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Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers

Wen Yu et al · Editorial Office of Opto-Electronic Journals Group, Institute of Optics and Electronics, CAS, China · 2022

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Author / responsible party
Wen Yu et al
Publisher
Editorial Office of Opto-Electronic Journals Group, Institute of Optics and Electronics, CAS, China
Year
2022
ISSN
2096-4579
ISSN
2096-4579
Language
English

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Flexible strain sensors play an important role in electronic skins, wearable medical devices, and advanced robots. Herein, a highly sensitive and fast response optical strain sensor with two evanescently coupled optical micro/nanofibers (MNFs) embedded in a polydimethylsiloxane (PDMS) film is proposed. The strain sensor exhibits a gauge factor as high as 64.5 for strain ≤ 0.5% and a strain resolution of 0.0012% which corresponds to elongation of 120 nm on a 1 cm long device. As a proof-of-concept, highly sensitive fingertip pulse measurement is realized. The properties of fast temporal frequency response up to 30 kHz and a pressure sensitivity of 102 kPa−1 enable the sensor for sound detection. Such versatile sensor could be of great use in physiological signal monitoring, voice recognition and micro-displacement detection.

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APA 7

al, W. Y. E. (2022). Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers. https://doi.org/10.29026/oea.2022.210101

MLA

al, Wen Yu et. "Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers." 2022. https://doi.org/10.29026/oea.2022.210101.

Chicago

al, Wen Yu et. 2022. "Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers.". https://doi.org/10.29026/oea.2022.210101.

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al, W. Y. E. 2022, Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers, Editorial Office of Opto-Electronic Journals Group, Institute of Optics and Electronics, CAS, China, available at: https://doi.org/10.29026/oea.2022.210101 [Accessed 8 Aug. 2026].

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Title
Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers
Author / contributors
Wen Yu et al
Publisher
Editorial Office of Opto-Electronic Journals Group, Institute of Optics and Electronics, CAS, China
Publication year
2022
ISSN
2096-4579
ISSN
2096-4579
Language
English

Subjects

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optical micro/nanofiber; strain sensor; pressure sensor; micro-displacement; directional coupler
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