Novel processing for improving monodispersity of ceramic spheres and colloidal crystallinity

Naoya Enomoto, Masayoshi Takata, Kai Kamada, Junichi Hojo, Hiroshi Fudouzi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We recently proposed that an aging of starting solutions for ceramic nanoparticles synthesis can be a factor to control the nucleation of the nanoparticles. Silica spheres are the most suitable material to learn the aging effect due to their ease to handle and their definite shape that can be measured accurately. The size and the uniformity (or, monodispersity) of silica spheres are essentially enhanced with aging time of several days. In this work, a series of colloidal crystal (opal) films were prepared from variously monodispersed silica spheres. The starting solutions (an ethanolic solution of tetraethylorthosilicate and that of ammonia water) were aged for a week or so, and then reacted. Besides the aging method, spheres with slightly different size were mixed into commercial spheres at different ratio to change the monodispersity. For efficient crystallization on substrate we used three methods, namely, natural drying, silicone oil-covered drying and dip-coating. Among these, silicone oil-covered drying and dip-coating processes showed similar high crystallinity, which we defined from the transmission spectrum of the film. Relationship between the monodispersity of spheres and the opal crystallinity was found to be in a single exponential curve for a variety of silica suspensions.

Original languageEnglish
Pages (from-to)662-666
Number of pages5
JournalScience and Technology of Advanced Materials
Volume7
Issue number7
DOIs
Publication statusPublished - Oct 1 2006

Fingerprint

Silicon Dioxide
Drying oils
Processing
Aging of materials
Silica
Silicone Oils
Drying
Silicones
Nanoparticles
Coatings
Crystallization
Ammonia
Suspensions
Nucleation
Crystals
Water
Substrates

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Novel processing for improving monodispersity of ceramic spheres and colloidal crystallinity. / Enomoto, Naoya; Takata, Masayoshi; Kamada, Kai; Hojo, Junichi; Fudouzi, Hiroshi.

In: Science and Technology of Advanced Materials, Vol. 7, No. 7, 01.10.2006, p. 662-666.

Research output: Contribution to journalArticle

Enomoto, Naoya ; Takata, Masayoshi ; Kamada, Kai ; Hojo, Junichi ; Fudouzi, Hiroshi. / Novel processing for improving monodispersity of ceramic spheres and colloidal crystallinity. In: Science and Technology of Advanced Materials. 2006 ; Vol. 7, No. 7. pp. 662-666.
@article{9ecb496e99f84c6e82b54b6fde02647d,
title = "Novel processing for improving monodispersity of ceramic spheres and colloidal crystallinity",
abstract = "We recently proposed that an aging of starting solutions for ceramic nanoparticles synthesis can be a factor to control the nucleation of the nanoparticles. Silica spheres are the most suitable material to learn the aging effect due to their ease to handle and their definite shape that can be measured accurately. The size and the uniformity (or, monodispersity) of silica spheres are essentially enhanced with aging time of several days. In this work, a series of colloidal crystal (opal) films were prepared from variously monodispersed silica spheres. The starting solutions (an ethanolic solution of tetraethylorthosilicate and that of ammonia water) were aged for a week or so, and then reacted. Besides the aging method, spheres with slightly different size were mixed into commercial spheres at different ratio to change the monodispersity. For efficient crystallization on substrate we used three methods, namely, natural drying, silicone oil-covered drying and dip-coating. Among these, silicone oil-covered drying and dip-coating processes showed similar high crystallinity, which we defined from the transmission spectrum of the film. Relationship between the monodispersity of spheres and the opal crystallinity was found to be in a single exponential curve for a variety of silica suspensions.",
author = "Naoya Enomoto and Masayoshi Takata and Kai Kamada and Junichi Hojo and Hiroshi Fudouzi",
year = "2006",
month = "10",
day = "1",
doi = "10.1016/j.stam.2006.05.012",
language = "English",
volume = "7",
pages = "662--666",
journal = "Science and Technology of Advanced Materials",
issn = "1468-6996",
publisher = "IOP Publishing Ltd.",
number = "7",

}

TY - JOUR

T1 - Novel processing for improving monodispersity of ceramic spheres and colloidal crystallinity

AU - Enomoto, Naoya

AU - Takata, Masayoshi

AU - Kamada, Kai

AU - Hojo, Junichi

AU - Fudouzi, Hiroshi

PY - 2006/10/1

Y1 - 2006/10/1

N2 - We recently proposed that an aging of starting solutions for ceramic nanoparticles synthesis can be a factor to control the nucleation of the nanoparticles. Silica spheres are the most suitable material to learn the aging effect due to their ease to handle and their definite shape that can be measured accurately. The size and the uniformity (or, monodispersity) of silica spheres are essentially enhanced with aging time of several days. In this work, a series of colloidal crystal (opal) films were prepared from variously monodispersed silica spheres. The starting solutions (an ethanolic solution of tetraethylorthosilicate and that of ammonia water) were aged for a week or so, and then reacted. Besides the aging method, spheres with slightly different size were mixed into commercial spheres at different ratio to change the monodispersity. For efficient crystallization on substrate we used three methods, namely, natural drying, silicone oil-covered drying and dip-coating. Among these, silicone oil-covered drying and dip-coating processes showed similar high crystallinity, which we defined from the transmission spectrum of the film. Relationship between the monodispersity of spheres and the opal crystallinity was found to be in a single exponential curve for a variety of silica suspensions.

AB - We recently proposed that an aging of starting solutions for ceramic nanoparticles synthesis can be a factor to control the nucleation of the nanoparticles. Silica spheres are the most suitable material to learn the aging effect due to their ease to handle and their definite shape that can be measured accurately. The size and the uniformity (or, monodispersity) of silica spheres are essentially enhanced with aging time of several days. In this work, a series of colloidal crystal (opal) films were prepared from variously monodispersed silica spheres. The starting solutions (an ethanolic solution of tetraethylorthosilicate and that of ammonia water) were aged for a week or so, and then reacted. Besides the aging method, spheres with slightly different size were mixed into commercial spheres at different ratio to change the monodispersity. For efficient crystallization on substrate we used three methods, namely, natural drying, silicone oil-covered drying and dip-coating. Among these, silicone oil-covered drying and dip-coating processes showed similar high crystallinity, which we defined from the transmission spectrum of the film. Relationship between the monodispersity of spheres and the opal crystallinity was found to be in a single exponential curve for a variety of silica suspensions.

UR - http://www.scopus.com/inward/record.url?scp=37849188625&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37849188625&partnerID=8YFLogxK

U2 - 10.1016/j.stam.2006.05.012

DO - 10.1016/j.stam.2006.05.012

M3 - Article

VL - 7

SP - 662

EP - 666

JO - Science and Technology of Advanced Materials

JF - Science and Technology of Advanced Materials

SN - 1468-6996

IS - 7

ER -