[1] [1] Whitesides G M. The origins and the future of microfluidics［J］. Nature, 2006, 442(7101): 368-373.

[2] [2] Zhu Y, Fang Q. Integrated droplet analysis system with electrospray ionization-mass spectrometry using a hydrophilic tongue-based droplet extraction interface［J］. Analytical Chemistry, 2010, 82(19): 8361-8366.

[3] [3] Snyder L R, Kirkland J J, Glajch J L. Practical HPLC method development［M］. Hoboken: John Wiley & Sons, 2012.

[4] [4] McMillan N D, Finlayson O, Fortune F, et al. The fibre drop analyser: a new multianalyser analytical instrument with applications in sugar processing and for the analysis of pure liquids［J］. Measurement Science and Technology, 1992, 3(8): 746.

[5] [5] Wang C H, Augousti A T, Mason J, et al. The capacitive drop tensiometer - a novel multianalysing technique for measuring the properties of liquids［J］. Measurement Science and Technology, 1999, 10(1): 19.

[6] [6] Qiu Zurong, Zhang Guoxiong, Wang Chunhai, et al. Study on the technology of drop analysis［J］. Journal of Tianjin University (Science and Technology), 2001, 34(5): 587-590.

[7] [7] Song Q, Zhang G X, Qiu Z R, et al. Discrimination among different liquids based on correlation comparison between liquid drop fingerprints［J］. Instrumentation Science & Technology, 2005, 33(3): 339-354.

[8] [8] Chen Xiaolong, Luo Yunhan, Xu Mengyun, et al. Refractive index and temperature sensing based on surface plasmon resonance fabricated on a side-polished fiber［J］. Acta Optica Sinica, 2014, 34(2): 0206005.

[9] [9] Singh S. Diffraction method measures refractive indices of liquids［J］. Physics Education, 2004, 39(3): 235.

[10] [10] Liu Weijun, Rao Yunjiang, Ran Zengling, et al. Novel Fabry-Pffraction fiber-optic refractive-index sensor based on laser micromachining［J］. Acta Optica Sinica, 2008, 28(7): 1400-1404.

[11] [11] Xin Duqiang, Zhu Min, Xie Yanlei, et al. Several measuring methods of the refractive index of liquid［J］. College Physics, 2007, 26(1): 34-37.

[12] [12] Sun Weimin, Liu Qiang, Li Yingjuan, et al. Analysis of liquid samples of alcohol solutions etc. based on the fiber fingerprint drop trace［J］. Journal of Harbin Engineering University, 2006, 27(6): 931-934.

[13] [13] Qiu Zurong. Research on droplet analysis technology［D］. Tianjin: Tianjin University, 2000.

[14] [14] Feng Guohong, Qiu Zurong, Yan Jie, et al. Detection of salinity in water with fiber-capacitance droplet analysis technology［J］. Journal of Optoelectronics·Laser, 2013, 24(5): 975-981.

[15] [15] Bai Z S, Liu Z Q, Xu H U. An experienced formula about the connection of refraction index and consistence of several liquid［J］. Journal of Yan′an University, 2004, 23(1): 33-34.

[16] [16] Zhang Zhiwei, Yin Weifeng, Wen Tingdun, et al. Study on the relational expression of solution concentration and its refractive index［J］. Journal of North University of China (Natural Science Edition), 2009, 30(3): 281-285.

[17] [17] Harkins W D, Brown F E. The determination of surface tension (free surface energy), and the weight of falling drops: the surface tension of water and benzene by the capillary height method［J］. Journal of the American Chemical Society, 1919, 41(4): 499-524.

[18] [18] Chen Haixu, Zhang Guoxiong, Qiu Zurong. Image liquid drop analysis technology based on CCD［J］. Journal of Optoelectronics·Laser, 2006, 17(8): 1004-1008.

[19] [19] Ji Hongbing, Hu Yingru. Liquid droplet image processing and feature extraction［J］. Optical Instruments, 2010, 32(2): 34-38.

[20] [20] Carbery D, McMillan N D, O′Neill M, et al. Experimental observations with ultra-speed imaging revealing new complex detail of drop separation processes from a large diameter drophead［C］. Journal of Physics: Conference Series. IOP Publishing, 2011, 307(1): 012046.

[21] [21] Ma Peisheng. A brief guide to chemical property data［M］. Beijing: Chemical Industry Press, 2013.

[22] [22] Yang Yuping, Wang Nong. The measurement and analysis of several alcohol solution surface tension［J］. Guangdong Chemical Industry, 2010, 37(3): 180, 215.

[23] [23] Yuan Hui. The research on the influence factors of fiber-capacitive liquid drop fingerprint［D］. Beijing: Beijing University of Posts and Telecommunications, 2014.