Experimental Setup for Laser Ablation Synthesis of Nanoparticles
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| Year of publication | 2023 |
| Type | Conference abstract |
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| Description | The increasing use of nanoparticles (NPs) requires the development of a new method for their preparation. One of these options is to prepare NPs by laser ablation synthesis (LAS). LAS is based on the ablation of the target, which is placed in different environments, either in liquid or ambient gas. The most common laser for these syntheses is neodymium-doped yttrium aluminum garnet (Nd:YAG). LAS synthesis in a liquid environment is usually performed in organic solvents (e.g. ethanol or acetone). The setup was constructed to respect the maximum use of commercially available components and flexibility. The main issue was developing a setup enabling synthesis in gas or liquid environments with lasers operating at different wavelengths. In the case of LAS in liquid, a preparation is provided at 1064 nm, 10 Hz. On the other hand, the synthesis in an ambient gas environment (helium or argon) can be provided at 266 nm, 10 Hz. This wavelength cannot be used for LAS in liquid due to the absorption by liquid. This preparation is placed in the ablation chamber and then trapped in an organic solvent (e.g. acetone). The reason for this trapping is for easier manipulation and to prevent the release of toxic NPs into the atmosphere. The main issue for developing a preparation method is the preparation of fresh NPs due to their rapid aggregation. |
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