Rapid optical plasmonic transformation of silver-doped glass

Autor: Matthew Mancini, José A. Jiménez, Mariana Sendova
Rok vydání: 2021
Předmět:
Zdroj: Journal of Thermal Analysis and Calorimetry. 147:6161-6166
ISSN: 1588-2926
1388-6150
DOI: 10.1007/s10973-021-10967-0
Popis: A novel two-step method for rapid optical plasmonic transformation (ROPT) of Ag-doped phosphate glass is proposed. The ROPT process blends the time efficiency of a laser irradiation treatment with the precise temperature control over the entire glass volume. The time needed for optical transformation is reduced to 3 min, compared to 120 min during the conventional isothermal heat treatment (HT). The proposed method employs a differential scanning calorimeter (DSC) for nanoparticle (NP) synthesis. For consistent optical density comparison of the synthesized plasmonic glasses, a plasmonic merit factor, $$\zeta$$ , is introduced. The ROPT method exhibits a plasmonic factor growth rate three orders of magnitude higher, 0.14 $$\zeta$$ s−1, compared to the assessed rate of the conventional isothermal HT, 0.27 × 10–3 $$\zeta$$ s−1. The fast growth is discussed in the framework of sub-nanometer particle coalescence at temperatures 80–100 °C above the glass transition temperature of the glass nanocomposite. The proposed solid-state NP synthesis may be applied for various noble metal NPs in different types of glass matrices.
Databáze: OpenAIRE
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