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Published in: Journal of Sol-Gel Science and Technology 3/2022

31-05-2022 | Invited Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)

Ordered arrays of electrostatically assembled SiO2–SiO2 composite particles by electrophoresis-induced stimulation

Authors: Hiroyuki Muto, Takahito Amano, Wai Kian Tan, Atsushi Yokoi, Go Kawamura, Atsunori Matsuda

Published in: Journal of Sol-Gel Science and Technology | Issue 3/2022

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Abstract

Monodispersed silica (SiO2) nano- and microparticles can be fabricated by the sol-gel process. For device fabrication, precise formation of composite particles with a homogeneous and facile arrangement that form well-ordered, close-packed arrays is important. In this study, formation of electrostatically assembled SiO2–SiO2 composite particles with excellent homogeneity in arrangement was first demonstrated using sol-gel-derived monodispersed SiO2 particles with average particles sizes of 200 nm and 16 µm. Formation of two- and three-dimensionally, close-packed arrays by electrophoresis-induced stimulation with direct-current and alternating-current electric fields was achieved for the first time using these electrostatically assembled SiO2–SiO2 composite particles. Detailed morphological observation by scanning electron microscopy revealed that the structure of the SiO2–SiO2 composite particles remained intact even after electrophoretic stimulation. The feasibility of obtaining well-ordered arrays of electrostatically assembled sol–gel-derived SiO2–SiO2 composite particles is important for further development of sol-gel-related technology in various applications, such as advanced composites and optical devices.

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Appendix
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Metadata
Title
Ordered arrays of electrostatically assembled SiO2–SiO2 composite particles by electrophoresis-induced stimulation
Authors
Hiroyuki Muto
Takahito Amano
Wai Kian Tan
Atsushi Yokoi
Go Kawamura
Atsunori Matsuda
Publication date
31-05-2022
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 3/2022
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-022-05854-5

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