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Voltage switching of a VO2 memory metasurface using ionic gel
- Source :
- Applied Physics Letters. 105:041117
- Publication Year :
- 2014
- Publisher :
- AIP Publishing, 2014.
-
Abstract
- We demonstrate an electrolyte-based voltage tunable vanadium dioxide (VO2) memory metasurface. Large spatial scale, low voltage, non-volatile switching of terahertz (THz) metasurface resonances is achieved through voltage application using an ionic gel to drive the insulator-to-metal transition in an underlying VO2 layer. Positive and negative voltage application can selectively tune the metasurface resonance into the “off” or “on” state by pushing the VO2 into a more conductive or insulating regime respectively. Compared to graphene based control devices, the relatively long saturation time of resonance modification in VO2 based devices suggests that this voltage-induced switching originates primarily from electrochemical effects related to oxygen migration across the electrolyte–VO2 interface.
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 105
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........7df44f5ed288495aee4daf748451b23c
- Full Text :
- https://doi.org/10.1063/1.4891765