Abstract
Gold nanoparticles precipitated in transparent glass-ceramics could pave the way for the development of multifunctional materials that are in demand in modern photonics and optics. In this work, we explored the effect of gold nanoparticles on the crystallization, microstructure, and optical properties of ZnO-MgO-Al2O3-SiO2 glass containing TiO2 and ZrO2 as nucleating agents. X-ray diffraction, transmission electron microscopy, Raman, and optical spectroscopy were used for the study. We showed that gold nanoparticles have no effect on the formation of gahnite nanocrystals during the glass heat treatments, while optical properties of the glass-ceramics are strongly dependent on the gold addition. A computational model was developed to predict optical properties of glass during the crystallization, and the possibility for adjusting the localized surface plasmon resonance band position with the heat treatment temperature was shown.
Highlights
Research and development in the field of new optical materials are becoming especially important today, in an era of challenges in the field of photonics and integrated optics [1].In addition to optical materials based on glasses, crystals, and polymers, transparent glassceramics, which combine the properties of various materials, are beginning to play an increasingly important role in optical materials science [2,3]
The present study aims to explore the effect of gold NPs on the crystallization, microstructure, and optical properties of the mentioned glass system
The differential scanning calorimetry (DSC) curves for the two glass samples under study are similar, showing the glass transition temperature, Tg, is about 740 ◦ C for both glasses, as well as the temperature of the crystallization TC about 872 ◦ C (Figure 1a)
Summary
In addition to optical materials based on glasses, crystals, and polymers, transparent glassceramics, which combine the properties of various materials, are beginning to play an increasingly important role in optical materials science [2,3]. The phases formed in glass-ceramics can be oxide and non-oxide crystallites, metal nanoparticles (NPs), clusters, or semiconductor quantum dots [4]. The precipitation of different crystallites in transparent glass-ceramics is being actively studied to develop new light-emitting and laser media [5,6,7], materials with controlled values of the thermal expansion coefficient [8], and high-strength transparent cover materials [9,10,11]. Glass-ceramics based on metal NPs (mainly silver or gold) are in great demand as new nonlinear optical and plasmonic materials [12,13,14,15,16].
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