled electrically switchable radar-absorbing surfaces

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dc.citation.volumeNumber6en_US
dc.contributor.authorBalci O.en_US
dc.contributor.authorPolat, E.O.en_US
dc.contributor.authorKakenov, N.en_US
dc.contributor.authorKocabas, C.en_US
dc.date.accessioned2016-02-08T09:57:30Z
dc.date.available2016-02-08T09:57:30Z
dc.date.issued2015en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractRadar-absorbing materials are used in stealth technologies for concealment of an object from radar detection. Resistive and/or magnetic composite materials are used to reduce the backscattered microwave signals. Inability to control electrical properties of these materials, however, hinders the realization of active camouflage systems. Here, using large-area graphene electrodes, we demonstrate active surfaces that enable electrical control of reflection, transmission and absorption of microwaves. Instead of tuning bulk material property, our strategy relies on electrostatic tuning of the charge density on an atomically thin electrode, which operates as a tunable metal in microwave frequencies. Notably, we report large-area adaptive radar-absorbing surfaces with tunable reflection suppression ratio up to 50 dB with operation voltages <5 V. Using the developed surfaces, we demonstrate various device architectures including pixelated and curved surfaces. Our results provide a significant step in realization of active camouflage systems in microwave frequencies. © 2015 Macmillan Publishers Limited. All rights reserved.en_US
dc.identifier.doi10.1038/ncomms7628en_US
dc.identifier.issn20411723
dc.identifier.urihttp://hdl.handle.net/11693/22247
dc.language.isoEnglishen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/ncomms7628en_US
dc.source.titleNature Communicationsen_US
dc.subjectgrapheneen_US
dc.subjectabsorptionen_US
dc.subjectalkeneen_US
dc.subjectelectrical propertyen_US
dc.subjectelectrodeen_US
dc.subjectmagnetic propertyen_US
dc.subjectmicrowave radiationen_US
dc.subjectradaren_US
dc.subjectArticleen_US
dc.subjectelectric conductivityen_US
dc.subjectelectric potentialen_US
dc.subjectelectrodeen_US
dc.subjectelectromagnetic radiationen_US
dc.subjectionic strengthen_US
dc.subjectmicrowave radiationen_US
dc.subjectoxidation reduction reactionen_US
dc.subjecttelecommunicationen_US
dc.titleGraphene-enabled electrically switchable radar-absorbing surfacesen_US
dc.typeArticleen_US
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