Abstract
Laser manipulation of a single microparticle in solution by photon pressure and its application for molecular assembling was reviewed. By focusing a cw-Nd:YAG laser under a microscope, invisible microparticles, swelled micelles, polymer chains were trapped leading to formation of a micrometer-sized particle. The characteristic of the formed particle was analyzed by fluorescence microspectroscopy. In the formed polymer particle, condensation of π-electronic chromophore was confirmed by dimer formation. Fusion of swelled micelles was proved by observing Förster type intermolecular energy transfer. Photothermal effect upon particle formation process in water was also investigated for temperature-sensitive intelligent polymers. Photon pressure provides novel micromanipulation and microfabrication tools and will open the new stage of chemistry.
