Determining the laser-induced release probability of a nanoparticle from a soft substrate.
Determining the laser-induced release probability of a nanoparticle from a soft substrate.
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DOI：
10.1364/ol.475174
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发表时间：
2022-12-01
期刊：
影响因子：
3.6
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中科院分区：
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这封信提出了一个研究激光诱导纳米粒子释放从软基板在空气中在不同的条件下。连续波（CW）激光加热纳米颗粒并引起基底的快速热膨胀，这产生了向上的动量，将其从基底释放出来。研究了在不同激光强度下，不同纳米粒子从不同基底上的释放概率。研究了基底表面性质和纳米粒子表面电荷对释放的影响。在这项工作中，纳米粒子释放的机制表明是不同的激光诱导的前向转移（LIFT）。由于这种技术的简单性和商业纳米颗粒的广泛可用性，这种纳米颗粒释放技术可能会在纳米颗粒表征和纳米制造中找到应用。
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 an upward momentum that releases it from the substrate. The releasing probability of different nanoparticles from different substrates under different laser intensities is studied. The effect of surface properties of substrates and surface charges of the nanoparticles on the release is also investigated. The mechanism of nanoparticle release demonstrated in this work is different from that of laser-induced forward transfer (LIFT). 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.