Preparation of spherical particles by vibrating orifice technique

被引：10

作者：

Shibata, S ^{[1
]}

Tomizawa, A ^{[1
]}

Yoshikawa, H ^{[1
]}

Yano, T ^{[1
]}

Yamane, M ^{[1
]}

机构：

[1] Tokyo Inst Technol, Meguro Ku, Tokyo 1528550, Japan

来源：

SOL-GEL OPTICS V | 2000年 / 3943卷

关键词：

spherical cavity; organic-inorganic hybrid matrix; hydrophilic-hydrophobic property; dye-doped spherical particles; vibrating orifice technique; laser emission;

D O I：

10.1117/12.384328

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 is consist 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 (PTES oligomer and R6G diluted with alcohol) passing through the orifice of 10 and 20 mu m 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 good shaped particles, control of molecular weight of PTES oligomer was essential. R6G-doped hybrid spherical particles of 4 similar to 10 mu m size of cavity structure were successfully obtained. The spherical particles were pumped by a second harmonic pulse of Q-switched Nd-YAG laser (532 nm wavelength) and laser emission peaks were observed at wavelengths which correspond to the resonance modes.

引用

页码：112 / 119

页数：8

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