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Micro-capillary-based evanescent field biosensor for sensitive, label-free DNA detection
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发布时间: 2019-03-09
发布时间:2019-03-09
论文类型:期刊论文
发表时间:2015-08-10
发表刊物:OPTICS EXPRESS
收录刊物:Scopus、EI、SCIE
卷号:23
期号:16
页面范围:20686-20695
ISSN号:1094-4087
摘要:We proposed and demonstrated a micro-capillary-based, high-sensitivity evanescent field biosensor for the cost-effective, rapid, and sensitive analysis and detection of specific DNA sequences. By functionalizing the surface of the tubing wall with ssDNA probe sequences, label-free DNA detection is achieved. The wavelength shift response of the surface-functionalized biosensors to DNA hybridization is monitored in real time. Our experiments show that the biosensor can operate at room temperature and is capable of performing label-free hybridization detection, analyte concentration measurement and nucleotide mismatch detection through a single sensing device. The sensor has many advantages, such as a simple manufacturing process, standardized production control, reliable quality, low cost and an economic demodulator. The compact nature and miniature size of the biosensing detection system makes it a good candidate for the rapid and highly sensitive detection of low-concentration analytes in micro-samples for cost-effective, real-time, and on-site analysis in the fields of life science, pharmaceutical chemistry, medical science and criminal investigation. (C) 2015 Optical Society of America

刘云

副教授   博士生导师   硕士生导师

性别: 男

毕业院校:大连理工大学

学位: 博士

所在单位:物理学院

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