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Chin. Phys. B, 2015, Vol. 24(2): 028104    DOI: 10.1088/1674-1056/24/2/028104

Influence of colloidal particle transfer on the quality of self-assembling colloidal photonic crystal under confined condition

Zhao Yong-Qiang (赵永强), Li Juan (李娟), Liu Qiu-Yan (刘秋艳), Dong Wen-Jun (董文钧), Chen Ben-Yong (陈本永), Li Chao-Rong (李超荣)
Department of Physics and Key Laboratory of ATMMT Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China
Abstract  The relationship between colloidal particle transfer and the quality of colloidal photonic crystal (CPC) is investigated by comparing colloidal particle self-assembling under the vertical channel (VC) and horizontal channel (HC) conditions. Both the theoretical analyses and the experimental measurements indicate that crystal quality depends on the stability of mass transfer. For the VC, colloidal particle transfer takes place in a stable laminar flow, which is conducive to forming high-quality crystal. In contrast, it happens in an unstable turbulent flow for the HC. Crystals with cracks and an uneven surface formed under the HC condition can be seen from the images of a field emission scanning electron microscope (SEM) and a three-dimensional (3D) laser scanning microscope (LSM), respectively.
Keywords:  colloidal particle transfer      colloidal photonic crystal      vertical channel      horizontal channel  
Received:  28 May 2014      Revised:  07 July 2014      Accepted manuscript online: 
PACS:  81.16.Dn (Self-assembly)  
  81.10.Dn (Growth from solutions)  
  47.15.-x (Laminar flows)  
  47.27.-i (Turbulent flows)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 91122022 and 51172209) and the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT), China (Grant No. IRT13097).
Corresponding Authors:  Li Chao-Rong     E-mail:

Cite this article: 

Zhao Yong-Qiang (赵永强), Li Juan (李娟), Liu Qiu-Yan (刘秋艳), Dong Wen-Jun (董文钧), Chen Ben-Yong (陈本永), Li Chao-Rong (李超荣) Influence of colloidal particle transfer on the quality of self-assembling colloidal photonic crystal under confined condition 2015 Chin. Phys. B 24 028104

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