A flexible capacitive pressure sensor based on an electrospun polyimide nanofiber membrane

Zhu, Yuchao; Wu, Yigen; Wang, Guangshun; Wang, Zhongbao; Tan, Qiulin; Zhao, Libo; Wu, Dezhi

doi:10.1016/j.orgel.2020.105759

Cited by 54 publications

(32 citation statements)

References 45 publications

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“…These sensing features prove the PI nanofibers can be candidates for health monitoring and robotics (intelligence). [445] The electrospun nanofiber based several mechanical sensors are displayed in Table 7.…”

Section: Mechanical Sensorsmentioning

confidence: 99%

Electrospun Nanofibers: Materials, Synthesis Parameters, and Their Role in Sensing Applications

Kailasa

Reddy

Maurya

et al. 2021

Macro Materials & Eng

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Since the last decade, electrospinning is garnering more attention in the scientific research community, industries, applications like sensing (glucose, H 2 O 2 , dopamine, ascorbic acid, uric acid, neurotransmitter, etc.), biomedical applications (wound dressing, wound healing, skin, nerve, bone tissue engineering, and drug delivery systems), water treatment, energy harvesting, and storage applications. This review paper provides a brief overview of the electrospinning method, history of the electrospinning, factors affecting the electrospun nanofibers, and their morphology with different materials and composites (metals, metal oxides, 2D material, polymers and copolymers, carbon-based materials, etc.) used in the electrospinning technique with optical spinning parameters. Moreover, this paper deliberates the application of electrospun nanofibers and fibrous mats for sensing (electrochemical, optical, fluorescence, colorimetric, mechanical, photoelectric, mass sensitive change, resistive, ultrasensitive, etc.) in most illustrative representations. In the end, the challenges, opportunities of the electrospun nanofibers, and new direction for future progress are also discussed.

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Section: Mechanical Sensorsmentioning

confidence: 99%

Electrospun Nanofibers: Materials, Synthesis Parameters, and Their Role in Sensing Applications

Kailasa

Reddy

Maurya

et al. 2021

Macro Materials & Eng

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“…For improving the flexibility and wearability of the capacitive sensors, polymer elastomers, including polydimethylsiloxane (PDMS) [18], polyethylene terephthalate (PET) [19], polyimide (PI) [20], polyvinyl alcohol (PVA) [21], Eco-flex, and polyvinylidene fluoride (PVDF) [22,23], are often used to prepare the flexible electrodes and dielectric layers [24,25]. However, their pressure sensitivity performance still needs further improvement.…”

Section: Introductionmentioning

confidence: 99%

All-Fabric-Based Flexible Capacitive Sensors with Pressure Detection and Non-Contact Instruction Capability

Tian

et al. 2022

Coatings

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The flexible and wearable capacitive sensors have captured tremendous interest due to their enormous potential for healthcare monitoring, soft robotics, and human−computer interface. However, despite recent progress, there are still pressing challenges to develop a fully integrated textile sensor array with good comfort, high sensitivity, multisensing capabilities, and ultra-light detection. Here, we demonstrate a pressure and non-contact bimodal fabric-only capacitive sensor with highly sensitive and ultralight detection. The graphene nanoplatelets-decorated multidimensional honeycomb fabric and nickel-plated woven fabric serve as the dielectric layer and electrode, respectively. Our textile-only capacitive bimodal sensor exhibits an excellent pressure-sensing sensitivity of 0.38 kPa−1, an ultralow detection limit (1.23 Pa), and cycling stability. Moreover, the sensor exhibits superior non-contact detection performance with a detection distance of 15 cm and a maximum relative capacitance change of 10%. The sensor can successfully detect human motion, such as finger bending, saliva swallowing, etc. Furthermore, a 4 × 4 (16 units) textile-only capacitive bimodal sensor array was prepared and has excellent spatial resolution and response performance, showing great potential for the wearable applications.

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“…Force and pressure sensors are needed in a variety of different fields, for example, in industrial or medical devices [1] or in seats and furniture [2,3]. Many of these sensors rely on electrical effects such as capacitance (e.g., [4][5][6][7]) or piezo-resistance (e.g., [8][9][10][11]). These methods are robust but can only be used in certain applications and environments.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fibre Cross-Coupling Mechanisms in Fibre-Optical Force Sensors

Bunge

Kallweit

Colakoglu

et al. 2021

Sensors

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The force-enhanced light coupling between two optical fibres is investigated for the application in a pressure or force sensor, which can be arranged into arrays and integrated into textile surfaces. The optical coupling mechanisms such as the influence of the applied force, the losses at the coupling point and the angular alignment of the two fibres are studied experimentally and numerically. The results reveal that most of the losses occur at the deformation of the pump fibre. Only a small percentage of the cross-coupled light from the pump fibre is actually captured by the probe fibre. Thus, the coupling and therefore the sensor signal can be strongly increased by a proper crossing angle between the fibres, which lead to a coupling efficiency of 3%, a sensitivity improvement of more than 20 dB compared to the orthogonal alignment of the two fibres.

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A flexible capacitive pressure sensor based on an electrospun polyimide nanofiber membrane

Cited by 54 publications

References 45 publications

Electrospun Nanofibers: Materials, Synthesis Parameters, and Their Role in Sensing Applications

Electrospun Nanofibers: Materials, Synthesis Parameters, and Their Role in Sensing Applications

All-Fabric-Based Flexible Capacitive Sensors with Pressure Detection and Non-Contact Instruction Capability

Analysis of Fibre Cross-Coupling Mechanisms in Fibre-Optical Force Sensors

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