Surface Plasmon Polaritons on Silver Gratings for Optimal SERS Response

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F15%3A00230122" target="_blank" >RIV/68407700:21230/15:00230122 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/15:43900164 RIV/60461373:22340/15:43900164 RIV/60461373:22810/15:43900164 RIV/67985858:_____/15:00472690

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jpcc.5b01793" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.5b01793</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.5b01793" target="_blank" >10.1021/acs.jpcc.5b01793</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface Plasmon Polaritons on Silver Gratings for Optimal SERS Response

Popis výsledku v původním jazyce

One of the most important obstacles for the application of surface enhanced Raman spectroscopy (SERS) is the poor reproducibility of SERS active substrates: SERS intensity can be varied from one substrate to another and moreover along the one substrate surface. Reproducible SERS substrate can be prepared through introduction of highly ordered metal array, where light focusing is achieved through excitation of surface plasmon-polaritons (SPPs). In this work, excimer laser patterning of poly(methyl methacrylate) followed by silver evaporation is proposed as an effective way for the creation of reproducible and effective surface plasmon-polaritons (SPP)-based SERS substrate. Detailed theoretical and experimental studies were performed to optimize structure parameter for effective SPP excitation. It was found that the narrow range of grating periodicity and metal thickness exist, where SPPs can be most efficiently excited. Despite the fact that SERS response was almost always achieved, the enhancement factor was found to vary more with the effectivity of SPP excitation. When the real structure parameters were set to optimal for SPP excitation, a SERS enhancement factor was achieved up to four times.

Název v anglickém jazyce

Surface Plasmon Polaritons on Silver Gratings for Optimal SERS Response

Popis výsledku anglicky

One of the most important obstacles for the application of surface enhanced Raman spectroscopy (SERS) is the poor reproducibility of SERS active substrates: SERS intensity can be varied from one substrate to another and moreover along the one substrate surface. Reproducible SERS substrate can be prepared through introduction of highly ordered metal array, where light focusing is achieved through excitation of surface plasmon-polaritons (SPPs). In this work, excimer laser patterning of poly(methyl methacrylate) followed by silver evaporation is proposed as an effective way for the creation of reproducible and effective surface plasmon-polaritons (SPP)-based SERS substrate. Detailed theoretical and experimental studies were performed to optimize structure parameter for effective SPP excitation. It was found that the narrow range of grating periodicity and metal thickness exist, where SPPs can be most efficiently excited. Despite the fact that SERS response was almost always achieved, the enhancement factor was found to vary more with the effectivity of SPP excitation. When the real structure parameters were set to optimal for SPP excitation, a SERS enhancement factor was achieved up to four times.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

The Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

119

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

9506-9512

Kód UT WoS článku

000353930700057

EID výsledku v databázi Scopus

2-s2.0-84928786618