Highly sensitive and fast response strain sensor based on evanescently coupled micro/nanofibers
소멸 결합된 마이크로/나노 섬유를 기반으로 한 고감도 및 빠른 응답 스트레인 센서
Sensor de deformación de alta sensibilidad y respuesta rápida basado en micro/nanofibras acopladas evanescentemente
Capteur de contrainte très sensible et à réponse rapide basé sur des micro/nanofibres à couplage évanescent
Высокочувствительный и быстродействующий тензометрический датчик на основе быстросоединенных микро/нановолокон
Wen Yu 余文 ¹, Ni Yao ², Jing Pan 潘婧 ¹, Wei Fang 方伟 ¹, Xiong Li ³, Limin Tong 童利民 ¹, Lei Zhang 张磊 ¹ ²
¹ State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
中国 杭州 浙江大学 光电科学与工程学院 现代光学仪器国家重点实验室
² Research Center for Intelligent Sensing, Zhejiang Lab, Hangzhou 311121, China
中国 杭州 之江实验室智 智能感知研究院
³ Tencent Robotics X Lab, Tencent Technology (Shenzhen) Co. Ltd, Shenzhen 518054, China
中国 深圳 腾讯科技(深圳)有限公司 腾讯Robotics X实验室
Opto-Electronic Advances, 15 July 2022

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.
Opto-Electronic Advances_1
Opto-Electronic Advances_2
Opto-Electronic Advances_3
Reviews and Discussions
Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
Specialty optical fibers for advanced sensing applications
Periodic transparent nanowires in ITO film fabricated via femtosecond laser direct writing
Chiral detection of biomolecules based on reinforcement learning
High-speed visible light communication based on micro-LED: A technology with wide applications in next generation communication
Directional high-efficiency nanowire LEDs with reduced angular color shift for AR and VR displays
Comparative analysis of NovaSeq 6000 and MGISEQ 2000 single-cell RNA sequencing data
Integrated liver proteomics and metabolomics identify metabolic pathways affected by pantothenic acid deficiency in Pekin ducks
Photo-processing of perovskites: current research status and challenges
Influence of N-doping on dielectric properties of carbon-coated copper nanocomposites in the microwave and terahertz ranges
Towards integrated mode-division demultiplexing spectrometer by deep learning
Discovery of novel aspartate derivatives as highly potent and selective FXIa inhibitors

Previous Article                                Next Article
Copyright © Hot Paper