Gold Film over SiO(2) Nanospheres-New Thermally Resistant Substrates for Surface-Enhanced Raman Scattering (SERS) Spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10403878" target="_blank" >RIV/00216208:11320/19:10403878 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/19:00335427

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=a22E.wQLT5" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=a22E.wQLT5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/nano9101426" target="_blank" >10.3390/nano9101426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gold Film over SiO(2) Nanospheres-New Thermally Resistant Substrates for Surface-Enhanced Raman Scattering (SERS) Spectroscopy

Popis výsledku v původním jazyce

Surface-enhanced Raman scattering (SERS) sensors are constructed from metallic plasmonic nanostructures providing high sensitivity and spectral reproducibility. In many cases, irradiation of the SERS substrate by the laser beam leads to an increase of the local temperature and consequently to thermal degradation of metallic nanostructure itself and/or adsorbed analyte. We report here a &quot;bottom-up&quot; technique to fabricate new thermally resistant gold &quot;film over nanosphere&quot; (FON) substrates for SERS. We elaborated the simple and straightforward method of preparation of homogeneously and closely packed monolayer of SiO(2) nanoparticles (50 nm in diameter) and covered it by a thin (20 nm) layer of magnetron-sputtered gold. The spectral testing using biologically important molecules (methylene blue, cationic porphyrin, and fungicide 1-methyl-1H-benzimidazole-2-thiol) proved a sensitivity and reproducibility of our AuSiO(2) substrates. The main advantage of such SERS-active substrates is high thermal stability and low intensity of background and signal of graphitic carbon.

Název v anglickém jazyce

Gold Film over SiO(2) Nanospheres-New Thermally Resistant Substrates for Surface-Enhanced Raman Scattering (SERS) Spectroscopy

Popis výsledku anglicky

Surface-enhanced Raman scattering (SERS) sensors are constructed from metallic plasmonic nanostructures providing high sensitivity and spectral reproducibility. In many cases, irradiation of the SERS substrate by the laser beam leads to an increase of the local temperature and consequently to thermal degradation of metallic nanostructure itself and/or adsorbed analyte. We report here a &quot;bottom-up&quot; technique to fabricate new thermally resistant gold &quot;film over nanosphere&quot; (FON) substrates for SERS. We elaborated the simple and straightforward method of preparation of homogeneously and closely packed monolayer of SiO(2) nanoparticles (50 nm in diameter) and covered it by a thin (20 nm) layer of magnetron-sputtered gold. The spectral testing using biologically important molecules (methylene blue, cationic porphyrin, and fungicide 1-methyl-1H-benzimidazole-2-thiol) proved a sensitivity and reproducibility of our AuSiO(2) substrates. The main advantage of such SERS-active substrates is high thermal stability and low intensity of background and signal of graphitic carbon.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10610 - Biophysics

Projekt

<a href="/cs/project/GA18-10897S" target="_blank" >GA18-10897S: Nové přístupy v povrchem zesílené optické spektroskopii pro vysoce citlivý a specifický biosenzing</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nanomaterials

ISSN

2079-4991

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

1426

Kód UT WoS článku

000495666800081

EID výsledku v databázi Scopus

2-s2.0-85073503873