Probing Optical Nonlinearities of Unconventional Glass Nanocomposites Made of Ionic Liquid Crystals and Bimetallic Nanoparticles.

Autor: Rudenko V; Institute of Physics of National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine., Tolochko A; Institute of Physics of National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine., Bugaychuk S; Institute of Physics of National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine., Zhulai D; Institute of Physics of National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine., Klimusheva G; Institute of Physics of National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine., Yaremchuk G; V.I. Vernadsky Institute of General and Inorganic Chemistry of National Academy of Sciences of Ukraine, 03142 Kyiv, Ukraine., Mirnaya T; V.I. Vernadsky Institute of General and Inorganic Chemistry of National Academy of Sciences of Ukraine, 03142 Kyiv, Ukraine., Garbovskiy Y; Department of Physics and Engineering Physics, Central Connecticut State University, New Britain, CT 06050, USA.
Jazyk: angličtina
Zdroj: Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2022 Mar 11; Vol. 12 (6). Date of Electronic Publication: 2022 Mar 11.
DOI: 10.3390/nano12060924
Abstrakt: In this paper, we report the synthesis and characterization of unconventional nanocomposites made of bimetallic nanoparticles dispersed in a liquid crystal glass. Core-shell bimetallic nanoparticles (Ag/Au or Au/Ag) and Ag-Au bimetallic nanoalloys are synthesized using cadmium alkanoate glass-forming liquid crystals as nanoreactors. Optical spectra of the produced glassy nanocomposites exhibit a distinctive absorption peak due to a surface plasmon resonance. In addition, these unusual materials demonstrate a strong nonlinear-optical response probed by means of the Z-scan technique. The use of near-infrared (1064 nm) and visible (532 nm) nanosecond laser pulses reveal a variety of nonlinear-optical mechanisms that depend on the composition of the studied nanocomposites. Our results indicate that metal alkanoate-based glass-forming ionic liquid crystals with embedded plasmonic nanoparticles are promising, yet they are overlooked photonic nanomaterials suitable for optical and nonlinear-optical applications.
Databáze: MEDLINE
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