Origin of Piezoelectricity in an Electrospun Poly(vinylidene fluoride-trifluoroethylene) Nanofiber Web-Based Nanogenerator and Nano-Pressure Sensor

2011 ◽  
Vol 32 (11) ◽  
pp. 831-837 ◽  
Author(s):  
Dipankar Mandal ◽  
Sun Yoon ◽  
Kap Jin Kim
Keyword(s):  
Pressure Sensor ◽  
Vinylidene Fluoride ◽  
Web Based ◽  
Poly Vinylidene Fluoride ◽  
Nanofiber Web

scholarly journals Enhancement of β-Phase Crystal Content of Poly(vinylidene fluoride) Nanofiber Web by Graphene and Electrospinning Parameters

2020 ◽  
Vol 38 (11) ◽  
pp. 1239-1247 ◽  
Author(s):  
Lu Jin ◽  
Yan Zheng ◽  
Ze-Kun Liu ◽  
Jia-Shen Li ◽  
Yang-Pei-Qi Yi ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Β Phase ◽  
Phase Crystal ◽  
Poly Vinylidene Fluoride ◽  
Nanofiber Web ◽  
Crystal Content

Fabrication of poly (vinylidene fluoride-trifluoroethylene) – Zinc oxide based piezoelectric pressure sensor

2020 ◽  
Vol 303 ◽  
pp. 111677 ◽  
Author(s):  
Subash Cherumannil Karumuthil ◽  
Kulwant Singh ◽  
Uvais Valiyaneerilakkal ◽  
Jamil Akhtar ◽  
Soney Varghese
Keyword(s):  
Zinc Oxide ◽  
Pressure Sensor ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride ◽  
Piezoelectric Pressure Sensor

scholarly journals Highly Sensitive Textile-Based Capacitive Pressure Sensors Using PVDF-HFP/Ionic Liquid Composite Films

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 442
Author(s):  
Kyobin Keum ◽  
Jae Sang Heo ◽  
Jimi Eom ◽  
Keon Woo Lee ◽  
Sung Kyu Park ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Pressure Sensor ◽  
Sensor Array ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Capacitive Pressure Sensor ◽  
Electronic Textiles ◽  
Poly Vinylidene Fluoride

Textile-based pressure sensors have garnered considerable interest in electronic textiles due to their diverse applications, including human–machine interface and healthcare monitoring systems. We studied a textile-based capacitive pressure sensor array using a poly(vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP)/ionic liquid (IL) composite film. By constructing a capacitor structure with Ag-plated conductive fiber electrodes that are embedded in fabrics, a capacitive pressure sensor showing high sensitivity, good operation stability, and a wide sensing range could be created. By optimizing the PVDF-HFP:IL ratio (6.5:3.5), the fabricated textile pressure sensors showed sensitivity of 9.51 kPa−1 and 0.69 kPa−1 in the pressure ranges of 0–20 kPa and 20–100 kPa, respectively. The pressure-dependent capacitance variation in our device was explained based on the change in the contact-area formed between the multi-filament fiber electrodes and the PVDF-HFP/IL film. To demonstrate the applicability and scalability of the sensor device, a 3 × 3 pressure sensor array was fabricated. Due to its matrix-type array structure and capacitive sensing mechanism, multi-point detection was possible, and the different positions and the weights of the objects could be identified.

Piezoelectric β-polymorph formation of new textiles by surface modification with coating process based on interfacial interaction on the conformational variation of poly (vinylidene fluoride) (PVDF) chains

2020 ◽  
Vol 91 (3) ◽  
pp. 31301
Author(s):  
Nabil Chakhchaoui ◽  
Rida Farhan ◽  
Meriem Boutaldat ◽  
Marwane Rouway ◽  
Adil Eddiai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Research Work ◽  
Research Area ◽  
Interfacial Interaction ◽  
Tetraethyl Orthosilicate ◽  
Poly Vinylidene Fluoride ◽  
Carbon Nanofillers ◽  
The Impact ◽  
Advanced Applications

Novel textiles have received a lot of attention from researchers in the last decade due to some of their unique features. The introduction of intelligent materials into textile structures offers an opportunity to develop multifunctional textiles, such as sensing, reacting, conducting electricity and performing energy conversion operations. In this research work nanocomposite-based highly piezoelectric and electroactive β-phase new textile has been developed using the pad-dry-cure method. The deposition of poly (vinylidene fluoride) (PVDF) − carbon nanofillers (CNF) − tetraethyl orthosilicate (TEOS), Si(OCH2CH3)4 was acquired on a treated textile substrate using coating technique followed by evaporation to transform the passive (non-functional) textile into a dynamic textile with an enhanced piezoelectric β-phase. The aim of the study is the investigation of the impact the coating of textile via piezoelectric nanocomposites based PVDF-CNF (by optimizing piezoelectric crystalline phase). The chemical composition of CT/PVDF-CNC-TEOS textile was detected by qualitative elemental analysis (SEM/EDX). The added of 0.5% of CNF during the process provides material textiles with a piezoelectric β-phase of up to 50% has been measured by FTIR experiments. These results indicated that CNF has high efficiency in transforming the phase α introduced in the unloaded PVDF, to the β-phase in the case of nanocomposites. Consequently, this fabricated new textile exhibits glorious piezoelectric β-phase even with relatively low coating content of PVDF-CNF-TEOS. The study demonstrates that the pad-dry-cure method can potentially be used for the development of piezoelectric nanocomposite-coated wearable new textiles for sensors and energy harvesting applications. We believe that our study may inspire the research area for future advanced applications.

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