What is it about?
An optical antenna is presented, which is made from a single gold crystal and electrically contacted in a way that makes it free floating. Applying a voltage allows to increase the distance between the two antenna arms and thus alter the optical properties reversibly.
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Why is it important?
Switching optical properties with an electric voltage is a key to novel electro-optical applications and sensing. The unique mechanic control mechanism is also interesting for opto-mechanics.
Perspectives
This is a really nice work showing the potential of monocrystalline gold flakes as a high-quality material for plasmonic applications.
Dr Thorsten Viktor Feichtner
Julius-Maximilians-Universitat Wurzburg
Read the Original
This page is a summary of: Electromechanically Tunable Suspended Optical Nanoantenna, Nano Letters, April 2016, American Chemical Society (ACS),
DOI: 10.1021/acs.nanolett.6b00323.
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