Non-plasmonic nanoantennas for surface enhanced spectroscopies with ultra-low heat conversion
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Nanoplasmonics has recently revolutionized our ability to control light on the nanoscale. Using metallic nanostructures with tailored shapes, it is possible to efficiently focus light into nanoscale field 'hot spots'. High field enhancement factors have been achieved in such optical nanoantennas, enabling transformative science in the areas of single molecule interactions, highly enhanced nonlinearities and nanoscale waveguiding. Unfortunately, these large enhancements come at the price of high optical losses due to absorption in the metal, severely limiting real-world applications. Via the realization of a novel nanophotonic platform based on dielectric nanostructures to form efficient nanoantennas with ultra-low light-into-heat conversion, here we demonstrate an approach that overcomes these limitations. We show that dimer-like silicon-based single nanoantennas produce both high surface enhanced fluorescence and surface enhanced Raman scattering, while at the same time generating a negligible temperature increase in their hot spots and surrounding environments.
Date Issued
2015-08-04
Date Acceptance
2015-06-23
Citation
Nature Communications, 2015, 6 (7)
ISSN
2041-1723
Publisher
Nature Publishing Group
Journal / Book Title
Nature Communications
Volume
6
Issue
7
Copyright Statement
© 2015, Rights Managed by Nature Publishing Group
License URL
Sponsor
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://www.ncbi.nlm.nih.gov/pubmed/26238815
PII: ncomms8915
Grant Number
EP/M013812/1
EP/I004343/1
EP/H000844/1
Subjects
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
SILICON NANOPARTICLES
FIELD ENHANCEMENT
LIGHT
GOLD
GENERATION
EFFICIENCY
SCATTERING
PLATFORM
HOTSPOTS
Publication Status
Published
Coverage Spatial
England
Article Number
ARTN 7915