In Situ Visualization of Layer Transitions during Convective Self-Assembly in a Sessile Drop

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Convective self-assembly of colloidal spheres provides a simple method for fabricating two and three dimensional colloidal crystals. In this work, we investigated the layer transitions phenomena during colloidal self-assembly in a sessile drop by using an in-situ videoscopic set-up. The effects of surface charge, colloidal concentration, and surfactant additions were examined. The results show that the chemical environment plays an important role in colloidal self-assembly. In the case of ordered growth, different layer transition phenomena were observed when the colloidal concentration is different.

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Edited by:

S. J. CHUA, J. H. TENG, O. WADA, R. DE LA RUE and X. H. TANG

Pages:

117-119

Citation:

L. Gao et al., "In Situ Visualization of Layer Transitions during Convective Self-Assembly in a Sessile Drop", Advanced Materials Research, Vol. 31, pp. 117-119, 2008

Online since:

November 2007

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$38.00

[1] Y. Xia, B. Gates, Y. Yin and Y. Lu: Adv. Mater. Vol. 12 (2000), p.693.

[2] L. Meng, H. Wei, A. Nagel. B. J. Wiley, L. E. Scriven and D. J. Norris: Nano Letters Vol. 6 (2006), p.2249.

[3] S. E. Shim, Y. J. Cha, J. M. Byun and S. Choe: J. Appl. Polym. Sci. Vol. 71 (1999), p.2259.

[4] K. -U. Fulda, A. Kampes, L. Krasemann and B. Tieke: Thin Solid Films Vol. 327-329, p.752.

DOI: https://doi.org/10.1016/s0040-6090(98)00780-9

[5] N.D. Denkov, O.D. Velev, P. A. Kralcheveky, I. B. Ivanov, H. Yoshimura and K. Nagayama: Langmuir Vol. 8 (1992), p.3183.

[6] B. G. Prevo and O. D. Velev: Langumir Vol. 20 (2004), p.2099. (a) (b) (c).