Research progress of flexible capacitive pressure sensor for sensitivity enhancement approaches

Li, Ruiqing; Zhou, Qun; Bi, Yin; Cao, Shaojie; Xia, Xue; Yang, Aolin; Li, Siming; Xiao, Xueliang

doi:10.1016/j.sna.2020.112425

Cited by 158 publications

(119 citation statements)

References 100 publications

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“…When e a 4 e a0 , the capacitance variation increases, leading to improved sensitivity. 90 For example, Shi et al have developed a process to fabricate flexible and sensitive capacitive pressure sensors (Fig. 4b) by using a silver nanowire/PMDS composite with patterned microstructures as the dielectric layer.…”

Section: Dielectric Layer Modificationmentioning

confidence: 99%

Flexible capacitive pressure sensors for wearable electronics

et al. 2022

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Section: Dielectric Layer Modificationmentioning

confidence: 99%

Flexible capacitive pressure sensors for wearable electronics

et al. 2022

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“…Several strategies were developed to improve the sensitivity and sensing range of the PPS, such as (a) building microstructures on electrode or dielectric; (b) using a composite dielectric; (c) engineering holes inside the dielectric layer [ 22 ]. Engineering microstructure of the electrode or dielectric is widely used.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Pseudocapacitive Iontronic Pressure Sensor with Broad Sensing Range

et al. 2021

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Highlights The iontronic pressure sensor achieved an ultrahigh sensitivity (Smin > 200 kPa−1, Smax > 45,000 kPa−1). The iontronic pressure sensor exhibited a broad sensing range of over 1.4 MPa. Pseudocapacitive iontronic pressure sensor using MXene was proposed. ABSTRACT Flexible pressure sensors are unprecedentedly studied on monitoring human physical activities and robotics. Simultaneously, improving the response sensitivity and sensing range of flexible pressure sensors is a great challenge, which hinders the devices’ practical application. Targeting this obstacle, we developed a Ti3C2Tx-derived iontronic pressure sensor (TIPS) by taking the advantages of the high intercalation pseudocapacitance under high pressure and rationally designed structural configuration. TIPS achieved an ultrahigh sensitivity (Smin > 200 kPa−1, Smax > 45,000 kPa−1) in a broad sensing range of over 1.4 MPa and low limit of detection of 20 Pa as well as stable long-term working durability for 10,000 cycles. The practical application of TIPS in physical activity monitoring and flexible robot manifested its versatile potential. This study provides a demonstration for exploring pseudocapacitive materials for building flexible iontronic sensors with ultrahigh sensitivity and sensing range to advance the development of high-performance wearable electronics.

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“…Capacitive sensors usually consist of two parallel electrodes placed closely with a dielectric layer in between. Upon deformation, the capacitance changes with the change in distance between electrodes and produces a corresponding signal [ 269 ].…”

Section: Wearable Health Monitoring Applications Of Printed Electrodesmentioning

confidence: 99%

Nanomaterials-patterned flexible electrodes for wearable health monitoring: a review

Hasan

Hossain

2021

J Mater Sci

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Electrodes fabricated on a flexible substrate are a revolutionary development in wearable health monitoring due to their lightweight, breathability, comfort, and flexibility to conform to the curvilinear body shape. Different metallic thin-film and plastic-based substrates lack comfort for long-term monitoring applications. However, the insulating nature of different polymer, fiber, and textile substrates requires the deposition of conductive materials to render interactive functionality to substrates. Besides, the high porosity and flexibility of fiber and textile substrates pose a great challenge for the homogenous deposition of active materials. Printing is an excellent process to produce a flexible conductive textile electrode for wearable health monitoring applications due to its low cost and scalability. This article critically reviews the current state of the art of different textile architectures as a substrate for the deposition of conductive nanomaterials. Furthermore, recent progress in various printing processes of nanomaterials, challenges of printing nanomaterials on textiles, and their health monitoring applications are described systematically. Graphical Abstract

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Research progress of flexible capacitive pressure sensor for sensitivity enhancement approaches

Cited by 158 publications

References 100 publications

Flexible capacitive pressure sensors for wearable electronics

Flexible capacitive pressure sensors for wearable electronics

Highly Sensitive Pseudocapacitive Iontronic Pressure Sensor with Broad Sensing Range

Nanomaterials-patterned flexible electrodes for wearable health monitoring: a review

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