Low-temperature catalyzed growth and plasmonic properties of columnar Au-SiOx nanocomposite thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00573864" target="_blank" >RIV/68378271:_____/23:00573864 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1615/InterfacPhenomHeatTransfer.2023047643" target="_blank" >https://doi.org/10.1615/InterfacPhenomHeatTransfer.2023047643</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1615/InterfacPhenomHeatTransfer.2023047643" target="_blank" >10.1615/InterfacPhenomHeatTransfer.2023047643</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Low-temperature catalyzed growth and plasmonic properties of columnar Au-SiOx nanocomposite thin films

Popis výsledku v původním jazyce

The optical properties of noble metal nanoparticles can be efficiently controlled by their incorporation into host matrix films.We report on the fabrication of composite films of gold NPs in a silicon suboxide matrix by a novel approach using a combination of pulsed laser deposition for NP production and gas-jet,electron-beam plasma chemical vapor deposition for low-temperature (300°C) synthesis of a SiOx (x = 0.38–1.55) thin film as a matrix for the NPs.The produced nanocomposite exhibits unexpected plasmonic properties,non-monotonically dependent on the matrix thickness,due to a porous columnar matrix structure grown from the NPs with variable oxygen content along the columns.This implies that low-temperature,gold-catalyzed oxidation of silicon occurs during the structure growth.Calculations based on Mie theory show that the refractive index of the obtained SiOx matrix can be as low as 1.2 at certain film thicknesses.

Název v anglickém jazyce

Low-temperature catalyzed growth and plasmonic properties of columnar Au-SiOx nanocomposite thin films

Popis výsledku anglicky

The optical properties of noble metal nanoparticles can be efficiently controlled by their incorporation into host matrix films.We report on the fabrication of composite films of gold NPs in a silicon suboxide matrix by a novel approach using a combination of pulsed laser deposition for NP production and gas-jet,electron-beam plasma chemical vapor deposition for low-temperature (300°C) synthesis of a SiOx (x = 0.38–1.55) thin film as a matrix for the NPs.The produced nanocomposite exhibits unexpected plasmonic properties,non-monotonically dependent on the matrix thickness,due to a porous columnar matrix structure grown from the NPs with variable oxygen content along the columns.This implies that low-temperature,gold-catalyzed oxidation of silicon occurs during the structure growth.Calculations based on Mie theory show that the refractive index of the obtained SiOx matrix can be as low as 1.2 at certain film thicknesses.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EF15_003%2F0000445" target="_blank" >EF15_003/0000445: Pokročilá příprava funkčních materiálů: Od mono k bi- a tri-chromatické excitaci s použitím tvarovaných laserových pulsů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Interfacial Phenomena and Heat Transfer

ISSN

2169-2785

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

75-85

Kód UT WoS článku

001087843900010

EID výsledku v databázi Scopus

2-s2.0-85174568598