Flexible Wide-Range Triboelectric Sensor for Physiological Signal Monitoring and Human Motion Recognition

Xu, Ran; Luo, Fangyuan; Zhu, Zhiyuan; Li, Mintong; Chen, Bin

doi:10.1021/acsaelm.2c00681

Cited by 23 publications

(10 citation statements)

References 48 publications

(50 reference statements)

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“…This device has an excellent range of pressure measurement of 0–450 kPa. 184 Meanwhile, the other performance parameters also are superior; for example, the sensitivity is 249.32 mV kPa −1 , the response time is 26 ms, and the detection limit is 8.72 Pa. Thus, this triboelectric pressure sensor can be used to detect small motion, and it can combine a convolutional gated recurrent unit model to recognize four human motions with 99.42% accuracy.…”

Section: Recent Advances Of Triboelectric Micro-pressure Sensors For ...mentioning

confidence: 93%

“…Some researchers are developing self-powered pressure sensors based on the triboelectric effect for motion monitoring. Kim et al reported a pressure sensor based on triboelectric- 181 2.2 V kPa −1 0.1-98 kPa Not known PDMS 182 3.627 kPa −1 0-8 kPa 5 Pa 1.264 kPa −1 8-80 kPa 5 Pa Porous PDMS 183 54.37 mV kPa −1 0-80 kPa Not known 9.80 mV kPa −1 80-240 kPa Not known PDMS 184 249.32 mV kPa −1 0-450 kPa 8.72 Pa PDMS/Ag 185 1.67 V kPa −1 0-3 kPa Not known 0.20 V kPa −1 3-32 kPa Not known PTFE-Nylon 176 1.33 V kPa −1 181 2.2 V kPa −1 0.1-98 kPa Not known Not known PDMS 182 3.627 kPa exoelectric nanogenerators for human motion monitoring, such as eye blinking, nger bending, knee bending and swallowing. 178 Because the device combines the triboelectric-exoelectric effect, it shows a higher sensitivity of up to 0.173 V kPa −1 .…”

Section: Motion Monitoringmentioning

confidence: 99%

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Recent progress in flexible micro-pressure sensors for wearable health monitoring

Dun

Geng

et al. 2023

Nanoscale Adv.

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Section: Recent Advances Of Triboelectric Micro-pressure Sensors For ...mentioning

confidence: 93%

Section: Motion Monitoringmentioning

confidence: 99%

Recent progress in flexible micro-pressure sensors for wearable health monitoring

Dun

Geng

et al. 2023

Nanoscale Adv.

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“…In addition to the works discussed here, several interesting recent works have focused on the application of TENG-based self-powered sensors to human motion monitoring and biomechanical sensing. [167,168] Furthermore, research efforts have been channelized toward coupling environmentally sustainable and eco-friendly TENGs with custom-developed machine learning models for human motion prediction with a high degree of accuracy. [52] In addition to the applications of TENGs toward human motion monitoring, several research groups have focused on the structure and surface morphologies of triboelectric devices with the goal of optimizing their performance.…”

Section: Triboelectric Self-powered Sensorsmentioning

confidence: 99%

Nanomaterials‐Based Bioinspired Next Generation Wearable Sensors: A State‐of‐the‐Art Review

Sengupta,

Kottapalli

2023

Adv Elect Materials

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With a constantly growing percentage of the population having access to high‐quality healthcare facilities, preventable pathogenic illnesses have been nearly eradicated in the developed parts of the world, which has led to a significant rise in the average human life expectancy over the last few decades. In such a highly developed world, age‐related illnesses will lead to an immense burden on healthcare providers. Remote health monitoring enabled by wearable sensors will play a significant role in the growth and evolution of Health 3.0 by providing intimate and valuable information to healthcare providers regarding the progression of disease in patients with critical life‐altering conditions. Especially, in the case of people suffering from neurodegenerative disorders, inexpensive and user‐friendly wearable sensors can enable physiotherapists monitor real‐time physiological parameters to design patient‐specific treatment plans. This review provides a comprehensive overview of the recent advances and emerging trends at the convergence of biomimicry and nanomaterial sensors, with a specific focus on wearable skin‐inspired mechanical sensors for applications in IoT‐enabled human physiological parameters monitoring. Skin‐inspired wearable mechanical sensors with relevance to the most common types of sensing mechanisms including piezoresistive, piezocapacitive, and triboelectric sensing are discussed along with their current challenges and possible future opportunities.

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“…In addition, the sandwich structure has become the most mainstream method in the encapsulation of capacitive pressure sensors. The dielectric layer is prepared separately and the encapsulation electrode is directly superimposed. − This packaging method is simple but easily introduces an air gap between the electrode and dielectric layer, resulting in a large difference in the performance of the sensor fabricated by each packaging. The above problems and consistency can be improved by docking the single electrode and dielectric layer as a whole.…”

Section: Introductionmentioning

confidence: 99%

Pressure Sensors Combining Porous Electrodes and Electrospun Nanofiber-Based Ionic Membranes

Fan

Yang

Sun

2023

ACS Appl. Nano Mater.

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It is one of the most urgent development directions and crucial challenges for flexible pressure sensors to have both characteristics of high sensitivity and wide measuring range. To address this challenging problem, this paper proposes an innovative, convenient, and industrially scalable capacitive pressure sensor that combines porous electrodes and electrospun nano ionic membranes with surface microstructure. The advantage of this sensor is that nano ionic nanofiber membranes are directly prepared on porous conductive fabrics by electrospinning with high reliability and good repeatability. The prepared dielectric layer of the sensor is in complete contact with the electrode, which effectively eliminates the uncertainty of air gap interference in traditional packaging methods. The sensing mechanism of the designed sensor is also persuasively revealed by finite-element and theoretical analysis in this paper. First, the porosity of both the conductive fabric and dielectric layer expands the measurement range. Second, the surface microstructure of the nano ion membrane increases the effective contact area between the dielectric layers when external pressure is applied to the sensor, thus increasing the conduction path of the ions. The increase of the ionizing degree under pressure leads to the change of the interface capacitance. These make the sensor have high sensitivity in the wide measurement range. The designed sensor exhibits a sensitivity of up to 1254.5 kPa −1 over a low-pressure measurement range of 0−10 kPa, providing an amazingly wide measurement range of 0−800 kPa, with an extremely high sensitivity of 128.1 kPa −1 over the entire measurement range. The designed sensor illustrates both a fairly fast response time of 10 ms and a relaxation time of 16 ms, in addition to the durability of up to 3000 cycles. The above exceptional performance demonstrates its remarkable potential applications in smart wearable devices and pneumatic pressure monitoring.

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Flexible Wide-Range Triboelectric Sensor for Physiological Signal Monitoring and Human Motion Recognition

Cited by 23 publications

References 48 publications

Recent progress in flexible micro-pressure sensors for wearable health monitoring

Recent progress in flexible micro-pressure sensors for wearable health monitoring

Nanomaterials‐Based Bioinspired Next Generation Wearable Sensors: A State‐of‐the‐Art Review

Pressure Sensors Combining Porous Electrodes and Electrospun Nanofiber-Based Ionic Membranes

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