Permanently reconfigured metamaterials due to terahertz induced mass transfer of gold

Andrew Strikwerda, Maksim Zalkovskij, Krzysztof Iwaszczuk, Dennis Lund Lorenzen, Peter Uhd Jepsen

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    We present a new technique for permanent metamaterial reconfiguration via optically induced mass transfer of gold. This mass transfer, which can be explained by field-emission induced electromigration, causes a geometric change in the metamaterial sample. Since a metamaterial's electromagnetic response is dictated by its geometry, this structural change massively alters the metamaterial's behavior. We show this by optically forming a conducting pathway between two closely spaced dipole antennas, thereby changing the resonance frequency by a factor of two. After discussing the physics of the process, we conclude by presenting an optical fuse that can be used as a sacrificial element to protect sensitive components, demonstrating the applicability of optically induced mass transfer for device design. (C)2015 Optical Society of America
    Original languageEnglish
    JournalOptics Express
    Issue number9
    Pages (from-to)11586-11599
    Publication statusPublished - 2015


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