title: Permanently reconfigured metamaterials due to terahertz induced mass transfer of gold.
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.
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Strikwerda
authors.forename: Maksim
authors.initials: M
authors.lastname: Zalkovskij
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Iwaszczuk
authors.forename: Dennis Lund
authors.initials: DL
authors.lastname: Lorenzen
authors.forename: Peter Uhd
authors.initials: PU
authors.lastname: Jepsen