A5045470601- Laser Material Processing Techniques
- Laser-Ablation Synthesis of Nanoparticles
- Gold and Silver Nanoparticles Synthesis and Applications
- Nonlinear Optical Materials Studies
- Laser-induced spectroscopy and plasma
- Photonic Crystals and Applications
- Silicon Nanostructures and Photoluminescence
- Advanced biosensing and bioanalysis techniques
- Photorefractive and Nonlinear Optics
- Photonic and Optical Devices
- Phase-change materials and chalcogenides
- Biosensors and Analytical Detection
- Advanced Semiconductor Detectors and Materials
- Silicon and Solar Cell Technologies
- Semiconductor materials and interfaces
- Nanocluster Synthesis and Applications
- Optical Coatings and Gratings
- Plasmonic and Surface Plasmon Research
Institute of Automation and Control Processes
2021-2024
Russian Academy of Sciences
2022-2023
Far Eastern Branch of the Russian Academy of Sciences
2021-2022
Far Eastern Federal University
2021
Strong light localization inside the nanoscale gaps provides remarkable opportunities for creation of various medical and biosensing platforms stimulating an active search inexpensive easily scalable fabrication at a sub-100 nm resolution. In this paper, self-organized laser-induced periodic surface structures (LIPSSs) with shortest ever reported periodicity 70 ± 10 were directly imprinted on crystalline Si wafer upon its direct femtosecond-laser ablation in isopropanol. Appearance such...
Abstract Upon systematic studies of femtosecond‐laser processing monocrystalline Si in oxidation‐preventing methanol, it is shown that the electromagnetic processes dominating at initial steps progressive morphology evolution define onset hydrodynamic and upon subsequent multi‐pulse exposure. Under promoted exposure quasi‐regular subwavelength laser‐induced periodic surface structures (LIPSSs) are justified to evolve through template‐assisted development Rayleigh‐Plateau instability molten...
Abstract Ultrashort laser pulses deliver electromagnetic energy to matter causing its localized heating that can be used for both material removal via ablation/evaporation and driving interface chemical reactions. Here, it is shown mentioned processes simultaneously combined within straightforward nanotexturing of Si wafer in a functionalizing solution produce practically relevant metal–semiconductor surface nano‐morphology. Such unique hybrid morphology represents deep‐subwavelength...
Here, we present the single-step laser-assisted fabrication of anti-reflective hierarchical surface textures on silicon locally functionalized with a photoluminescent (PL) molecular nanolayer. Using femtosecond-laser ablation commercial crystalline Si wafers placed under layer solution containing rhodamine 6G (R6G) triethoxysilyl derivative, fabricated ordered arrays microconical protrusions self-organized nanoscale morphology. At same time, laser-induced temperature increase facilitated...
Here, we show that direct femtosecond laser nanostructuring of monocrystalline Si wafers in aqueous solutions containing noble-metal precursors (such as palladium dichloride, potassium hexachloroplatinate, and silver nitrate) allows for the creation nanogratings decorated with mono- (Pd, Pt, Ag) bimetallic (Pd-Pt) nanoparticles (NPs). Multi-pulse femtosecond-laser exposure was found to drive periodically modulated ablation surface, while simultaneous thermal-induced reduction...
We study structural and morphological transformations caused by multipulse femtosecond-laser exposure of Bridgman-grown ϵ-phase GaSe crystals, a van der Waals semiconductor promising for nonlinear optics optoelectronics. unveil, the first time, laser-driven self-organization regimes in allowing formation regular laser-induced periodic surface structures (LIPSSs) that originate from interference incident radiation interface plasmon waves. LIPSSs causes transformation near-surface layer to...
Here, we report a novel, easy-to-implement scalable single-step procedure for the fabrication of solid-state surface-enhanced photoluminescence (SEPL) sensor via direct femtosecond (fs) laser patterning monocrystalline Si wafers placed under layer functionalizing solution simultaneously containing metal salt precursor (AgNO3) and photoluminescent probe (d114). Such processing creates periodically modulated micro- nanostructures decorated with Ag nanoparticles on surface, which effectively...
Ultrashort laser pulses allows to deliver electromagnetic energy matter causing its localized heating that can be used for both material removal via ablation/evaporation and drive interface chemical reactions. Here, we showed mentioned processes simultaneously combined within straightforward nanotexturing of Si wafer in functionalizing solution produce a practically relevant metal-semiconductor surface nano-morphology. Such unique hybrid morphology represent deep-subwavelength LIPSSs with...
Here, upon systematic studies of femtosecond-laser processing monocrystalline Si in oxidation-preventing methanol, we showed that the electromagnetic processes dominating at initial steps progressive morphology evolution define onset hydrodynamic and resulting subsequent multi-pulse exposure. In particular, under promoted exposure quasi-regular subwavelength laser-induced periodic surface structures (LIPSSs) were justified to evolve through template-assisted development Rayleigh-Plateau...
In this work, the effects of direct femtosecond laser nanostructuring on monocrystalline silicon (Si) wafer immersed in liquid environment were studied. Ultrashort exposure induced nonequilibrium states materials triggers morphology self- organization driven by excited electromagnetic and hydrodynamic processes, which ultimately give rise to formation regular nanogratings with different periodicity (Λ<sub>1</sub>=250 nm 300 nm, Λ<sub>2</sub>=70±10 nm) randomly arranged...