1. Plasmo-thermomechanical radiation detector with on-chip optical readout
- Author
-
Qiancheng Zhao, Ozdal Boyraz, Jaeho Lee, Shiva Farzinazar, and Mohammad Wahiduzzaman Khan
- Subjects
Coupling ,Materials science ,business.industry ,Nanowire ,Physics::Optics ,Radiant energy ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Waveguide (optics) ,Atomic and Molecular Physics, and Optics ,Particle detector ,Wavelength ,Optics ,0103 physical sciences ,010306 general physics ,0210 nano-technology ,business ,Absorption (electromagnetic radiation) ,Plasmon - Abstract
Plasmonic structures have long proved their capabilities to concentrate and manipulate light in micro- and nano-scales that facilitate strong light-matter interactions. Besides electromagnetic properties, ultra-small plasmonic structures may lead to novel applications based on their mechanical properties. Here we report efficient coupling between optical absorption and mechanical deformation in nanoscales through plasmonically enhanced fishbone nanowires. Using tailorable absorbers, free-space radiation energy is converted into heat to thermally actuate the suspended nanowires whose deformation is sensed by the evanescent fields from a waveguide. The demonstration at 660 nm wavelength with above 30% absorption shows the potential of the device to detect nW/âHz power in an uncooled environment.
- Published
- 2018