Document Detail

Sensitivity to refractive index of high-aspect-ratio nanofins with optical vortex.
MedLine Citation:
PMID:  23186947     Owner:  NLM     Status:  Publisher    
An easy and large-scale fabrication technique of metal fins was used to produce periodic Au fin arrays that realized light confinement in the near-infrared region. Light confinement was revealed by vortex patterns in the optical power flow of an array of high-aspect-ratio fins (height of 1000 nm for a width of 50 nm). The light confinement resulted in sharp dips in the reflectance spectrum of the high-aspect-ratio fin array. The wavelengths of the reflectance dips were found to shift toward higher values when the refractive index of the surrounding medium was increased. Experimental and simulated dip shift values were in good agreement with a demonstrated sensitivity of 580 nm per refractive index unit.
Etsuo Maeda; Yaerim Lee; Youjiro Kobayashi; Akiko Taino; Mari Koizumi; Shigenori Fujikawa; Jean-Jacques Delaunay
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-27
Journal Detail:
Title:  Nanotechnology     Volume:  23     ISSN:  1361-6528     ISO Abbreviation:  Nanotechnology     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  505502     Citation Subset:  -    
School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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