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Chwee Teck Lim - One of the best experts on this subject based on the ideXlab platform.

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, Ren Hao Soon, Dinesh Tamil O M Selven, Liangsong Yao, Joo Chuan Yeo, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor...

  • Dual-Core Capacitive Microfiber Sensor for Smart Textile Applications
    ACS applied materials & interfaces, 2019
    Co-Authors: Yuqin Feng, Ren Hao Soon, O Tamil M Selven, Liangsong Yao, Joo Chuan Yeo, Dinesh S, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor respiration rate. We believe that this sensor presents enormous potential in unobtrusive continuous health monitoring.

Ren Hao Soon - One of the best experts on this subject based on the ideXlab platform.

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, Ren Hao Soon, Dinesh Tamil O M Selven, Liangsong Yao, Joo Chuan Yeo, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor...

  • Dual-Core Capacitive Microfiber Sensor for Smart Textile Applications
    ACS applied materials & interfaces, 2019
    Co-Authors: Yuqin Feng, Ren Hao Soon, O Tamil M Selven, Liangsong Yao, Joo Chuan Yeo, Dinesh S, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor respiration rate. We believe that this sensor presents enormous potential in unobtrusive continuous health monitoring.

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, O Tamil M Selven, Sudin Dinesh, Ren Hao Soon
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, w...

Yuqin Feng - One of the best experts on this subject based on the ideXlab platform.

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, Ren Hao Soon, Dinesh Tamil O M Selven, Liangsong Yao, Joo Chuan Yeo, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor...

  • Dual-Core Capacitive Microfiber Sensor for Smart Textile Applications
    ACS applied materials & interfaces, 2019
    Co-Authors: Yuqin Feng, Ren Hao Soon, O Tamil M Selven, Liangsong Yao, Joo Chuan Yeo, Dinesh S, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor respiration rate. We believe that this sensor presents enormous potential in unobtrusive continuous health monitoring.

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, O Tamil M Selven, Sudin Dinesh, Ren Hao Soon
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, w...

Emiliano Schena - One of the best experts on this subject based on the ideXlab platform.

  • cardio respiratory monitoring in archery using a Smart Textile based on flexible fiber bragg grating sensors
    Sensors, 2019
    Co-Authors: Daniela Lo Presti, Luca Massari, Jessica Dabbraccio, Calogero Maria Oddo, Chiara Romano, Michele Arturo Caponero, Carlo Massaroni, Domenico Formica, Emiliano Schena
    Abstract:

    In precision sports, the control of breathing and heart rate is crucial to help the body to remain stable in the shooting position. To improve stability, archers try to adopt similar breathing patterns and to have a low heartbeat during each shot. We proposed an easy-to-use and unobtrusive Smart Textile (ST) which is able to detect chest wall excursions due to breathing and heart beating. The sensing part is based on two FBGs housed into a soft polymer matrix to optimize the adherence to the chest wall and the system robustness. The ST was assessed on volunteers to figure out its performance in the estimation of respiratory frequency (fR) and heart rate (HR). Then, the system was tested on two archers during four shooting sessions. This is the first study to monitor cardio-respiratory activity on archers during shooting. The good performance of the ST is supported by the low mean absolute percentage error for fR and HR estimation (≤1.97% and ≤5.74%, respectively), calculated with respect to reference signals (flow sensor for fR, photopletismography sensor for HR). Moreover, results showed the capability of the ST to estimate fR and HR during different phases of shooting action. The promising results motivate future investigations to speculate about the influence of fR and HR on archers’ performance.

  • Smart Textile Based on Piezoresistive Sensing Elements for Respiratory Monitoring
    IEEE Sensors Journal, 2019
    Co-Authors: Carlo Massaroni, Joshua Di Tocco, Sandra Miccinilli, Silvia Sterzi, Daniela Lo Presti, Paola Saccomandi, Umile Giuseppe Longo, Domenico Formica, Emiliano Schena
    Abstract:

    Wearable systems are gaining large interest in applications related to the monitoring of physiological parameters. Piezoresistive strain sensors are a valid option to develop wearables for several medical applications. Among them, respiratory monitoring can be performed by recording chest movements. The aim of this paper is threefold: 1) the experimental assessment of elastic piezoresistive Textile; 2) the influence of length and width on piezoresistive response; and 3) the use of these elements to develop a Smart Textile (ST) for respiratory monitoring. The ST consists of six piezoresistive elements. The static calibration and the hysteresis analysis were carried out to assess the characteristics of the piezoresistive elements. The feasibility assessment of the ST for respiratory monitoring was performed on four healthy volunteers under two conditions (i.e., quiet breathing and tachypnea). Respiratory frequency values were estimated by the ST and compared with the ones gathered by means of a reference system (i.e., a motion capture system). Length and width influence both the sensitivity and hysteresis of the piezoresistive element. Regarding the ST performance, good agreement with data provided by the reference system was found. Indeed, results obtained by considering the output of single sensing elements and their sum were promising: the difference between the average respiratory frequency was always lower than 1% and 4% during quiet breathing and tachypnea, respectively. The proposed ST seems to be suitable for respiratory frequency monitoring in a wide range of values, where unobtrusiveness is of great value.

