Abstract
Fabricating functional submicrometer particles is difficult by conventional particle fabrication techniques
that use top-down or bottom-up approaches. Pulsed-laser melting in liquid is a versatile technique for
crystalline submicrometer spherical particles of various materials. Space-selective pulsed heating of
particles that are suspended in liquid by laser irradiation plays an important role in raising the particle
temperature over the melting point and quenching melt droplets for spherical particle formation. The
balance between high heat capacity at the larger particle side and low optical absorption at the smaller
particle side leads to the selective formation of submicrometer spherical particles. We demonstrate some
critical application examples of submicrometer spherical particles with both size-derived and bulk
functions by reducing the size to the submicrometer scale.
Key Words: Submicrometer, Particles, Melting, Liquid, Spheres
