Fabrication of robust, high-quality two-dimensional colloidal crystals from aqueous suspensions containing water-soluble polymer

Mun Ho Kim; Hong Kyoon Choi; O. Ok Park; Sang Hyuk Im

doi:10.1063/1.2192626

Fabrication of robust, high-quality two-dimensional colloidal crystals from aqueous suspensions containing water-soluble polymer

Mun Ho Kim, Hong Kyoon Choi, O. Ok Park, Sang Hyuk Im

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

33 Citations (Scopus)

Abstract

In this letter, we report that two-dimensional (2D) polystyrene colloidal crystals of much higher quality can be fabricated in a single-step confined convective assembly process by introducing water-soluble polymer into the colloidal suspension. The presence of the water-soluble polymer in the aqueous phase enables the colloidal particles to arrange into more hexagonally close-packed single crystalline domains, and thus reduces the defect density. In addition, the physical stability of the final 2D colloidal crystals is improved because each particle is bonded to neighboring particles and to the substrate by polymer bridges.

Original language	English
Article number	143127
Journal	Applied Physics Letters
Volume	88
Issue number	14
DOIs	https://doi.org/10.1063/1.2192626
Publication status	Published - 2006 Apr 3
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2192626

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abstract = "In this letter, we report that two-dimensional (2D) polystyrene colloidal crystals of much higher quality can be fabricated in a single-step confined convective assembly process by introducing water-soluble polymer into the colloidal suspension. The presence of the water-soluble polymer in the aqueous phase enables the colloidal particles to arrange into more hexagonally close-packed single crystalline domains, and thus reduces the defect density. In addition, the physical stability of the final 2D colloidal crystals is improved because each particle is bonded to neighboring particles and to the substrate by polymer bridges.",

author = "Kim, {Mun Ho} and Choi, {Hong Kyoon} and Park, {O. Ok} and Im, {Sang Hyuk}",

note = "Funding Information: The authors are grateful to the Center for Advanced Functional Polymers, which is supported by KOSEF. This work was partially supported by the Brain Korea 21 Project of the Korean Ministry of Education and Human Resources.",

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AU - Kim, Mun Ho

AU - Choi, Hong Kyoon

AU - Park, O. Ok

AU - Im, Sang Hyuk

N1 - Funding Information: The authors are grateful to the Center for Advanced Functional Polymers, which is supported by KOSEF. This work was partially supported by the Brain Korea 21 Project of the Korean Ministry of Education and Human Resources.

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N2 - In this letter, we report that two-dimensional (2D) polystyrene colloidal crystals of much higher quality can be fabricated in a single-step confined convective assembly process by introducing water-soluble polymer into the colloidal suspension. The presence of the water-soluble polymer in the aqueous phase enables the colloidal particles to arrange into more hexagonally close-packed single crystalline domains, and thus reduces the defect density. In addition, the physical stability of the final 2D colloidal crystals is improved because each particle is bonded to neighboring particles and to the substrate by polymer bridges.

AB - In this letter, we report that two-dimensional (2D) polystyrene colloidal crystals of much higher quality can be fabricated in a single-step confined convective assembly process by introducing water-soluble polymer into the colloidal suspension. The presence of the water-soluble polymer in the aqueous phase enables the colloidal particles to arrange into more hexagonally close-packed single crystalline domains, and thus reduces the defect density. In addition, the physical stability of the final 2D colloidal crystals is improved because each particle is bonded to neighboring particles and to the substrate by polymer bridges.

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ER -

Fabrication of robust, high-quality two-dimensional colloidal crystals from aqueous suspensions containing water-soluble polymer

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