Abstract
We investigated a new fabrication technique for spherical particles by pulsed laser melting in liquid. In
this technique, nanoparticles dispersed in liquid were melted by nanosecond pulsed laser irradiation with
adequate fl uences, and the formed droplets became spherical particles after cooling. We investigated the
infl uences of laser wavelength, fl uence, and dispersion medium on the obtained particles by irradiating
the laser on titanium dioxide nanoparticles dispersed in ethanol and deionized water. We confirmed
nanometer-sized sphere formation with submicrometer spheres by laser irradiation at relatively high
laser fl uence.
