In situ optical monitoring and effect of initial film temperature on pulsed laser-induced dewetting of ultrathin Ag films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638181" target="_blank" >RIV/68378271:_____/25:00638181 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10509982

Výsledek na webu

<a href="https://hdl.handle.net/11104/0368933" target="_blank" >https://hdl.handle.net/11104/0368933</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0272795" target="_blank" >10.1063/5.0272795</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In situ optical monitoring and effect of initial film temperature on pulsed laser-induced dewetting of ultrathin Ag films

Popis výsledku v původním jazyce

The dewetting conditions of ultrathin Ag films under pulsed laser annealing were investigated. Ag films with a nominal average thickness of 9 nm were deposited on fused silica substrates by DC magnetron sputtering and annealed using a KrF excimer laser (λ = 248 nm and pulse width = 5 ns). The annealing process was monitored in situ via spectrophotometric transmittance measurements over a wavelength range of 230–1000 nm, while the resulting microstructural changes were characterized by atomic force microscopy and scanning electron microscopy imaging. Depending on the laser energy density, the films underwent transitions from smooth surfaces to bi-continuous layers and eventually to well-separated nanoparticles. Experimental results were compared with numerical simulations based on a 1D heat transfer model, simulating the evolution of the film’s temperature during each laser pulse. The theoretical minimum laser energy density (40–43 mJ/cm2 at room temperature) required to initiate dewetting aligned closely with experimental observations. This study highlights the influence of initial film temperature, demonstrating that higher temperatures lower the energy density threshold for dewetting and vice versa.

Název v anglickém jazyce

In situ optical monitoring and effect of initial film temperature on pulsed laser-induced dewetting of ultrathin Ag films

Popis výsledku anglicky

The dewetting conditions of ultrathin Ag films under pulsed laser annealing were investigated. Ag films with a nominal average thickness of 9 nm were deposited on fused silica substrates by DC magnetron sputtering and annealed using a KrF excimer laser (λ = 248 nm and pulse width = 5 ns). The annealing process was monitored in situ via spectrophotometric transmittance measurements over a wavelength range of 230–1000 nm, while the resulting microstructural changes were characterized by atomic force microscopy and scanning electron microscopy imaging. Depending on the laser energy density, the films underwent transitions from smooth surfaces to bi-continuous layers and eventually to well-separated nanoparticles. Experimental results were compared with numerical simulations based on a 1D heat transfer model, simulating the evolution of the film’s temperature during each laser pulse. The theoretical minimum laser energy density (40–43 mJ/cm2 at room temperature) required to initiate dewetting aligned closely with experimental observations. This study highlights the influence of initial film temperature, demonstrating that higher temperatures lower the energy density threshold for dewetting and vice versa.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

1089-7550

Svazek periodika

138

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

055305

Kód UT WoS článku

001561861200001

EID výsledku v databázi Scopus

2-s2.0-105012559854