Preparation of spherical particles by vibrating orifice technique

Shuichi Shibata; Atsushi Tomizawa; Hidemi Yoshikawa; Tetsuji Yano; Masayuki Yamane

doi:10.1117/12.384328

2 May 2000 Preparation of spherical particles by vibrating orifice technique

Shuichi Shibata, Atsushi Tomizawa, Hidemi Yoshikawa, Tetsuji Yano, Masayuki Yamane

Proceedings Volume 3943, Sol-Gel Optics V; (2000) https://doi.org/10.1117/12.384328
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

Preparation of micrometer-sized spherical particles containing Rhodamine 6G (R6G) has been investigated for the spherical cavity micro-laser. Using phenyl triethoxy silane (PTES) as a starting material, R6G-doped monodisperse spherical particles were prepared by the vibrating orifice technique. Processing consists of two major processes: (1) Hydrolysis and polymerization of PTES and (2) Droplet formation from PTES oligomers by vibrating orifice technique. A cylindrical liquid jet passing through the orifice of 10 and 20 micrometers in diameter breaks up into equal- sized droplets by mechanical vibration. Alcohol solvent of these droplets was evaporated during flying with carrier gas and subsequently solidified in ammonium water trap. For making smooth surface and god shaped particles, control of molecular weight of PTES oligomer was essential. R6G-doped hybrid spherical particles of 4 to 10 micrometers size of cavity structure were successfully obtained. The spherical particles were pumped by a second harmonic pulse of Q- switched Nd:YAG laser and laser emission peaks were observed at wavelengths which correspond to the resonance modes.

Citation Download Citation

Shuichi Shibata, Atsushi Tomizawa, Hidemi Yoshikawa, Tetsuji Yano, and Masayuki Yamane "Preparation of spherical particles by vibrating orifice technique", Proc. SPIE 3943, Sol-Gel Optics V, (2 May 2000); https://doi.org/10.1117/12.384328

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