Controlled Generation of Solid Spheroidal Dielectric Microparticles

Abstract

Our recent research has been pioneering the generation of single solid particles with adjustable eccentricity. This new technique permits the production of particles in the range of 200 µm to 2 mm and an approximate eccentricity of 1:1.2 to 1:1.8 along an axis. Single droplets consisting of multiacrylate monomers were levitated by an ultrasonic levitator and were cured by UV illumination after adjusted eccentricity. For special applications we can produce particles that are attached to a stem (optical fiber), which allows a controlled orientation of the particle. One possible application for such particles is the investigation of light scattering on nonspherical particles.