ИСТИНА

Nanostructured semiconductors, plasmonic metals and semiconductor/metal nanocomposites have been extensively studied for numerous applications in photonics, sensorics and biomedicine. Semiconductor nanostructures from silicon (Si) are especially interesting for biomedical purposes because they are biocompatible, biodegradable and can be easily prepared by electrochemical and laser-plasma assisted methods [1,2]. For example, nanocrystalline Si nanoparticles (NPs) and nanowires exhibit efficient photoluminescence, Raman scattering and optical nonlinearities, which can be used for bioimaging by the means of linear and nonlinear optics [2,3]. It has been found that the optical properties of anisotropic Si nanostructures are controlled by mobile free charge carriers (electrons and holes) that opens up promising opportunities for the development of new optical switches and modulators for processing electromagnetic signals in silicon photonics [4]. Moreover, Si-NPs and nanocomposite Si/gold-NPs can act as efficient light absorbers in visible and near-infrared spectral regions that determines their high potential for photohyperthermia applications in biomedicine [5,6]. REFERENCES [1] V. Yu. Timoshenko, in “Handbook of Porous Silicon”, Ed. L. Canham, Springer, 2018, 1461-1469. [2] A. V. Kabashin and V. Yu. Timoshenko, Nanomedicine 11, 2247-2250 (2016). [3] A. Yu. Kharin et al., Adv. Opt. Mat. 7, 1801728 (2019). [4] Y. Deng, A. Ikonnikov, V. Yu. Timoshenko, Appl. Phys. A 130, 809 (2024). [5] V. A. Oleshchenko et al., Appl. Surf. Sci. 516, 145661 (2020). [6] A.V. Kondakova et al., Nanoscale (2025) https://doi.org/10.1039/D5NR03657G