Determine the releasing probability of laser-induced nanoparticles from a soft substrate

Determine the releasing probability of laser-induced nanoparticles from a soft substrate

    Presenter(s)

    Xuesong Gao

    Comments

    Presentation: 1:00-1:20 p.m., Science Center 150

    Description

    This letter presents a study of laser-induced nanoparticle release from a soft substrate in air under different conditions. 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 deformation of PMMA substrate, the releasing probability of different nanoparticles under different laser intensities are studied. The effect of the surface charges of the nanoparticles and the surface properties of the substrates on the nanoparticle release is also investigated. Finally, the nanoshells’ shape will be damaged during the transfer when the laser intensity is high. Compare to the laser induced forward transfer (LIFT), 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.

    Publication Date

    4-19-2023

    Project Designation

    Graduate Research

    Primary Advisor

    Chenglong Zhao

    Primary Advisor's Department

    Physics

    Keywords

    Stander Symposium, College of Arts and Sciences

    Institutional Learning Goals

    Scholarship

    Determine the releasing probability of laser-induced nanoparticles from a soft substrate

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