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Plasmonic switches: Resonance‐Coupling‐Based Plasmonic Switches (Small 22/2010)
Author(s) -
Ming Tian,
Zhao Lei,
Xiao Manda,
Wang Jianfang
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201090077
Subject(s) - nanorod , plasmon , photonics , materials science , surface plasmon resonance , optoelectronics , photochromism , coupling (piping) , optical switch , resonance (particle physics) , nanotechnology , nanoparticle , physics , particle physics , metallurgy
The cover image features a plasmonic nanoswitch, which is based on the controllable plasmonic‐molecular resonance coupling between single gold nanorods and photochromic molecules. The gold nanorods and photochromic molecules are both embedded in a layer of mesostructured silica. The switching behavior, which is triggered by UV illumination, was monitored by the dark‐field scattering technique. The estimated power and energy required for operating a single nanorod plasmonic switch are ∼13 pW and ∼39 pJ, respectively, while the modulation depth reaches up to 7.2 dB. This optical control based on the surface plasmon can contribute as a component to plasmonic circuits, which is crucial in solving the size‐compatibility problem between electronics and photonics and in merging electronics and photonics together both structurally and functionally. For more information, please read the Communication “Resonance‐Coupling‐Based Plasmonic Switches” by J. F. Wang and co‐workers, beginning on page 2514 .