中国物理B ›› 2015, Vol. 24 ›› Issue (7): 77803-077803.doi: 10.1088/1674-1056/24/7/077803

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Real-time quantitative optical method to study temperature dependence of crack propagation process in colloidal photonic crystal film

林冬风a b, 徐余颛a b, 石将建a b, 张瑜a b, 罗艳红a b, 李冬梅a b, 孟庆波a b   

  1. a Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing 100190, China;
    b Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2015-03-25 修回日期:2015-04-16 出版日期:2015-07-05 发布日期:2015-07-05
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant Nos. 2012CB932903 and 2012CB932904) and the National Natural Science Foundation of China (Grant Nos. 51372270, 11474333, and 21173260).

Real-time quantitative optical method to study temperature dependence of crack propagation process in colloidal photonic crystal film

Lin Dong-Feng (林冬风)a b, Xu Yu-Zhuan (徐余颛)a b, Shi Jiang-Jian (石将建)a b, Zhang Yu (张瑜)a b, Luo Yan-Hong (罗艳红)a b, Li Dong-Mei (李冬梅)a b, Meng Qing-Bo (孟庆波)a b   

  1. a Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing 100190, China;
    b Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2015-03-25 Revised:2015-04-16 Online:2015-07-05 Published:2015-07-05
  • Contact: Li Dong-Mei, Meng Qing-Bo E-mail:dmli@iphy.ac.cn;qbmeng@iphy.ac.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant Nos. 2012CB932903 and 2012CB932904) and the National Natural Science Foundation of China (Grant Nos. 51372270, 11474333, and 21173260).

摘要:

A real-time quantitative optical method to characterize crack propagation in colloidal photonic crystal film (CPCF) is developed based on particle deformation models and previous real-time crack observations. The crack propagation process and temperature dependence of the crack propagation rate in CPCF are investigated. By this method, the crack propagation rate is found to slow down gradually to zero when cracks become more numerous and dense. Meanwhile, with the temperature increasing, the crack propagation rate constant decreases. The negative temperature dependence of the crack propagation rate is due to the increase of van der Waals attraction, which finally results in the decrease of resultant force. The findings provide new insight into the crack propagation process in CPCF.

关键词: colloidal photonic crystal, crack propagation, temperature, real-time quantitative optical method

Abstract:

A real-time quantitative optical method to characterize crack propagation in colloidal photonic crystal film (CPCF) is developed based on particle deformation models and previous real-time crack observations. The crack propagation process and temperature dependence of the crack propagation rate in CPCF are investigated. By this method, the crack propagation rate is found to slow down gradually to zero when cracks become more numerous and dense. Meanwhile, with the temperature increasing, the crack propagation rate constant decreases. The negative temperature dependence of the crack propagation rate is due to the increase of van der Waals attraction, which finally results in the decrease of resultant force. The findings provide new insight into the crack propagation process in CPCF.

Key words: colloidal photonic crystal, crack propagation, temperature, real-time quantitative optical method

中图分类号:  (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)

  • 78.67.-n
62.20.mt (Cracks)