4.6 Article

Lab-on-fiber sensing system based on responsive Fabry-Perot optical resonance cavities prepared through in situ construction strategy

Journal

NANOTECHNOLOGY
Volume 32, Issue 41, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ac121d

Keywords

lab-on-fiber; Fabry-Perot optical resonance cavity; polymer brush; metal-insulator-metal resonator; in situ construction strategy

Funding

  1. National Natural Science Foundation of China [22075039, 21805028, 21805029, 51905526]
  2. Fundamental Research Funds for the Central Universities [N180705004, N2005007, N2105010]
  3. China Postdoctoral Science Foundation [2020M670773]
  4. Open Project of State Key Laboratory of Supramolecular Structure and Materials [sklssm202104, sklssm2021023, sklssm2021035]
  5. Jiaxing Science and Technology Project [2020AY10018]

Ask authors/readers for more resources

A new method for preparing a lab-on-fiber sensing system using a responsive Fabry-Perot optical resonance cavity on optical fibers was reported. The system shows high sensitivity, excellent repeatability, and rapid response rate, making it suitable for applications in medical diagnosis, in vivo detection, and public security.
For decades, lab-on-fiber (LOF) sensing systems have become an emerging optical sensing platform due to the features of small size and light weight. Herein, a simple and efficient in situ construction strategy was reported for the preparation of LOF sensing platform based on the integration of responsive Fabry-Perot optical resonance cavity on optical fibers. The responsive Fabry-Perot optical resonance cavity with thermal poly(N-isopropylacrylamide) polymer brush layer sandwiched by two silver layers was constructed on the end surface of the optical fiber through combining in situ surface-initiated polymerization and metal film deposition techniques. Owing to the thermo-responsiveness of the intermediate layer, the as-prepared LOF sensing system shows a sensitive response towards the environmental temperature. Importantly, the as-prepared LOF sensing system also possesses excellent repeatability and rapid response rate. Together with the features of high sensitivity, excellent repeatability and rapid response rate, we believe such LOF sensing system will provide a foundation for the future applications of medical diagnosis, in vivo detection and public security.

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