高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (4): 708-713.doi: 10.7503/cjcu20170690

• 物理化学 • 上一篇    下一篇

采用微流注射法在光纤端面制备单层胶体微球薄膜

邓彩松, 潘庭婷, 杜澜, 王鸣(), 倪海彬, 倪小琦   

  1. 南京师范大学物理科学与技术学院, 江苏省光电技术重点实验室, 南京 210023
  • 收稿日期:2017-11-03 出版日期:2018-04-10 发布日期:2018-03-26
  • 作者简介:联系人简介: 王 鸣, 男, 博士, 教授, 博士生导师, 主要从事光电子技术与激光应用方面的研究. E-mail:wangming@njnu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 61178044)和江苏省自然科学基金(批准号: BK20161559)资助

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)

摘要:

提出了一种在光纤端面制备单层胶体晶体薄膜的新方法微流注射法, 利用针尖微量注射胶体微球溶液, 该方法可以在气/液界面直接形成大面积六角密排的周期纳米球阵列, 面积达到平方厘米级别, 再利用二维胶体单层膜的可转移性, 将薄膜转移至到光纤端面衬底上, 形成单层胶体微球有序薄膜. 采用扫描电子显微镜和光谱分析仪对样品形貌、 结构以及光学特性进行了表征和分析. 电子显微镜图像表明, 光纤端面的胶体晶体为六角密排阵列结构. 透射光谱表明, 该结构具有光子晶体的带隙特征, 带隙的中心波长约为700和850 nm, 与分析软件FDTD Solutions仿真结果相吻合. 结合溅射沉积方法, 得到了银纳米球壳阵列结构, 检验了其局域表面等离子体共振效应(LSPR). 对比讨论了溶液浓度、 弯月面的形成及注射速度等因素对微流组装胶体微球薄膜质量的影响.

关键词: 胶体晶体, 微流注射, 带隙, FDTD Solutions软件, 聚苯乙烯微球

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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