Determining the laser-induced release probability of a nanoparticle from a soft substrate

Posted on 23.11.2022 - 22:00
This letter presents a study of laser-induced nanoparticle release from a soft substrate in air under different parameters. A continuous wave (CW) laser heats a nanoparticle and causes a rapid thermal expansion of the substrate, which gives the nanoparticle an upward momentum that releases it from the substrate. The releasing probability of different nanoparticles under different laser intensities is studied. The effect of the surface charges of the nanoparticles and the surface properties of the substrates on the nanoparticle release is also investigated. The nanoparticle release process studied in this letter is different from the laser-induced forward transfer (LIFT) technology that is commonly used to transfer nanoparticles where an expensive femtosecond laser is used. In contrast, a low-cost CW laser is used in this study. Due to the simplicity of this technology and the wide availability of commercial nanoparticles, this nanoparticle release technology may find applications in nanoparticle characterization and nanomanufacturing.

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Gao, Xuesong; Byram, Chandu; Adams, Jordan; Zhao, Chenglong (2022): Determining the laser-induced release probability of a nanoparticle from a soft substrate. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.6274815.v2
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Optics Letters

AUTHORS (4)

Xuesong Gao
Chandu Byram
Jordan Adams
Chenglong Zhao

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