A droplet-based, optofluidic device for high-throughput, quantitative bioanalysis.
A droplet-based, optofluidic device for high-throughput, quantitative bioanalysis.
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DOI:
10.1021/ac302623z
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发表时间:
2012-12-18
影响因子:
7.4
通讯作者:
Huang, Tony Jun
中科院分区:
文献类型:
--
作者:
Guo, Feng;Lapsley, Michael Ian;Nawaz, Ahmad Ahsan;Zhao, Yanhui;Lin, Sz-Chin Steven;Chen, Yuchao;Yang, Shikuan;Zhao, Xing-Zhong;Huang, Tony Jun
Analysis of chemical or biomolecular contents in a tiny amount of specimen presents a significant challenge in many biochemical studies and diagnostic applications. In this work, we present a single-layer, optofluidic device for real-time, high-throughput, quantitative analysis of droplet contents. Our device integrates an optical fiber-based, on-chip detection unit with a droplet-based microfluidic unit. It can quantitatively analyze the contents of individual droplets in real-time. It also achieves a detection throughput of 2000 droplets per second, a detection limit of 20 nM, and an excellent reproducibility in its detection results. In a proof-of-concept study, we demonstrate that our device can be used to perform detection of DNA and its mutations by monitoring the fluorescent signal changes of the target DNA/molecular beacon complex in single droplets. Our approach can be immediately extended to a real-time, high-throughput detection of other biomolecules (such as proteins and viruses) in droplets. With its advantages in throughput, functionality, cost, size, and reliability, the droplet-based optofluidic device presented here can be a valuable tool for many medical diagnostic applications.
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