Control of plasmonic nanoantennas by reversible metal-insulator transition
- Georgia State Univ., Atlanta, GA (United States)
- Vanderbilt Univ., Nashville, TN (United States)
We demonstrate dynamic reversible switching of VO2 insulator-to-metal transition (IMT) locally on the scale of 15 nm or less and control of nanoantennas, observed for the first time in the near-field. Using polarization-selective near-field imaging techniques, we simultaneously monitor the IMT in VO2 and the change of plasmons on gold infrared nanoantennas. Structured nanodomains of the metallic VO2 locally and reversibly transform infrared plasmonic dipole nanoantennas to monopole nanoantennas. Fundamentally, the IMT in VO2 can be triggered on femtosecond timescale to allow ultrafast nanoscale control of optical phenomena. These unique features open up promising novel applications in active nanophotonics.
- Research Organization:
- Georgia State Univ., Atlanta, GA (United States); Georgia State University
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- SC0007043; sc0007043
- OSTI ID:
- 1326183
- Alternate ID(s):
- OSTI ID: 1454701
- Journal Information:
- Scientific Reports, Vol. 5; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Plasmon-Tunable Tip Pyramids: Monopole Nanoantennas for Near-Field Scanning Optical Microscopy
Mapping Photoemission and Hot-Electron Emission from Plasmonic Nanoantennas