A General Strategy for Rapidly Optimizing Wearable Resistive Pressure Sensors

Wen, Lei; Nie, Meng; Fan, Jie; Chen, Pengfan; Li, Bowei; Chen, Shuning; Xiong, Yuwei; Zhang, Qian; Yin, Kuibo; Sun, Litao

doi:10.1002/aelm.202300201

Cited by 4 publications

(1 citation statement)

References 54 publications

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“…As two key factors, intelligence and comfort in wearable products have become a research hotspot in this field. 1 Among them, the flexible pressure sensor can collect the signals of human physiological parameters in real-time according to different needs, and plays a complementary role in monitoring human activities and health status; [2][3][4][5] Portable heating wearable products can improve wearing comfort. 6,7 Flexible sensors can be divided into three types: piezoresistive, 8 piezoelectric, 9 and capacitive.…”

Section: Introductionmentioning

confidence: 99%

Flexible highly conductive melamine foam/copper sulfide has both electrical heating and pressure sensing properties

Zhao,

Pan,

Jiao

et al. 2024

Journal of Elastomers & Plastics

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The increasing advancements in science and technology have led to a growing demand for wearable products. In this paper, copper sulfide/melamine foam composites were prepared by chemical deposition of copper sulfide on the melamine foam skeleton. The effects of different deposition amount of copper sulfide on its microstructure, and electrical conductivity were studied. The results showed that the composite had good electrical conductivity and flexibility when the reaction solution concentration was 1 wt.%. The material can be used as an electric heater, the surface of the material can be heated to 145°C under the low voltage of 4 V, and the material can also be used as a flexible pressure sensor with a high sensitivity of 0.385 kPa−1 and a stability of more than 2000 cycles. Materials based on flexible copper sulfide/melamine foams can be used for electric heaters and flexible pressure sensor, which will make them promising applications in wearable products.

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Section: Introductionmentioning

confidence: 99%

Flexible highly conductive melamine foam/copper sulfide has both electrical heating and pressure sensing properties

Zhao,

Pan,

Jiao

et al. 2024

Journal of Elastomers & Plastics

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Poly‐DADMAC Functionalized Polyethylene Oxide Composite Nanofibrous Mat as Highly Positive Material for Triboelectric Nanogenerators and Self‐Powered Pressure Sensors

Robiul Islam,

Faruk,

Rana

et al. 2024

Adv Funct Materials

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The triboelectric nanogenerator (TENG) is a promising technology for self‐powered sensors and vibration‐driven energy harvesting, with its development especially influenced by the characteristics of tribomaterials. However, developing tribopositive materials with a strong cationic effect and high electron‐donating capability remains challenging. In this study, a novel polyethylene oxide@poly(diallyldimethylammonium chloride) (PEO@Poly‐DADMAC) composite nanofiber mat (NFM) is successfully fabricated using the electrospinning technique. It functions as a highly tribopositive material, particularly enhancing the performance of nanofiber‐based TENGs (NF‐TENGs). Through investigation of its physical and triboelectric properties, the study revealed that incorporating cationic Poly‐DADMAC with PEO effectively boosts NF‐TENG output by increasing the dielectric constant (twofold), electron‐donating affinities, and surface charge trapping capability. The fabricated NF‐TENG shows excellent output performance generating 980 V, a maximum power density of 5.6 Wm−2, and an ultrahigh sensitivity of 8.923 V kPa−1 which endows composite reliability for power supply and sensing capability. More importantly, the PEO@Poly‐DADMAC‐based self‐powered motion sensor with an NF‐TENG array is successfully demonstrated in multifunctional applications such as athlete activity tracking, and wireless gaming interface control. This study not only offers new insights into optimizing performance and selecting alternative tribomaterials but also provides valuable guidance for developing high‐output TENGs and highly sensitive self‐powered sensors.

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Tactile Recognition of Shape and Texture on the Same Substrate

Wen,

Nie,

Fan

et al. 2023

Advanced Intelligent Systems

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Due to the difficulties in designing sensor arrays with a wide detection range, high sensitivity, and the sensing ability to convert tangential force into normal force on the same substrate, the integration of shape and texture recognitions in one electronic skin (e‐skin) has not been realized so far. Herein, an e‐skin tactile‐sensing system is presented, based on resistive pressure‐sensing units (serving as Meissner corpuscles) unevenly distributed on a bionic hand‐shaped polyimide substrate, which can realize shape and texture recognitions concurrently. A multilayer microporous structure with different pores is designed and introduced into the sensor, which enables each sensing unit ultrahigh sensitivity and a wide detection range. Meanwhile, a customized micro‐pyramid array is developed and assembled to the sensor array, which realizes the transformation from tangential force to normal force. With the help of artificial intelligence technology, the recognition accuracy reaches 100% for 8 different shapes, and 99.7% for 10 different textures, respectively. The proposed design strategy enables compatible fabrication, simple signal processing, and convenient extension of bionic free‐shaped e‐skin, which paves a promising way for the popularization of e‐skin in large‐scale intelligent wearable fields.

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A General Strategy for Rapidly Optimizing Wearable Resistive Pressure Sensors

Cited by 4 publications

References 54 publications

Flexible highly conductive melamine foam/copper sulfide has both electrical heating and pressure sensing properties

Flexible highly conductive melamine foam/copper sulfide has both electrical heating and pressure sensing properties

Poly‐DADMAC Functionalized Polyethylene Oxide Composite Nanofibrous Mat as Highly Positive Material for Triboelectric Nanogenerators and Self‐Powered Pressure Sensors

Tactile Recognition of Shape and Texture on the Same Substrate

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