Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (4): 708.doi: 10.7503/cjcu20170690

• Physical Chemistry • Previous Articles     Next Articles

Fabrication of Monolayer Crystalline Films on Optical Fiber End by Micro-flow Injection Method

DENG Caisong, PAN Tingting, DU Lan, WANG Ming*(), NI Haibin, NI Xiaoqi   

  1. School of Physics and Technology, Jiangsu Key Laboratory on Opto-Electronic Technology, Nanjing Normal University,Nanjing 210023, China
  • Received:2017-11-03 Online:2018-04-10 Published:2018-03-26
  • Contact: WANG Ming E-mail:wangming@njnu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.61178044) and the Natural Science Foundation of Jiangsu Province, China(No.BK20161559)

Abstract:

A new method of preparing monolayer crystalline film on optical fiber end is proposed. Micro-flow injection method enables the formation of a well-organized monolayer of hexagonally arranged colloidal nanosphere arrays directly on the water surface, which is then transferred onto the preset fiber substrates, the area is up to square centimeters. The nanostructural morphology and optical properties of the samples were examined and analyzed by SEM and spectrum analyzer. It has been found that the colloidal crystal on the end face of optical fiber is hexagonally arranged. Transmission spectrum shows that the existence of photonic band gap, and the stopgap is located at 700 and 850 nm, which is coincide with simulation results of FDTD Solutions software. Combined with sputtering deposition, the silver spherical shell array structure was obtained, and its localized surface plasmon resonance(LSPR) was tested. Finally, the effect of solution concentration, meniscus formation and injection speed on the quality of micelle assembled colloidal film was discussed.

Key words: Colloidal crystal, Micro-flow injection, Bad gap, FDTD Solutions software, Polystyrene microspheres

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