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Subwavelength Position Sensing Using Nonlinear Feedback and Wave Chaos

dc.contributor.author Cohen, Seth D
dc.contributor.author Cavalcante, Hugo
dc.contributor.author Gauthier, Daniel J
dc.date.accessioned 2012-02-13T14:40:26Z
dc.date.available 2012-02-13T14:40:26Z
dc.date.issued 2011-12-16
dc.identifier.uri https://hdl.handle.net/10161/5101
dc.description.abstract We demonstrate a position-sensing technique that relies on the inherent sensitivity of chaos, where we illuminate a subwavelength object with a complex structured radio-frequency field generated using wave chaos and nonlinear feedback. We operate the system in a quasiperiodic state and analyze changes in the frequency content of the scalar voltage signal in the feedback loop. This allows us to extract the object’s position with a one-dimensional resolution of =10 000 and a two-dimensional resolution of =300, where is the shortest wavelength of the illuminating source.
dc.language.iso en_US
dc.publisher American Physical Society
dc.relation.isversionof 10.1103/PhysRevLett.107.254103
dc.title Subwavelength Position Sensing Using Nonlinear Feedback and Wave Chaos
dc.type Journal article
duke.description.issue 25
duke.description.volume 107
dc.relation.journal Physical Review Letters
pubs.begin-page 254101


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