Fast-response piezoresistive pressure sensor based on polyaniline cotton fabric for human motion monitoring

Chen, Fangchun; Liu, Hongjia; Xu, Mengting; Ye, Jiapeng; Li, Zhi; Qin, Lizhao; Zhang, Tonghua

doi:10.1007/s10570-022-04661-z

Cited by 26 publications

(8 citation statements)

References 46 publications

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“…It shows that as the pressure increases, the signals of resistance change at the same strain in the experiments and remain basically the same. In addition, the sensitivity, response time, and sensing range are analyzed by comparison with recent literature studies, − and it can be seen that the present PMCI has a fast response time, higher sensitivity, and wider sensing range as shown in Figure h. Comparisons with other properties of pressure sensing reported in the relevant literature are detailed in Table S1.…”

Section: Resultsmentioning

confidence: 78%

Bioinspired Low Hysteresis Flexible Pressure Sensor Using Nanocomposites of Multiwalled Carbon Nanotubes, Silicone Rubber, and Carbon Nanofiber for Human–Computer Interaction

Guo,

Liu,

Tang

et al. 2024

ACS Appl. Nano Mater.

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The development and utilization of flexible piezoresistive sensors based on bionic nanomaterials have garnered considerable attention due to their broad potential in various domains. However, the key to their enhanced performance lies in incorporating microstructures and conductive coatings, which maximize initial resistance and minimize resistance upon pressure application, thereby amplifying the change in resistance signal. In this study, we draw inspiration from the microconvex structure observed on the skin of crocodiles and propose a bionic-structured flexible pressure sensor. The sensor is fabricated using nanocomposites comprising multiwalled carbon nanotubes, silicone rubber, and carbon nanofiber in conjunction with a three-dimensional (3D)-printed bionic structural mold. Sensor structure is similar to a sandwich structure with three layers: a flexible substrate layer, a sensing layer, and an interdigital electrode layer. Our sensor exhibits improved pressure-sensing capabilities, characterized by rapid response and recovery times (25 ms), a wide pressure detection range (0−80 kPa), minimal hysteresis (2.44%), high sensitivity (0.4311 kPa −1 within the 0−10 kPa range), and fine stability (withstanding 6000 cycles under varying pressures). Notably, this sensor has an efficient sensing ability, long-term stability, and good waterproofing properties, expanding its potential applications in human−computer interaction, motion monitoring, intelligent robotics, and underwater rescue operations.

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Section: Resultsmentioning

confidence: 78%

Bioinspired Low Hysteresis Flexible Pressure Sensor Using Nanocomposites of Multiwalled Carbon Nanotubes, Silicone Rubber, and Carbon Nanofiber for Human–Computer Interaction

Guo,

Liu,

Tang

et al. 2024

ACS Appl. Nano Mater.

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“…To address the aforementioned challenges, considerable efforts have been devoted to the careful selection of raw materials and structural design. In terms of device structure, various device structures have been proposed for textile-based piezoresistive sensors, including multilayer structures, [22][23][24] three-dimensional architectures, 25,26 orthogonal arrangements, 27,28 hierarchical layouts, 29 and so forth. These diverse strategies highlight the feasibility of enhancing sensitivity by minimizing the initial contact area between the electrode layer and the sensing electrode, thereby increasing the initial contact resistance.…”

Section: Introductionmentioning

confidence: 99%

A personalized electronic textile for ultrasensitive pressure sensing enabled by biocompatible MXene/PEDOT:PSS composite

Li,

Cao,

Liu

et al. 2024

Carbon Energy

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Flexible, breathable, and highly sensitive pressure sensors have increasingly become a focal point of interest due to their pivotal role in healthcare monitoring, advanced electronic skin applications, and disease diagnosis. However, traditional methods, involving elastomer film‐based substrates or encapsulation techniques, often fall short due to mechanical mismatches, discomfort, lack of breathability, and limitations in sensing abilities. Consequently, there is a pressing need, yet it remains a significant challenge to create pressure sensors that are not only highly breathable, flexible, and comfortable but also sensitive, durable, and biocompatible. Herein, we present a biocompatible and breathable fabric‐based pressure sensor, using nonwoven fabrics as both the sensing electrode (coated with MXene/poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate [PEDOT:PSS]) and the interdigitated electrode (printed with MXene pattern) via a scalable spray‐coating and screen‐coating technique. The resultant device exhibits commendable air permeability, biocompatibility, and pressure sensing performance, including a remarkable sensitivity (754.5 kPa−1), rapid response/recovery time (180/110 ms), and robust cycling stability. Furthermore, the integration of PEDOT:PSS plays a crucial role in protecting the MXene nanosheets from oxidation, significantly enhancing the device's long‐term durability. These outstanding features make this sensor highly suitable for applications in full‐range human activities detection and disease diagnosis. Our study underscores the promising future of flexible pressure sensors in the realm of intelligent wearable electronics, setting a new benchmark for the industry.

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“…Flexible pressure sensors have been increasingly used in wearable devices, electronic skins, and personal health monitoring [1][2][3], which are capable of converting pressure into corresponding electrical signals. Among the four types of pressure sensors (piezoresistive, capacitive, piezoelectric, and triboelectric [4][5][6][7]), piezoresistive pressure sensors comprised electrically conductive networks within an insulated matrix, and they arouse tremendous attention with a feasible fabrication process, high reliability, and low cost; these properties enable them to be used in the structural health monitoring for damage sensing and strain gauges [8,9].…”

Section: Introductionmentioning

confidence: 99%

Piezoresistive Porous Composites with Triply Periodic Minimal Surface Structures Prepared by Self-Resistance Electric Heating and 3D Printing

Peng,

Yu,

et al. 2024

Sensors

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Three-dimensional flexible piezoresistive porous sensors are of interest in health diagnosis and wearable devices. In this study, conductive porous sensors with complex triply periodic minimal surface (TPMS) structures were fabricated using the 3D printed sacrificial mold and enhancement of MWCNTs. A new curing routine by the self-resistance electric heating was implemented. The porous sensors were designed with different pore sizes and unit cell types of the TPMS (Diamond (D), Gyroid (G), and I-WP (I)). The impact of pore characteristics and the hybrid fabrication technique on the compressive properties and piezoresistive response of the developed porous sensors was studied. The results indicate that the porous sensors cured by the self-resistance electric heating could render a uniform temperature distribution in the composites and reduce the voids in the walls, exhibiting a higher elastic modulus and a better piezoresistive response. Among these specimens, the specimen with the D-based structure cured by self-resistance electric heating showed the highest responsive strain (61%), with a corresponding resistance response value of 0.97, which increased by 10.26% compared to the specimen heated by the external heat sources. This study provides a new perspective on design and fabrication of porous materials with piezoresistive functionalities, particularly in the realm of flexible and portable piezoresistive sensors.

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Fast-response piezoresistive pressure sensor based on polyaniline cotton fabric for human motion monitoring

Cited by 26 publications

References 46 publications

Bioinspired Low Hysteresis Flexible Pressure Sensor Using Nanocomposites of Multiwalled Carbon Nanotubes, Silicone Rubber, and Carbon Nanofiber for Human–Computer Interaction

Bioinspired Low Hysteresis Flexible Pressure Sensor Using Nanocomposites of Multiwalled Carbon Nanotubes, Silicone Rubber, and Carbon Nanofiber for Human–Computer Interaction

A personalized electronic textile for ultrasensitive pressure sensing enabled by biocompatible MXene/PEDOT:PSS composite

Piezoresistive Porous Composites with Triply Periodic Minimal Surface Structures Prepared by Self-Resistance Electric Heating and 3D Printing

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