Plasmomechanical Resonators Based on Dimer Nanoantennas.
Nanomechanical resonators are highly suitable as sensors of minute forces, displacements, or masses. We realize a single plasmonic dimer antenna of subwavelength size, integrated with silicon nitride nanobeams. The sensitive dependence of the antenna response on the beam displacement creates a plasmomechanical system of deeply subwavelength size in all dimensions. We use it to demonstrate transduction of thermal vibrations to scattered light fields and discuss the noise properties and achievable coupling strengths in these systems.
†Center for Nanophotonics, FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
Rutger
R
Thijssen
‡École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
Tobias J
TJ
Kippenberg
†Center for Nanophotonics, FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
Albert
A
Polman
†Center for Nanophotonics, FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.
Ewold
E
Verhagen
Plasmonics; nanoantennas; nanomechanical transducers; near-field interactions; optomechanics