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Micromachines 2018, 9(3), 136; https://doi.org/10.3390/mi9030136

Optofluidics Refractometers

1
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, No. 10, Xitucheng Road, Haidian District, Beijing 100876, China
2
MicroNano System Research Center, College of Information and Computer Science, Taiyuan University of Technology, Taiyuan 030024, China
3
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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Abstract

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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