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Micromachines 2018, 9(3), 136;

Optofluidics Refractometers

State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, No. 10, Xitucheng Road, Haidian District, Beijing 100876, China
MicroNano System Research Center, College of Information and Computer Science, Taiyuan University of Technology, Taiyuan 030024, China
Key Laboratory of Advanced Transducers and Intelligent Control System, Shanxi Province and Ministry of Education, Taiyuan 030024, China
Author to whom correspondence should be addressed.
Received: 31 January 2018 / Revised: 2 March 2018 / Accepted: 16 March 2018 / Published: 20 March 2018
(This article belongs to the Special Issue Advances in Optofluidics)
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Refractometry is a classic analytical method in analytical chemistry and biosensing. By integrating advanced micro- and nano-optical systems with well-developed microfluidics technology, optofluidics are shown to be a powerful, smart and universal platform for refractive index sensing applications. This paper reviews recent work on optofluidic refractometers based on different sensing mechanisms and structures (e.g., photonic crystal/photonic crystal fibers, waveguides, whisper gallery modes and surface plasmon resonance), and traces the performance enhancement due to the synergistic integration of optics and microfluidics. A brief discussion of future trends in optofluidic refractometers, namely volume sensing and resolution enhancement, are also offered. View Full-Text
Keywords: refractometry; refractive index; microfluidics refractometry; refractive index; microfluidics

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Li, C.; Bai, G.; Zhang, Y.; Zhang, M.; Jian, A. Optofluidics Refractometers. Micromachines 2018, 9, 136.

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