抄録
We developed a new fabrication technique for submicrometer spherical particles by pulsed laser melting
in liquid. In this technique, nanosecond pulsed laser irradiation at relatively low fl uence to nanoparticles
dispersed in liquid induces particle melting to form droplets, resulting in spherical particle formation by
quenching. This process produces submicrometer spherical particles of various materials, such as
metals, oxides, and semiconductors. We demonstrated a few examples of spherical particle fabrication
by this method and discussed the formation mechanism through the simple particle heating/melting
mechanism, which is basically different from the mechanism in the conventional pulsed laser ablation in
liquid.
