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Fast Antenna-Assisted Switches Could Expand Potential for Optical Memory

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Fast optical switches developed using nanoantenna-assisted phase transition could open novel routes to the next generation of optoelectronics. The properties of nanoantennas were tuned to achieve low energy optical switching of a phase-change material, vanadium dioxide (VO2). Gold nanoantennas were fabricated on top of this thin film and were used to locally drive the phase transition of the VO2. The picosecond all-optical switching of the local phase transition in plasmonic antenna VO2 hybrids was shown by exploiting strong resonant field enhancement and selective optical pumping in...Read full article

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