Tunable metasurfaces (Presentation Recording)
- Creators
-
Atwater, Harry A.
- Others:
- Engheta, N.
- Noginov, M. A.
- Zheludev, N. I.
Abstract
Metasurfaces composed of sub-wavelength artificial structures show promise for extraordinary light-manipulation and development of ultrathin optical components such as lenses, wave plates, orbital angular detection, and holograms over a broad range of the electromagnetic spectrum. However structures developed to date do not allow for post-fabrication control of antenna properties. We have investigated the integration of the transparent conductor indium tin oxide (ITO) active elements to realize gate-tunable phased arrays of subwavelength patch antenna in a metasurface configuration to enable gate tunable permittivity. The magnetic dipole resonance of each patch antenna interacts with the carrier density-dependent permittivity resonance of the ITO to enable phase and amplitude tunability. Operation of patch antennas and beam steering phased arrays will be discussed.
Additional Information
© 2015 SPIE. presentation video on SPIE's Digital Library.Attached Files
Published - 954422.pdf
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Additional details
- Eprint ID
- 64291
- Resolver ID
- CaltechAUTHORS:20160208-090758378
- Created
-
2016-02-08Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 9544