Surface-Enhanced Raman Scattering on Gold Nanohole Arrays in Symmetrical Dielectric Environments Exhibiting Electric Field Extension
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F16%3A00469641" target="_blank" >RIV/67985882:_____/16:00469641 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/acs.jpcc.6b08294" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.6b08294</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.6b08294" target="_blank" >10.1021/acs.jpcc.6b08294</a>
Alternative languages
Result language
angličtina
Original language name
Surface-Enhanced Raman Scattering on Gold Nanohole Arrays in Symmetrical Dielectric Environments Exhibiting Electric Field Extension
Original language description
The electromagnetic enhancement in surface enhanced Raman scattering (SERS) caused by localized surface plasmon resonance is a near-field effect, often limiting the practicality of SERS in many applications. However, no attempts have been made to investigate field extension through symmetrical refractive index modulation in a SERS-based system. Here, we report the development and characterization of refractive index-matched SERS substrates supporting electric field extension to realize what is termed "long-range SERS" (LR-SERS). Finite-difference time-domain simulations were employed to tune the plasmonic responses and investigate electric field distributions of gold nanohole arrays (NHAs) as a function of the dielectric environment and geometric parameters. SERS substrates supporting long-range behavior were compared against "conventional" substrates without long-range behavior. SERS intensities from rhodamine 6G (R6G) aqueous solutions of 2.0 X 10(8) and 1.5 X 10(2) counts s(-1)mW(-1) were produced by the LR-SERS and conventional substrates, respectively, on the gold surface. Moreover, a signal response of 9.0 x 10(1) counts s-imlArl was produced by LR-SERS substrates with a 10 nm separation between the R6G solution and NHA, while no signal was observed from the conventional substrate. As a proof of principle study, the results demonstrate the potential to use LR-SERS substrates in applications where the target analyte is located further from the SERS-active surface
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BO - Biophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GBP205%2F12%2FG118" target="_blank" >GBP205/12/G118: Nanobiophotonics for future health care</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry C
ISSN
1932-7447
e-ISSN
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Volume of the periodical
120
Issue of the periodical within the volume
44
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
25519-25529
UT code for WoS article
000387737900039
EID of the result in the Scopus database
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