Article
Engineering, Multidisciplinary
Ahmed Hisham E. Morshed, Raghied M. Atta
Summary: This study investigates the use of multimode optical fiber sensors in detecting strain and vibration of infrastructures. The performance of the multimode sensor is compared with the well-developed fiber Bragg grating sensor by measuring strain on a pressurized pipe. The results show that the spectral features of the multimode sensor have good linearity and higher sensitivity to strain compared to the fiber Bragg grating.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Tanvir Alam, Fadoua Saidane, Abdullah Al Faisal, Ashaduzzaman Khan, Gaffar Hossain
Summary: With the development of wearable electronics, traditional textiles have been transformed into precise strain sensors with high accuracy and broad spectrum sensitivity, which has become a research focus in human motion monitoring. A low-cost conductive graphite-polyurethane nanocomposite paste was developed and applied to a modified textile to create a highly efficient strain sensor. This sensor has high mechanical stability and can accurately monitor the movement and angle of fingers, wrists, and elbows.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Optics
Liangye Li, Shunfeng Sheng, Yunfei Liu, Jianpei Wen, Changying Song, Zhipeng Chen, Wangyang Xu, Zhi Zhang, Wei Fan, Chen Chen, Qizhen Sun, Perry-Ping Shum
Summary: An optical fiber sensor-assisted smartwatch is developed for precise continuous blood pressure monitoring. The smartwatch features a fiber adapter and a liquid capsule to detect pulse wave signals and expand the sensing area, respectively. With machine learning algorithms, it can continuously and accurately monitor blood pressure.
Review
Materials Science, Textiles
Ka-Po Lee, Joanne Yip, Kit-Lun Yick, Chao Lu, Chris K. Lo
Summary: Receptivity towards textile-based fiber optic sensors for monitoring health is increasing, but identifying knowledge structure and research trends is challenging due to the abundance of related studies. This article provides an objective literature review and analyzes trends through citation network analysis, identifying flexible sensors for vital signs monitoring as a key research domain, mainly focusing on respiratory monitoring. Data collection from textile-based fiber optic sensors is invaluable for various applications such as rehabilitation, disease detection, accident prevention, and assessing athlete performance.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Jingjing Guo, Bingqian Zhou, Zhou Du, Changxi Yang, Lingjie Kong, Lijun Xu
Summary: The need for glucose monitoring sensors for the diagnosis, prognosis, and management of diabetes is becoming increasingly urgent. This study presents a soft and plasmonic hydrogel optical sensor that enables quantitative and continuous glucose monitoring under physiological conditions, with high linearity and reusability.
Article
Materials Science, Multidisciplinary
Shuqi Ma, Xiaoyu Wang, Pan Li, Ni Yao, Jianliang Xiao, Haitao Liu, Zhang Zhang, Longteng Yu, Guangming Tao, Xiong Li, Limin Tong, Lei Zhang
Summary: This study proposes an optically driven wearable human-interactive smart textile that integrates a PDMS patch embedded with optical micro/nanofibers array with a piece of textiles. The smart textile exhibits high sensitivity and fast response for touch sensing, and machine learning is used for touch manner recognition. This optical smart textile has significant implications for AR/VR and robotics applications.
ADVANCED FIBER MATERIALS
(2022)
Article
Chemistry, Analytical
Shen Liu, Wenqi Yan, Junlan Zhong, Tao Zou, Min Zhou, Peijing Chen, Hang Xiao, Bonan Liu, Zhiyong Bai, Yiping Wang
Summary: This article introduces an all fiber-optic breath sensor based on E-HIPFG, which has ultrafast response and recovery time, insensitivity to external influences, and does not require additional coating materials or fiber architectures, making it suitable for continuous and long-term breath monitoring.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Spectroscopy
Xiuyu Shen, Qian Hu, Mingqiao Ge
Summary: A multifunctional fiber with quick-responsive reversible photochromic and long afterglow luminescent properties was developed, showing great potential for various applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Engineering, Electrical & Electronic
Liangye Li, Yanpeng Li, Liuyang Yang, Fang Fang, Zhijun Yan, Qizhen Sun
Summary: The wearable optical fiber blood pressure wristband can continuously and accurately measure the pulse waveform by utilizing the phase variation of light, thus estimating blood pressure. Clinical trials showed that the measurement errors of the blood pressure wristband were within the required range, indicating good accuracy and practicality.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Xiujuan Wang, Yaming Jiang, Siyi Xu, Hao Liu, Xiaozhi Li
Summary: This study reports a smart garment for monitoring human body temperature based on FBG sensors, which exhibit good vibration resistance and bending adaptability. By integrating the sensor, optical fiber, and garment using an electric iron and hot press machine, it can be used in special environments.
Article
Computer Science, Information Systems
Niclas Richter, Khorolsuren Tuvshinbayar, Guido Ehrmann, Andrea Ehrmann
Summary: The possibility of measuring biosignals by smart textiles with embedded electronics has increased due to the availability of low-cost sensors and single circuit boards such as Arduino and Raspberry Pi. One challenge with e-textiles is their washability, but this study demonstrates that optical pulse sensors and microcontrollers can endure 10 washing cycles at 30-60 degrees Celsius without defects, even without encapsulation. The use of an ESP8266 with integrated Wi-Fi functionality is suggested for easier garment integration, along with a new program code for measuring beats per minute (BMP) with optimized accuracy.
Article
Engineering, Electrical & Electronic
Hongwei Liang, Yingying Wang, Lingling Kan, Kaichuan Xu, Taiji Dong, Weicheng Wang, Bingkun Gao, Chunlei Jiang
Summary: We propose a sensor that integrates self-mixing interference with microfiber for human health monitoring. By measuring power variation of reflected light from a microfiber embedded in PDMS, pulse waves can be continuously and accurately monitored in real time, and blood pressure can be measured through pulse transmission time (PTT). The sensor has demonstrated high sensitivity, noninvasive and long-term monitoring capabilities, successfully meeting the requirements for health monitoring according to AAMI standards. This application of microfiber in the self-mixing sensor provides an effective solution for smart health monitoring and has potential applications in disease prevention and healthcare.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Jun Xu, Yucong Zhou, Cheng Zhang, Yitong Li, Xuehui Ma, Dali Ma, Changyun Miao
Summary: Clothing-based respiratory monitoring provides real-time non-invasive monitoring for individuals and can be used for daily health observation. This study developed a respiratory monitoring garment using an optical fiber sensing fabric woven into plain fabric. Tests showed that the smart garment maintained good consistency with commercial sensors in monitoring the respiratory waveform and rate, with a maximum error of 2 rpm. The garment demonstrated high monitoring accuracy, motion monitoring stability, and comfort, making it suitable for daily respiratory monitoring.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Leticia Avellar, Gabriel Delgado, Carlos Marques, Anselmo Frizera, Arnaldo Leal-Junior, Eduardo Rocon
Summary: This paper presents the development of a smart garment equipped with POF sensors to identify impact locations during a balance assessment perturbation protocol. The system was characterized through two tests, showing the ability to assess human balance under instability conditions. Results demonstrated the potential of the system to improve balance assessments by combining impact region identification with trunk angles obtained from an IMU.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Lipeng Pan, Kailun Huang, Guangzong Min, Xiaobao Li, Junjun Shao, Fangxing Ma, Lingqing Kong, Mingye Zou, Guoqing Meng, Wei Chen, Likun Yang, Xiang-Yang Liu, Naibo Lin
Summary: The study introduces a simple and compact fiber optic sensor for the detection and quantification of TYR. The sensor has high sensitivity and portability, making it a convenient and practical point of care detection method.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)