Optoelectronics Letters

, Volume 15, Issue 6, pp 476–480 | Cite as

Fiber-coupler-based microfluidic system for trapping of DNA biomolecules

  • Ji-xuan Wu (吴继旋)
  • Qian Wang (王芊)
  • Bin-bin Song (宋彬彬)
  • Bo Liu (刘波)
  • Hao Zhang (张昊)
  • Cheng Zhang (张诚)
  • Shao-xiang Duan (段少祥)
  • Hua Bai (白华)Email author


A miniature fiber-coupler-based microfluidic system is proposed for trapping of DNA biomolecules. The loop-shaped fiber-coupler is fabricated by using flame tapering technique and integrated in a microfluidic channel. Probe-DNA immobilized on the fiber-coupler surface enables specific recognition of target DNA sequences and effectively facilitates the trapping of target DNA molecules. The binding characteristics of biomolecules on the fiber-coupler surface have been theoretically analyzed and experimentally demonstrated. Experimental results indicate that the spectral response of the loop-shaped fiber coupler immobilized with probe DNA exhibits a red-shift with the trapping of the DNA biomolecules. The proposed microfluidic system possesses such desirable merits as simple structure, label-free method and high integration, which make it a promising candidate for applications in molecular biology and related bioengineering areas.

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Copyright information

© Tianjin University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ji-xuan Wu (吴继旋)
    • 1
  • Qian Wang (王芊)
    • 1
  • Bin-bin Song (宋彬彬)
    • 2
  • Bo Liu (刘波)
    • 3
  • Hao Zhang (张昊)
    • 3
  • Cheng Zhang (张诚)
    • 1
  • Shao-xiang Duan (段少祥)
    • 3
  • Hua Bai (白华)
    • 1
    Email author
  1. 1.Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, Tianjin Key Laboratory of Engineering Technologies for Cell Phamaceutica, College of Electronic and Information EngineeringTianjin Polytechnic UniversityTianjinChina
  2. 2.Key Laboratory of Computer Vision and Systems, Ministry of Education, School of Computer Science and EngineeringTianjin University of TechnologyTianjinChina
  3. 3.Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, College of Electronic Information and Optical EngineeringNankai UniversityTianjinChina

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