Laser-mediated Synthesis of Metal Nanoparticles by Optical Vortex Beam
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F25%3A00012874" target="_blank" >RIV/46747885:24220/25:00012874 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24620/25:00012874
Result on the web
<a href="https://www.confer.cz/nanocon/2024/read/5030-laser-mediated-synthesis-of-metal-nanoparticles-by-optical-vortex-beam.pdf" target="_blank" >https://www.confer.cz/nanocon/2024/read/5030-laser-mediated-synthesis-of-metal-nanoparticles-by-optical-vortex-beam.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Laser-mediated Synthesis of Metal Nanoparticles by Optical Vortex Beam
Original language description
Controlling nanoparticles (NPs) morphology in laser-mediated synthesis remains a significant challenge. This study introduces an innovative approach for synthesizing metal NPs using an Optical Vortex Beam (OVB) instead of the conventional Gaussian Beam (GB) in femtosecond laser ablation in liquids (fs-LAL). The primary objective is to achieve NPs shape modification through an environmentally friendly method, eliminating the need for chemical reagents and producing ligand-free NPs suitable for catalytic and biomedical applications. The transformation from GB to OVB was accomplished using a series of waveplates that first converted the linearly polarized GB to a circularly polarized beam and subsequently to a spiral phase wavefront beam, known as OVB. A key innovation of this study is the design of a 3D-printed ablation cell, which generates a thin liquid layer and ensures continuous liquid flow over the metal target, optimizing the laser-ablation setup. This optimization not only enhances productivity but also significantly reduces operation time. Results indicate that using OVB provides superior control over NPs morphology compared to GB, resulting in NPs with improved optical properties, as confirmed by Scanning Transmission Electron Microscopy (STEM) and UV-Vis spectroscopy. This approach holds potential for nanocatalysis, offering a cleaner and more efficient method for NPs synthesis.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů