Open AccessOptical absorption properties and nanosensing application based on metallic rectangle nanoparticles array
Author(s) -
Chen Fang
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0786
Subject(s) - materials science , plasmon , refractive index , absorption (acoustics) , nanoparticle , rectangle , nanosensor , reflection (computer programming) , surface plasmon resonance , optics , optoelectronics , nanotechnology , composite material , computer science , mathematics , physics , programming language , geometry
This work studies field distribution and nanosensing based on a metallic rectangle nanoparticles arrays structure. The structure consists of a metallic rectangle nanoparticles layer, a dielectric layer and a metallic layer. A finite‐difference time‐domain approach is adopted to investigate the optical properties. Simulation results show that the localised surface plasmon resonance of the metallic rectangle nanoparticles give rise to absorption peaks in the spectra. Also, the absorption spectrum can be controlled by varying the geometrical parameters of the structure. It is also found that the reflection spectra dependence on the surrounding refractive index. The proposed structure can be used as an excellent plasmonic nanosensor. The simulation results show that the proposed plasmonic structure can serve as an optical absorber in the range of 700–1800 nm, which will have potential application in optical switching, optical modulator and nanosensors.