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9LD-I-21
LASER DIAGNOSTICS AND SPECTROSCOPY
Hybrid metal-semiconductor nanoparticles produced by laser ablation in liquid for optical nano-sensing, anti-counterfeiting and photothermal
conversion
A. Kuchmizhak3, S. Gurbatov12, V. Puzikov2,
1-Far Eastern Federal University, Vladivostok 690061, Russia 2- Institute of Automation and Control Processes, Far Eastern Branch of RAS, Vladivostok 690061, Russia
alex.iacp.dvo@mail.ru
Recent progress in hybrid nanomaterials composed of dissimilar constituents permitted to improve performance and functionality of novel devices developed for optoelectronics, catalysis, medical diagnostic and sensing. However, the rational combination of such contrasting materials as noble metals and semiconductors within individual hybrid nano-structures by a ready-to-use and lithography-free fabrication approach is still a standing challenge.
Fig. 1. (a) SEM image of the LAL-synthesized Au@Si nanoparticles. (b) TEM image and EDX elemental mapping of the isolated Au@Si nanoparticle. (c) 3D model of an isolated Au-Si MS reconstructed from a series of 50 cross-sectional focused ion-beam cuts. Several representative cuts are shown as insets. Au nanoparticles on the surface o a Au-Si MS are highlighted by green color to distinguish them from Au material (orange) mixed with Si within the particle.
In our recent works, we used nanosecond-laser ablation of the semiconductor nanoparticle suspensions and bulk targets in functionalizing solutions containing precursor noble metal salts for generation of novel metal-semiconductor (Au@Si, Ag@Si, Au@TiO2) nanoparticles exhibiting unique morphology and optical properties. Generated nanomaterials were proved their usefulness for realization of SERS-based optical nanosensors for identification of molecular species at trace concentrations, anti-counterfeit labels based on physically unclonable function approach as well as solar steam generator that permits to increase the water evaporation rate by 2.5 times compared with that of pure water under identical 1 sun irradiation conditions [1-3].
[1] S. Gurbatov, V. Puzikov, A. Cherepakhin, E. Mitsai, N. Tarasenka, A. Shevlyagin, A. Sergeev, S.A. Kulinich, A. A Kuchmizhak, Hybrid Au@ Si microspheres produced via laser irradiation in liquid for nonlinear photonics, Optics & Laser Technology 147, 107666 (2022)
[2] S. Gurbatov, V. Puzikov, D. Storozhenko, E. Modin, E. Mitsai, A. Cherepakhin, A. Shevlyagin, A.V. Gerasimenko, S.A. Kulinich, A. Kuchmizhak, Hybrid Au-Si microspheres produced by laser ablation in liquid (LAL) for temperature-feedback optical nano-sensing and anti-counterfeit labeling, ACS Applied Materials & Interfaces (under review) arXiv preprint arXiv:2204.05124.
[3] S.O. Gurbatov, E. Modin, V. Puzikov, P. Tonkaev, D. Storozhenko, A. Sergeev, N. Mintcheva, S. Yamaguchi, N.N. Tarasenka, A. Chuvilin, S. Makarov, S.A. Kulinich, A. A Kuchmizhak, Black Au-Decorated TiO2 Produced via Laser Ablation in Liquid, ACS Applied Materials & Interfaces, vol. 13, 6522-6531, (2021).
ALT'22
