Recent Progress in Flexible Pressure Sensor Arrays

Duan, Yanhao; He, Shixue; Wu, Jian; Su, Benlong; Wang, Youshan

doi:10.3390/nano12142495

Cited by 48 publications

(19 citation statements)

References 122 publications

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“…The results are presented in Figure g–i. Therefore, it is shown that the self-powered pressure sensor developed in this study has potential applications in health and activity monitoring (e.g., gait monitoring) by measuring the pressure distribution in the insole. , …”

Section: Resultsmentioning

confidence: 99%

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO₃

Mirjalali,

Bagherzadeh,

Mahdavi Varposhti

et al. 2023

ACS Appl. Mater. Interfaces

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Over the past few decades, flexible piezoelectric devices have gained increasing interest due to their wide applications as wearable sensors and energy harvesters. Poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE), as one of piezoelectric polymers, has caught considerable attention because of its high flexibility, high thermal stability, and biocompatibility. However, its relatively lower piezoelectricity limits its broader applications. Herein, we present a new approach to improving the piezoelectricity of PVDF-TrFE nanofibers by integrating barium titanate (BTO) nanoparticles. Instead of being directly dispersed into PVDF-TrFE nanofibers, the BTO nanoparticles were electrosprayed between the nanofiber layers to create a sandwich structure. The results showed that the sample with BTO sandwiched between PVDF-TrFE nanofibers showed a much higher piezoelectric output compared to the sample with BTO uniformly dispersed in the nanofibers, with a maximum of ∼ 457% enhancement. Simulation results suggested that the enhanced piezoelectricity is due to the larger strain induced in the BTO nanoparticles in the sandwich structure. Additionally, BTO might be better poled during electrospraying with higher field strength, which is also believed to contribute to enhanced piezoelectricity. The potential of the piezoelectric nanofiber mats as a sensor for measuring biting force and as a sensor array for pressure mapping was demonstrated.

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Section: Resultsmentioning

confidence: 99%

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO₃

Mirjalali,

Bagherzadeh,

Mahdavi Varposhti

et al. 2023

ACS Appl. Mater. Interfaces

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“…Flexible strain/pressure sensors have various fields of application [ 119 ]. We did not intend to review all the relevant works in this subsection.…”

Section: Flexible Strain/pressure Sensorsmentioning

confidence: 99%

An Overview of Flexible Sensors: Development, Application, and Challenges

Liu

Zhang

et al. 2023

Sensors

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The emergence and advancement of flexible electronics have great potential to lead development trends in many fields, such as “smart electronic skin” and wearable electronics. By acting as intermediates to detect a variety of external stimuli or physiological parameters, flexible sensors are regarded as a core component of flexible electronic systems and have been extensively studied. Unlike conventional rigid sensors requiring costly instruments and complicated fabrication processes, flexible sensors can be manufactured by simple procedures with excellent production efficiency, reliable output performance, and superior adaptability to the irregular surface of the surroundings where they are applied. Here, recent studies on flexible sensors for sensing humidity and strain/pressure are outlined, emphasizing their sensory materials, working mechanisms, structures, fabrication methods, and particular applications. Furthermore, a conclusion, including future perspectives and a short overview of the market share in this field, is given for further advancing this field of research.

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“…The basic sensing mechanism of pressure sensors is converting the change of physical pressure into electrical signals, and the transduction can be carried out in different forms, e.g., piezoresistivity, piezoelectricity, triboelectricity and capacitance [ 183 ]. Taking the piezoresistive pressure sensor as an example, it suggests that the applied pressure will change the size of the contact area, thus causing the change of the resistance value [ 184 ].…”

Section: Sensing With Carbon Materialsmentioning

confidence: 99%

Flexible and Stretchable Carbon-Based Sensors and Actuators for Soft Robots

Zhou

Cao

2023

Nanomaterials

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In recent years, the emergence of low-dimensional carbon-based materials, such as carbon dots, carbon nanotubes, and graphene, together with the advances in materials science, have greatly enriched the variety of flexible and stretchable electronic devices. Compared with conventional rigid devices, these soft robotic sensors and actuators exhibit remarkable advantages in terms of their biocompatibility, portability, power efficiency, and wearability, thus creating myriad possibilities of novel wearable and implantable tactile sensors, as well as micro-/nano-soft actuation systems. Interestingly, not only are carbon-based materials ideal constituents for photodetectors, gas, thermal, triboelectric sensors due to their geometry and extraordinary sensitivity to various external stimuli, but they also provide significantly more precise manipulation of the actuators than conventional centimeter-scale pneumatic and hydraulic robotic actuators, at a molecular level. In this review, we summarize recent progress on state-of-the-art flexible and stretchable carbon-based sensors and actuators that have creatively added to the development of biomedicine, nanoscience, materials science, as well as soft robotics. In the end, we propose the future potential of carbon-based materials for biomedical and soft robotic applications.

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Recent Progress in Flexible Pressure Sensor Arrays

Cited by 48 publications

References 122 publications

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO₃

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO₃

An Overview of Flexible Sensors: Development, Application, and Challenges

Flexible and Stretchable Carbon-Based Sensors and Actuators for Soft Robots

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Recent Progress in Flexible Pressure Sensor Arrays

Cited by 48 publications

References 122 publications

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO3

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO3

An Overview of Flexible Sensors: Development, Application, and Challenges

Flexible and Stretchable Carbon-Based Sensors and Actuators for Soft Robots

Contact Info

Product

Resources

About

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO₃

Enhanced Piezoelectricity of PVDF-TrFE Nanofibers by Intercalating with Electrosprayed BaTiO₃