High-Performance Pressure Sensor for Monitoring Mechanical Vibration and Air Pressure

Meng, Yu; Li, Hongwei; Wu, Kunjie; Zhang, Suna; Li, Liqiang

doi:10.3390/polym10060587

Cited by 10 publications

(7 citation statements)

References 41 publications

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“…Among them, PDMS is the most widely used material because of its excellent comprehensive performance, not only as a flexible substrate, but also as a pressure-sensing layer. So far, PDMS-based composite pressure/strain sensors have been manufactured by combining various elements, such as metal nanomaterials (e.g., metal particles [ 31 ] and metal nanowires/networks [ 32 , 33 , 34 , 35 ]), carbon materials (e.g., carbon nanotubes (CNT), graphene/graphene oxide (GO), and carbon black (CB)), and other hybrid micro/nano-composites [ 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ].…”

Section: Polymersmentioning

confidence: 99%

“…Another method used to characterize response time is to count the frequency response, and the frequency signal can be easily converted into a pulse signal with any desired amplitude through data processing or additional circuits (such as an edge detector) [ 100 ]. High time resolution means faster and more accurate dynamic detection [ 37 , 43 ].…”

Section: Performance Comparisonmentioning

confidence: 99%

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Progress in Microtopography Optimization of Polymers-Based Pressure/Strain Sensors

Sun

Wang

2023

Polymers

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Due to the wide application of wearable electronic devices in daily life, research into flexible electronics has become very attractive. Recently, various polymer-based sensors have emerged with great sensing performance and excellent extensibility. It is well known that different structural designs each confer their own unique, great impacts on the properties of materials. For polymer-based pressure/strain sensors, different structural designs determine different response-sensing mechanisms, thus showing their unique advantages and characteristics. This paper mainly focuses on polymer-based pressure-sensing materials applied in different microstructures and reviews their respective advantages. At the same time, polymer-based pressure sensors with different microstructures, including with respect to their working mechanisms, key parameters, and relevant operating ranges, are discussed in detail. According to the summary of its performance and mechanisms, different morphologies of microstructures can be designed for a sensor according to its performance characteristics and application scenario requirements, and the optimal structure can be adjusted by weighing and comparing sensor performances for the future. Finally, a conclusion and future perspectives are described.

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Section: Polymersmentioning

confidence: 99%

Section: Performance Comparisonmentioning

confidence: 99%

Progress in Microtopography Optimization of Polymers-Based Pressure/Strain Sensors

Sun

Wang

2023

Polymers

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“… Nylon membrane filter as mold −6.08 (0–0.15) -/8.5 kPa -/- 10 4 (L) -/- (♡) PR F. Xuan [ 37 ] 2018 Triangular lines of PDMS (10 µm to 14 µm of width, 28 µm to 39 µm of height) covered with CNTs as bottom elec., and smooth PDMS covered with CNTs as top elec. Laser engraving −0.11 (0.005–2) −1.28 × 10 −3 (10–50) 5 Pa/ 50 kPa 200/150 10 4 (L) 1 V/- (♡) PR L. Li [ 283 ] 2018 Pyramid-like structures (4 µm of height) of MWCNTs@PDMS, with an elec. of Au and other of ITO on PET.…”

Section: Table A1mentioning

confidence: 99%

Transduction Mechanisms, Micro-Structuring Techniques, and Applications of Electronic Skin Pressure Sensors: A Review of Recent Advances

Santos

Fortunato

Martins

et al. 2020

Sensors

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Electronic skin (e-skin), which is an electronic surrogate of human skin, aims to recreate the multifunctionality of skin by using sensing units to detect multiple stimuli, while keeping key features of skin such as low thickness, stretchability, flexibility, and conformability. One of the most important stimuli to be detected is pressure due to its relevance in a plethora of applications, from health monitoring to functional prosthesis, robotics, and human-machine-interfaces (HMI). The performance of these e-skin pressure sensors is tailored, typically through micro-structuring techniques (such as photolithography, unconventional molds, incorporation of naturally micro-structured materials, laser engraving, amongst others) to achieve high sensitivities (commonly above 1 kPa−1), which is mostly relevant for health monitoring applications, or to extend the linearity of the behavior over a larger pressure range (from few Pa to 100 kPa), an important feature for functional prosthesis. Hence, this review intends to give a generalized view over the most relevant highlights in the development and micro-structuring of e-skin pressure sensors, while contributing to update the field with the most recent research. A special emphasis is devoted to the most employed pressure transduction mechanisms, namely capacitance, piezoelectricity, piezoresistivity, and triboelectricity, as well as to materials and novel techniques more recently explored to innovate the field and bring it a step closer to general adoption by society.

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“…Conducting polymers and various hetero-composites based on CPs can be designed by many different methods; therefore, their conductivity and many other physical properties of these polymers can be well adapted [ 11 ]. Consequently, conductive nanosized polymeric materials have become important elements in the application of high-performance pressure-converters [ 20 ]. They have unique properties related to the high surface area, small dimensions, and large interaction possibilities [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Conducting Polymers for the Design of Tactile Sensors

et al. 2022

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This paper provides an overview of the application of conducting polymers (CPs) used in the design of tactile sensors. While conducting polymers can be used as a base in a variety of forms, such as films, particles, matrices, and fillers, the CPs generally remain the same. This paper, first, discusses the chemical and physical properties of conducting polymers. Next, it discusses how these polymers might be involved in the conversion of mechanical effects (such as pressure, force, tension, mass, displacement, deformation, torque, crack, creep, and others) into a change in electrical resistance through a charge transfer mechanism for tactile sensing. Polypyrrole, polyaniline, poly(3,4-ethylenedioxythiophene), polydimethylsiloxane, and polyacetylene, as well as application examples of conducting polymers in tactile sensors, are overviewed. Attention is paid to the additives used in tactile sensor development, together with conducting polymers. There is a long list of additives and composites, used for different purposes, namely: cotton, polyurethane, PDMS, fabric, Ecoflex, Velostat, MXenes, and different forms of carbon such as graphene, MWCNT, etc. Some design aspects of the tactile sensor are highlighted. The charge transfer and operation principles of tactile sensors are discussed. Finally, some methods which have been applied for the design of sensors based on conductive polymers, are reviewed and discussed.

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High-Performance Pressure Sensor for Monitoring Mechanical Vibration and Air Pressure

Cited by 10 publications

References 41 publications

Progress in Microtopography Optimization of Polymers-Based Pressure/Strain Sensors

Progress in Microtopography Optimization of Polymers-Based Pressure/Strain Sensors

Transduction Mechanisms, Micro-Structuring Techniques, and Applications of Electronic Skin Pressure Sensors: A Review of Recent Advances

Conducting Polymers for the Design of Tactile Sensors

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