Ultra-high sensitivity sensing based on ultraviolet plasmonic enhancements in semiconductor triangular prism meta-antenna systems

Optics Express
Zhihui HeWei Cui

Abstract

Silicon (Si), germanium (Ge), and gallium arsenide (GaAs) are familiar semiconductors that always act in the role of optical dielectrics. However, these semiconductors also have plasmonic behaviors in ultraviolet (UV) ranges due to the strong interband transitions or valence electrons. And few studies are aimed at investigating plasmonic properties in the semiconductor at the nanoscale. In this work, we discuss UV plasmonics and sensing properties in single and dimer Si, Ge, and GaAs triangular prism meta-antenna systems. The results show that obvious local surface plasmon resonances (LSPRs) can be realized in the proposed triangular prism meta-antennas, and the resonant wavelength, electromagnetic field distribution, surface charge distribution, and surface current density can be effectively tuned by structural and material parameters. In addition, we also find that the Si triangular prism meta-antenna shows more intense plasmonic responses in UV ranges than that in the Ge or GaAs triangular prism nanostructures. Especially, the phase difference between the triangular prism nanostructure and light source can effectively regulate the symbol and value of the surface charge. Moreover, the great enhancement of electric field can b...Continue Reading

References

Oct 16, 2007·Nature Materials·Anthony J HoffmanClaire Gmachl
Jun 4, 2008·Physical Review Letters·Aycan YurtseverDavid A Muller
Jun 22, 2010·Nano Letters·Na LiuHarald Giessen
Aug 10, 2010·Nature Materials·Nanfang YuFederico Capasso
Sep 6, 2011·Nature Nanotechnology·Long JuFeng Wang
Oct 18, 2012·Nano Letters·Mark W KnightNaomi J Halas
Feb 23, 2013·Physical Chemistry Chemical Physics : PCCP·Jeffrey M McMahonStephen K Gray
Jun 4, 2013·ACS Nano·Giulia MaidecchiFrancesco Bisio
Nov 28, 2013·ACS Nano·Mark W KnightNaomi J Halas
Jan 21, 2015·Nano Letters·Anne M WatsonHenry O Everitt
Jun 13, 2017·Nature Nanotechnology·Xiaoge LiuMark L Brongersma
Mar 17, 2019·Optics Express·Prashant ShekharZubin Jacob
Sep 29, 2019·Nano Letters·Zhaogang DongJoel K W Yang

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Imaging in CNS

Here is the latest research on cell imaging and imaging modalities, including light-sheet microscopy, in the central nervous system.

Related Papers

Equine Veterinary Journal
A E MatherS W J Reid
Clinical & Experimental Optometry : Journal of the Australian Optometrical Association
Hassan HashemiMehdi Khabazkhoob
© 2021 Meta ULC. All rights reserved