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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Abstract

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
Volume23
Issue number9
Pages (from-to)11586-11599
ISSN1094-4087
DOIs
Publication statusPublished - 2015

Keywords

  • OPTICS
  • ELECTROMIGRATION
  • BREAKDOWN
  • EMISSION
  • AIR

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