Preferential self-assembly behavior of polydisperse silica particles under negative pressure

Yuxian Zhang; Maohua Quan; Weidong Zhao; Zhou Yang; Dong Wang; Hui Cao; Wanli He

doi:10.1016/j.colsurfa.2017.06.042

Preferential self-assembly behavior of polydisperse silica particles under negative pressure

Yuxian Zhang, Maohua Quan^*, Weidong Zhao, Zhou Yang, Dong Wang, Hui Cao, Wanli He

^*Corresponding author for this work

University of Science and Technology Beijing

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The research about assembly behavior of colloidal particles under external field is a key of improved self-assembly method. Although high quality photonic crystals prepared by improved self-assembly method under external field have been reported, real applications require monodisperse particles. Here, we designed negative pressure field to prepare opal film composed of polydisperse SiO₂ particles. The effect of different negative pressures on the opal's surface morphology and photonic band gap (PBG) properties was investigated. Under the optimal pressure, close-packed opal was obtained, which is composed of irregular and polydisperse silica particles. We attribute this to the balance between sedimentation of SiO₂ particles and solvent evaporation during the assembly process. Importantly, this approach could be complementary to the preparing of three-dimensional photonic crystals with long-range ordered structures in usual laboratory.

Original language	English
Pages (from-to)	832-839
Number of pages	8
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	529
DOIs	https://doi.org/10.1016/j.colsurfa.2017.06.042
Publication status	Published - 20 Sept 2017
Externally published	Yes

Keywords

3D photonic crystal
Negative pressure
Polydisperse
Self-assembly behavior

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10.1016/j.colsurfa.2017.06.042

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abstract = "The research about assembly behavior of colloidal particles under external field is a key of improved self-assembly method. Although high quality photonic crystals prepared by improved self-assembly method under external field have been reported, real applications require monodisperse particles. Here, we designed negative pressure field to prepare opal film composed of polydisperse SiO2 particles. The effect of different negative pressures on the opal's surface morphology and photonic band gap (PBG) properties was investigated. Under the optimal pressure, close-packed opal was obtained, which is composed of irregular and polydisperse silica particles. We attribute this to the balance between sedimentation of SiO2 particles and solvent evaporation during the assembly process. Importantly, this approach could be complementary to the preparing of three-dimensional photonic crystals with long-range ordered structures in usual laboratory.",

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T1 - Preferential self-assembly behavior of polydisperse silica particles under negative pressure

AU - Zhang, Yuxian

AU - Quan, Maohua

AU - Zhao, Weidong

AU - Yang, Zhou

AU - Wang, Dong

AU - Cao, Hui

AU - He, Wanli

PY - 2017/9/20

Y1 - 2017/9/20

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AB - The research about assembly behavior of colloidal particles under external field is a key of improved self-assembly method. Although high quality photonic crystals prepared by improved self-assembly method under external field have been reported, real applications require monodisperse particles. Here, we designed negative pressure field to prepare opal film composed of polydisperse SiO2 particles. The effect of different negative pressures on the opal's surface morphology and photonic band gap (PBG) properties was investigated. Under the optimal pressure, close-packed opal was obtained, which is composed of irregular and polydisperse silica particles. We attribute this to the balance between sedimentation of SiO2 particles and solvent evaporation during the assembly process. Importantly, this approach could be complementary to the preparing of three-dimensional photonic crystals with long-range ordered structures in usual laboratory.

KW - 3D photonic crystal

KW - Negative pressure

KW - Polydisperse

KW - Self-assembly behavior

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Preferential self-assembly behavior of polydisperse silica particles under negative pressure

Abstract

Keywords

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