Aligned electrospun PVDF-TrFE nanofibers for flexible pressure sensors on catheter

Sharma, Tushar; Langevine, Jewel; Naik, Sahil; Aroom, Kevin R.; Gill, Brijesh S.; Zhang, John X. J.

doi:10.1109/transducers.2013.6626793

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…PVDF has been studied recently as a sensing element in endovascular catheters due to its flexibility, stretchability, and biocompatibility. [101][102][103][104][105] In a notable example, [105] PVDF-TrFE core-shell nanofibers are fabricated using poly(3,4-ethylenedioxythiophene) (PEDOT) (a conducting polymer) as a core and PVDF-TrFE as a shell (Figure 5a). A thin film of copper is deposited to create the external electrode.…”

Section: Catheter Applicationsmentioning

confidence: 99%

Piezoelectric Biomaterials for Sensors and Actuators

et al. 2018

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Recent advances in materials, manufacturing, biotechnology, and microelectromechanical systems (MEMS) have fostered many exciting biosensors and bioactuators that are based on biocompatible piezoelectric materials. These biodevices can be safely integrated with biological systems for applications such as sensing biological forces, stimulating tissue growth and healing, as well as diagnosing medical problems. Herein, the principles, applications, future opportunities, and challenges of piezoelectric biomaterials for medical uses are reviewed thoroughly. Modern piezoelectric biosensors/bioactuators are developed with new materials and advanced methods in microfabrication/encapsulation to avoid the toxicity of conventional lead‐based piezoelectric materials. Intriguingly, some piezoelectric materials are biodegradable in nature, which eliminates the need for invasive implant extraction. Together, these advancements in the field of piezoelectric materials and microsystems can spark a new age in the field of medicine.

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Section: Catheter Applicationsmentioning

confidence: 99%

Piezoelectric Biomaterials for Sensors and Actuators

et al. 2018

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“…Highly aligned fibers were manufactured to boost the device. This electrode provides information about the sensitivity of the structures [ 142 ].…”

Section: Organic Piezoelectric Materialsmentioning

confidence: 99%

Progress in the Applications of Smart Piezoelectric Materials for Medical Devices

2020

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Smart piezoelectric materials are of great interest due to their unique properties. Piezoelectric materials can transform mechanical energy into electricity and vice versa. There are mono and polycrystals (piezoceramics), polymers, and composites in the group of piezoelectric materials. Recent years show progress in the applications of piezoelectric materials in biomedical devices due to their biocompatibility and biodegradability. Medical devices such as actuators and sensors, energy harvesting devices, and active scaffolds for neural tissue engineering are continually explored. Sensors and actuators from piezoelectric materials can convert flow rate, pressure, etc., to generate energy or consume it. This paper consists of using smart materials to design medical devices and provide a greater understanding of the piezoelectric effect in the medical industry presently. A greater understanding of piezoelectricity is necessary regarding the future development and industry challenges.

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“…With the rapid development of electrospinning technology, the highly aligned nanofibers of P (VDF-TrFE) have been successfully fabricated on flexible substrates by one step and have been used for pressure sensors [ 115 ]. The tested results show that the device could produce 300 mV signals with a recovery time of 0.45 s on manual mechanical deformation.…”

Section: Polyvinylidene Fluoride Co-polymer: Poly(vinylidene Fluormentioning

confidence: 99%

Tactile-Sensing Based on Flexible PVDF Nanofibers via Electrospinning: A Review

Wang

Sun

Yin

et al. 2018

Sensors

190

134

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The flexible tactile sensor has attracted widespread attention because of its great flexibility, high sensitivity, and large workable range. It can be integrated into clothing, electronic skin, or mounted on to human skin. Various nanostructured materials and nanocomposites with high flexibility and electrical performance have been widely utilized as functional materials in flexible tactile sensors. Polymer nanomaterials, representing the most promising materials, especially polyvinylidene fluoride (PVDF), PVDF co-polymer and their nanocomposites with ultra-sensitivity, high deformability, outstanding chemical resistance, high thermal stability and low permittivity, can meet the flexibility requirements for dynamic tactile sensing in wearable electronics. Electrospinning has been recognized as an excellent straightforward and versatile technique for preparing nanofiber materials. This review will present a brief overview of the recent advances in PVDF nanofibers by electrospinning for flexible tactile sensor applications. PVDF, PVDF co-polymers and their nanocomposites have been successfully formed as ultrafine nanofibers, even as randomly oriented PVDF nanofibers by electrospinning. These nanofibers used as the functional layers in flexible tactile sensors have been reviewed briefly in this paper. The β-phase content, which is the strongest polar moment contributing to piezoelectric properties among all the crystalline phases of PVDF, can be improved by adjusting the technical parameters in electrospun PVDF process. The piezoelectric properties and the sensibility for the pressure sensor are improved greatly when the PVDF fibers become more oriented. The tactile performance of PVDF composite nanofibers can be further promoted by doping with nanofillers and nanoclay. Electrospun P(VDF-TrFE) nanofiber mats used for the 3D pressure sensor achieved excellent sensitivity, even at 0.1 Pa. The most significant enhancement is that the aligned electrospun core-shell P(VDF-TrFE) nanofibers exhibited almost 40 times higher sensitivity than that of pressure sensor based on thin-film PVDF.

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Aligned electrospun PVDF-TrFE nanofibers for flexible pressure sensors on catheter

Cited by 9 publications

References 6 publications

Piezoelectric Biomaterials for Sensors and Actuators

Piezoelectric Biomaterials for Sensors and Actuators

Progress in the Applications of Smart Piezoelectric Materials for Medical Devices

Tactile-Sensing Based on Flexible PVDF Nanofibers via Electrospinning: A Review

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