Numerical analysis of piezoelectric and mechanical response of buckled poly(vinylidene fluoride) nanofibers for the design of highly stretchable electronics

Xie, Tian; Liu, Qingjie; Xue, Guilan; Gou, Xue

doi:10.1007/s10853-020-04791-4

Cited by 8 publications

(11 citation statements)

References 33 publications

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“…Cell spreading was simplified as a square with a side length of L , and four traction forces ( F ) that directed to the center of the cell were applied to the membrane through small areas (0.25 μm 2 for each). The piezoelectric performance of PVDF was calculated by the piezoelectric constitutive equation with standard parameters as listed in our previous work . The polarization direction of the material was set along the x -axis, which was coordinate with the polarization direction in our sample fabrication process.…”

Section: Resultsmentioning

confidence: 99%

“…The piezoelectric potential generated from cell adhesion on the piezoelectric PVDF membrane was numerically investigated by COMSOL Multiphysics. The piezoelectric performance was calculated by the piezoelectric constitutive equation with typical PVDF parameters listed in our previous paper . These membranes are discretized by ultra-fine mesh elements, and the surrounding end faces of the PVDF film were set as infinite element domains.…”

Section: Methodsmentioning

confidence: 99%

“…The piezoelectric performance of PVDF was calculated by the piezoelectric constitutive equation with standard parameters as listed in our previous work. 35 The polarization direction of the material was set along the x-axis, which was coordinate with the polarization direction in our sample fabrication process. As a boundary condition, the surrounding end faces of the PVDF film were set as infinite element domains.…”

Section: Evaluation Of Cytoskeleton and Focal Adhesion Of Mesenchymal...mentioning

confidence: 99%

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Cell Adhesion-Mediated Piezoelectric Self-Stimulation on Polydopamine-Modified Poly(vinylidene fluoride) Membranes

Xue

Zhang

Xie

et al. 2021

ACS Appl. Mater. Interfaces

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Cell adhesion-mediated piezoelectric stimulation provides a noninvasive method for in situ electrical regulation of cell behavior, offering new opportunities for the design of smart materials for tissue engineering and bioelectronic medicines. In particular, the surface potential is mainly dominated by the inherent piezoelectricity of the biomaterial and the dynamic adhesion state of cells. The development of an efficient and optimized material interface would have important implications in cell regulation. Herein, we modified the surface of poled poly(vinylidene fluoride) (PVDF) membranes through polymerization of dopamine and investigated their influence on cell adhesion and electromechanical self-stimulation. Our results demonstrated that mesenchymal stem cells seeded on the poled PVDF membrane exhibited stronger cell spreading and adhesion. Meanwhile, the surface modification through polydopamine significantly improved the hydrophilicity of the samples and contributed to the formation of cell actin bundles and maturation of focal adhesions, which further positively modulated cell piezoelectric self-stimulation and induced intracellular calcium transients. Combining with theoretical simulations, we found that the self-stimulation was enhanced mainly due to the increase of the adhesion site and adhesion force magnitude. These findings provide new insights for probing the cell regulation mechanism on piezoelectric substrates, offering more opportunities for the rational design of piezoelectric biomaterial interfaces for biomedical engineering.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Evaluation Of Cytoskeleton and Focal Adhesion Of Mesenchymal...mentioning

confidence: 99%

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Cell Adhesion-Mediated Piezoelectric Self-Stimulation on Polydopamine-Modified Poly(vinylidene fluoride) Membranes

Xue

Zhang

Xie

et al. 2021

ACS Appl. Mater. Interfaces

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“…The flexible wearable devices, an unobtrusive sensing interface with the human body, have already become a key tool for capturing human physiological parameters [ 1 , 2 , 3 , 4 ]. Recently, developing flexible wearable devices has focused on improving the softness, breathability and stability [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

A Soft Wearable and Fully-Textile Piezoresistive Sensor for Plantar Pressure Capturing

et al. 2021

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The trends of wearable health monitoring systems have led to growing demands for gait-capturing devices. However, comfortability and durability under repeated stress are still challenging to achieve in existing sensor-enabled footwear. Herein, a flexible textile piezoresistive sensor (TPRS) consisting of a reduced graphene oxide (rGO)-cotton) fabric electrode and an Ag fabric circuit electrode is proposed. Based on the mechanical and electrical properties of the two fabric electrodes, the TPRS exhibits superior sensing performance, with a high sensitivity of 3.96 kPa-1 in the lower pressure range of 0–36 kPa, wide force range (0–100 kPa), fast response time (170 ms), remarkable durability stability (1000 cycles) and detection ability in different pressures ranges. For the prac-tical application of capturing plantar pressure, six TPRSs were mounted on a flexible printed circuit board and integrated into an insole. The dynamic plantar pressure distribution during walking was derived in the form of pressure maps. The proposed fully-textile piezoresistive sensor is a strong candidate for next-generation plantar pressure wearable monitoring devices.

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“…Flexible wearable device, an unobtrusive sensing interface with the human body, has already become a key tool for capturing human physiological parameters [1][2][3][4]. Recently the trend of exible wearable device has been focused on improving the performance of softness, breathability and stability [5].…”

Section: Introductionmentioning

confidence: 99%

A Soft Wearable and Full Textile Piezoresistive Sensor for Plantar Pressure Capturing

Tan

Ivanov

Mei

et al. 2020

Preprint

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The trends of health wearable monitoring system have led to growing demands for gait capturing device. The comfortability and durability under repeated stress in the existing sensor-enabled footwear are still problems. Herein, a flexible textile piezoresistive sensor (TPRS) consisting of rG-cotton fabric electrode and Ag fabric circuit electrode is prepared. Based on the mechanical and electrical properties of two fabric electrodes, the TPRS exhibits superior sensing performance, which includes high sensitivity of 3.96kPa-1 in the lower pressure range of 0-36kPa, wide force range (0-800 kPa), fast response time (170 ms), remarkable durability stability (1000 cycles) and dection ability in differrent pressures. For practical application of capturing plantar pressure, six TPRSs are mounted on a flexible printed circuit board and integrated into an insole. The dynamic plantar pressure distribution is displayed through drawing the pressure maps during walking. The proposed full textile piezoresistive sensor is a strong candidate for next-generation plantar pressure wearables monitoring device.

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Numerical analysis of piezoelectric and mechanical response of buckled poly(vinylidene fluoride) nanofibers for the design of highly stretchable electronics

Cited by 8 publications

References 33 publications

Cell Adhesion-Mediated Piezoelectric Self-Stimulation on Polydopamine-Modified Poly(vinylidene fluoride) Membranes

Cell Adhesion-Mediated Piezoelectric Self-Stimulation on Polydopamine-Modified Poly(vinylidene fluoride) Membranes

A Soft Wearable and Fully-Textile Piezoresistive Sensor for Plantar Pressure Capturing

A Soft Wearable and Full Textile Piezoresistive Sensor for Plantar Pressure Capturing

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