Piezoelectricity in polyvinylidenefluoride

Sessler, G. M.

doi:10.1121/1.387225

Cited by 380 publications

(142 citation statements)

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“…to operate under extreme conditions of high strain and vibration environments. Flexible organic ferroelectric films have been demonstrated 6 and may find applications in specific cases. On the other hand, an integration of oxide-based ferroelectric films with flexible metal substrates offers other opportunities for applications since oxide-based ferroelectric materials exhibit much improved ferroelectric and dielectric properties at high temperature.…”

mentioning

confidence: 99%

Magnetoelectric properties of flexible BiFeO3/Ni tapes

Li¹,

Zhuo²,

Yao³

et al. 2012

Applied Physics Letters

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mentioning

confidence: 99%

Magnetoelectric properties of flexible BiFeO3/Ni tapes

Li¹,

Zhuo²,

Yao³

et al. 2012

Applied Physics Letters

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“…Both extrusion and poling of PVDF fibres was carried out in a single continuous process, called as in-line poling on an existing melt extruder line. In other studies reported in the literature the poling process was performed separately outside the extrusion process [15] [16].…”

Section: Production Of Piezoelectric Pvdf Fibrementioning

confidence: 99%

Continuous production of piezoelectric PVDF fibre for e-textile applications

Hadimani

Bayramol

Sion

et al. 2013

Smart Mater. Struct.

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Polymers have been widely used as piezoelectric materials in the form of films and bulk materials but there are limited publications on piezoelectric fibre structures. In this paper the process of preparing piezoelectric polyvinylidene fluoride (PVDF) fibres from granules by continuous melt extrusion and in-line poling is reported for the first time. The poling of PVDF fibres was carried out at an extension ratio of 4:1, a temperature of 80 •C and a high voltage of the order of 13 000 V on a 0.5 mm diameter fibre in a melt extruder. The entire process of making PVDF fibres from granules and poling them to make piezoelectric fibres was carried out in a continuous process using a customized melt extruder. The prepared piezoelectric fibres were then tested using an impact test rig to show the generation of voltage upon application of an impact load. PVDF granules, unpoled fibres and poled fibres were examined by Fourier transform infrared spectroscopy (FTIR) which showed the presence of β phase in the poled fibres. The ultimate tensile stress and strain, Young's modulus and microstructures of poled and unpoled fibres were investigated using a scanning electron microscope (SEM). Abstract. Polymers have been widely used as piezoelectric materials in the form of films and bulk materials but there are limited publications on piezoelectric fibre structures. In this paper the process of preparing piezoelectric Polyvinylidene Fluoride (PVDF) fibres from granules by continuous melt extrusion and in-line poling is reported for the first time. The poling of PVDF fibres was carried at an extension ratio of 4:1, temperature of 80 °C and high voltage of the order of 13000 V on a 0.5mm diameter fibre in a melt extruder. The entire process of making PVDF fibres from granules and poling them to make piezoelectric fibres was carried out in a continuous process using a customised melt extruder. The prepared piezoelectric fibres were then tested using an impact test rig to show the generation of voltage upon application of an impact load. PVDF granules, unpoled fibres and poled fibres were examined by Fourier Transform Infrared Spectroscopy (FTIR) which shows the presence of β phase in the poled fibres. The ultimate tensile stress and strain, Young's modulus and microstructures of poled and unpoled fibres were investigated using a scanning electron microscope (SEM).

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“…Since photoacoustic CT imaging requires custom transducer arrangement, which in turn leads to a dedicated photoacoustic imaging system, greater control over photoacoustic data acquisition can be exercised and time-dependent radiofrequency (containing amplitude, phase, transients, increasing signal-to-noise ratio and improving image quality (14). Typically, photoacoustic signals from biologic absorbers contain frequencies in the range of 1-10 MHz (15), and a broadband US transducer fabricated with polyvinylidene fluoride is more appropriate for photoacoustic imaging compared with lead zirconate titanate transducers conventionally used in clinical US systems (16).…”

Section: Review: Photoacoustic Imaging In Oncologymentioning

confidence: 99%