中国物理B ›› 2005, Vol. 14 ›› Issue (8): 1581-1584.doi: 10.1088/1009-1963/14/8/019

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Self-assembling three-dimensional colloidal photonic crystal multilayers from aqueous ethanol mixture solutions

袁春伟1, 汪静2, 唐芳琼3   

  1. (1)Key Laboratory of Molecular and Biomolecular Electronics (Southeast University),Ministry of Education, Nanjing 210096, China; (2)Key Laboratory of Molecular and Biomolecular Electronics (Southeast University),Ministry of Education, Nanjing 210096, China;College of Science, Dalian Fisheries University, Dalian 116023, China; (3)Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China
  • 收稿日期:2004-09-27 修回日期:2005-03-14 出版日期:2005-07-13 发布日期:2005-07-13
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 69831010 and 60121101).

Self-assembling three-dimensional colloidal photonic crystal multilayers from aqueous ethanol mixture solutions

Wang Jing (汪静)ab, Yuan Chun-Wei (袁春伟)a, Tang Fang-Qiong (唐芳琼)c   

  1. a Key Laboratory of Molecular and Biomolecular Electronics (Southeast University), Ministry of Education, Nanjing 210096, China; b College of Science, Dalian Fisheries University, Dalian 116023, China; c Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2004-09-27 Revised:2005-03-14 Online:2005-07-13 Published:2005-07-13
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 69831010 and 60121101).

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摘要： Vertical deposition technique to fabricate thin film solid artificial opals is becoming widely used. In the present work, we report our research on solvent modification and its effect on the quality of colloidal crystals. We used aqueous ethanol mixture solution to replace the ethanol solution, and used the vertical deposition technique to pack the spherical colloids into close-packed arrays. High quality samples can be prepared with thickness up to 20μm in one step. Furthermore, large spheres (diameters greater than 500nm) were successfully crystallized. Scanning electron microscopy (SEM) and optical methods were used to measure sample thickness and uniformity. The number of layers was calculated from the spectral separation of the Fabry--Perot fringes.

关键词: colloid crystal multilayers, solvent modification, Fabry- Perot fringes, layer number

Abstract: Vertical deposition technique to fabricate thin film solid artificial opals is becoming widely used. In the present work, we report our research on solvent modification and its effect on the quality of colloidal crystals. We used aqueous ethanol mixture solution to replace the ethanol solution, and used the vertical deposition technique to pack the spherical colloids into close-packed arrays. High quality samples can be prepared with thickness up to 20μm in one step. Furthermore, large spheres (diameters greater than 500nm) were successfully crystallized. Scanning electron microscopy (SEM) and optical methods were used to measure sample thickness and uniformity. The number of layers was calculated from the spectral separation of the Fabry--Perot fringes.

Key words: colloid crystal multilayers, solvent modification, Fabry- Perot fringes, layer number

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
82.70.Dd (Colloids) 68.37.Hk (Scanning electron microscopy (SEM) (including EBIC)) 78.40.-q (Absorption and reflection spectra: visible and ultraviolet) 78.30.-j (Infrared and Raman spectra)