Preparation of higher-quality SiO2 opals using a new submicrospheres selection technique

Autor: Qunyan Li, Peigen Ni, Daozhong Zhang, Peng Dong, Xingcai Guo, Bingying Cheng
Rok vydání: 2003
Předmět:
Zdroj: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 216:123-128
ISSN: 0927-7757
DOI: 10.1016/s0927-7757(02)00543-5
Popis: Monodisperse colloidal SiO2 submicrospheres were prepared by hydrolysis and condensation of tetraethoxysilane. We measured various relative settle velocities of different aggregated submicrospheres and then developed a submicrospheres selection technique separating single spheres from aggregated spheres. Monodispersity Of SiO2 submicrospheres was improved by this submicrospheres selection technique. Higher-quality SiO2 opals were fabricated from selected submicrospheres., (C) 2002 Elsevier Science B.V. All rights reserved.
Databáze: OpenAIRE