  • Smart Textile for respiratory monitoring and thoraco-abdominal motion pattern evaluation
    Journal of Biophotonics, 2018
    Co-Authors: Carlo Massaroni, Cecilia Venanzi, Amanda P. Silvatti, Daniela Lo Presti, Michele Arturo Caponero, Francesco Giurazza, Paola Saccomandi, Domenico Formica, Emiliano Schena
    Abstract:

    The use of wearable systems for monitoring vital parameters has gained wide popularity in several medical fields. The focus of the present study is the experimental assessment of a Smart Textile based on 12 fiber Bragg grating sensors for breathing monitoring and thoraco-abdominal motion pattern analysis. The feasibility of the Smart Textile for monitoring several temporal respiratory parameters (ie, breath-by-breath respiratory period, breathing frequency, duration of inspiratory and expiratory phases), volume variations of the whole chest wall and of its compartments is performed on 8 healthy male volunteers. Values gathered by the Textile are compared to the data obtained by a motion analysis system, used as the reference instrument. Good agreement between the 2 systems on both respiratory period (bias of 0.01 seconds), breathing frequency (bias of -0.02 breaths/min) and tidal volume (bias of 0.09 L) values is demonstrated. Smart Textile shows good performance in the monitoring of thoraco-abdominal pattern and its variation, as well.

  • respiratory and cardiac rates monitoring during mr examination by a sensorized Smart Textile
    Instrumentation and Measurement Technology Conference, 2017
    Co-Authors: Lo D Presti, Michele Arturo Caponero, Francesco Giurazza, Paola Saccomandi, Carlo Massaroni, Emiliano Schena, Domenico Formica, Makoto Muto
    Abstract:

    Wearable sensorized Smart Textile are gaining interests in medicine for monitoring physiological parameters. Moreover, sensing solutions based on fiber optic technologies have shown promising results for applications in Magnetic Resonance (MR) environment. The aim of the present study was to evaluate the functionality of an MR-compatible Smart Textile based on six fiber Bragg grating (FBG) sensors inside the MR environment for the monitoring of both respiratory and cardiac activities during apnea and quiet breathing stages. The proposed Textile was tested on two healthy volunteers undergoing 1.5 Tesla MR examination. By analyzing the raw data collected by the six FBGs, respiratory parameters (i.e., respiratory rate, inspiratory and expiratory periods, inspiratory/respiratory ratio and inspiratory/expiratory ratio) have been computed. Thus, considering the raw data collected by the FBG sensor closest to the heart the resting heart rate was calculated by using the Fast Fourier transform (FFT). Results show that both the big displacements at low frequency (related to the breathing) and the small displacements at higher frequency (related to the heart activity) can be collected with the proposed system allowing the evaluation of both the respiratory and cardiac activities during quiet breathing and apnea without artifacts on images, providing useful information about patient condition.

  • Smart Textile Based on 12 Fiber Bragg Gratings Array for Vital Signs Monitoring
    IEEE Sensors Journal, 2017
    Co-Authors: Daniela Lo Presti, Michele Arturo Caponero, Francesco Giurazza, Paola Saccomandi, Carlo Massaroni, Domenico Formica, Emiliano Schena
    Abstract:

    Over the last decades, wearable systems have gained interest for vital signs monitoring. Among several technologies, fiber Bragg grating (FBG) sensors are becoming popular for some advantages, such as high sensitivity, magnetic resonance compatibility, and the capability of performing distributed measurements. The aim of this paper is twofold: the description of the design and the fabrication of a Smart Textile based on an array of 12 FBGs; its feasibility assessment for monitoring respiratory parameters (i.e., respiratory rate, respiratory period, and inspiratory and expiratory periods) and heart rate on healthy volunteers in two positions (standing and supine). The increased number of FBGs embedded in this system with respect to previous developed prototypes aims at improving its accuracy in the estimation of the mentioned parameters. Future testing will be performed to investigate if the proposed solution allows improving the measurements of respiratory volumes exchanges and in new scenarios (e.g., sports medicine, including walking, running, and cycling activities).

Longteng Yu - One of the best experts on this subject based on the ideXlab platform.

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, Ren Hao Soon, Dinesh Tamil O M Selven, Liangsong Yao, Joo Chuan Yeo, Chwee Teck Lim
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, we report a soft capacitive microfiber sensor that can be woven seamlessly into Textiles for strain measurement. Comprising a dual-lumen elastomeric microtube and liquid metallic alloy, the microfiber sensor enables continual strain perception even after being completely severed. In addition, our microfiber sensor is highly stretchable and flexible and exhibits tunable sensitivity, excellent linearity, a fast response, and negligible hysteresis. More importantly, the microfiber sensor is minimally affected by train rate and compression during strain sensing. Even under drastic environmental changes, the microfiber sensor presents good electrical stability. By integrating the microfiber sensor imperceptibly with Textiles, we devise Smart Textile wearables to interpret hand gestures, detect limb motion, and monitor...

  • dual core capacitive microfiber sensor for Smart Textile applications
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Longteng Yu, Yuqin Feng, O Tamil M Selven, Sudin Dinesh, Ren Hao Soon
    Abstract:

    Wearable sensors for Smart Textile applications have garnered tremendous interest in recent years and can have enormous potential for human machine interfaces and digital health monitoring. Here, w...