Piezoelectric polymer films as power converters for human powered electronics

Klimiec, Ewa; Zaraska, W.; Zaraska, Krzysztof; Gąsiorski, K. P.; Sadowski, T; Pajda, M.

doi:10.1016/j.microrel.2008.04.001

Cited by 34 publications

(17 citation statements)

References 5 publications

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“…During selection of the material for the pressure sensors, the authors focused on permanently polarized polymer films: polyethylene -polypropylene (PE -PP) (Klimiec et al, 2008), polypropylene (PP) (Klimiec et al, 2010), polyethylene tereftalate (PET) (Klimiec et al, 2011a) and PVDF (Klimiec et al, 2011b). The main factor considered during the selection is good springiness in the required range of the pressure, because short time of recovery after removing the force, is a very important factor for sensor stability.…”

Section: Selection Of the Pressure Sensors And Its Fixationmentioning

confidence: 99%

Electronic measurement system of foot plantar pressure

Klimiec

Piekarski

Zaraska

et al. 2014

Microelectronics International

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Purpose -This paper aims to present a prototype of the diagnostic system for the examination of the distribution of the force applied by foot to substrate during usual human moving. Presented system is competitive to other currently available devices, thanks to sensors reliability, user-friendly operation manner and design based on cheap parts. The results of examinations are transmitted by radiomodem. Its recording and visualization are possible on either personal or mobile computers. Design/methodology/approach -During selection of the sensors substrate, many polymeric electrets were examined. Polyvinylidene fluoride films were selected, because they have good charge uniformity across the surface, wide range of acceptable temperatures, linear relation between mechanical stress and output signal and high resistance for squeezing. The system measures the charge generated in film. Findings -The pressures are recorded in relation to maximum value; therefore, measuring system does not require calibration. The simultaneous recording of data from all eight sensors allows tracking the signal without distortion. Originality/value -An array of sensors is installed in the shoe insole. The measuring device is fixed to the outer surface of the shoe. Its weight is 75 g. The range of transmission is suitable for examination in the natural environment, outside traditional consulting room. Software is dedicated for analysis of the pressure distribution in every moment of the foot movement. The system is suitable for examination of flat feet, diabetic foot and recovery progress after injures.

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Section: Selection Of the Pressure Sensors And Its Fixationmentioning

confidence: 99%

Electronic measurement system of foot plantar pressure

Klimiec

Piekarski

Zaraska

et al. 2014

Microelectronics International

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“…1-3 Piezoelectric and ferroelectric materials, such as lead zirconate titanate ͑PZT͒, ͑1−x͒ Pb͑Mg 1/3 Nb 2/3 ͒O 3 − xPbTiO 3 ͑PMN-PT͒, BaTiO 3 , ZnO, poly͑vinylidene fluoride͒ ͑PVDF͒, etc., have been intensively studied as effective and efficient building blocks for converting ambient mechanical energy into electricity. [4][5][6][7][8] Based on these materials, a variety of micro-or nanoelectromechanical systems ͑MEMS or NEMS͒ were developed for harvesting energies from random vibrations, mechanical waves, or body movements like walking, running, or typing. [9][10][11][12][13] Recently, a promising concept has been demonstrated by using piezoelectric ZnO nanowires ͑NWs͒ to harvest micro-and nanoscale mechanical energy ͑the nanogenerator͒.…”

Section: Introductionmentioning

confidence: 99%

Fundamental study of mechanical energy harvesting using piezoelectric nanostructures

Sun¹,

Shi²,

Wang³

2010

Journal of Applied Physics

125

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This paper numerically estimates the potential, the output power and the energy conversion efficiency of piezoelectric nanostructures, including rectangular nanowires (NWs), hexagonal NWs, and two-dimensional vertical thin films (the nanofins). Static analysis studies the maximum piezoelectric potential that can be produced by a BaTiO3 NW, a ZnO NW, and a ZnO nanofin when they are subjected to a constant external force. Dynamic analysis is performed to study the power generation ability via the vibration of these nanostructures agitated by ambient vibration energy. ZnO NW and nanofin are selected as two representative nanogenerator elements. Their dynamic responses are modeled using a single-degree of freedom system with a series of damping ratios. Combining the transfer functions of mechanical vibration and piezoelectric charge generation, we define the output power and efficiencies as functions of the vibration frequency and the sizes. The optimal size for constructing a high efficiency and high-power nanogenerator is suggested. The material dependence of a dynamic system is also studied based on different piezoelectric and ferroelectric material systems, including ZnO, BaTiO3, and (1−x)Pb(Mg1/3Nb2/3)O3−xPbTiO3. This research reveals a comprehensive relationship between the mechanical energy harvesting ability and the nanomaterials’ morphologies, dimensions, and properties. It provides a guideline for the design of high-power nanogenerators and the development of piezoelectric nanodevices in general.

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“…When a piezoelectric polymer nanocomposite is utilized in a textile within human body stimulations (heart beating or plunge moving) as a mechanical stimulator, the textile enables energy harvesting (Klimiec et al, 2008). When a piezoelectric polymer nanocomposite is utilized in a textile within human body stimulations (heart beating or plunge moving) as a mechanical stimulator, the textile enables energy harvesting (Klimiec et al, 2008).…”

Section: Applicationsmentioning

confidence: 99%

“…Energy conversion methods were developed due to possible energy transfer from the source to low-power devices within the ambient conditions applied to the material, such as wind or thermal or vibrational energy applied to the material (Cook-Chennault et al, 2008;Beeby et al, 2006;Hudak and Amatucci, 2008) or some other stimuli based on the human body (Klimiec et al, 2008;Yang et al, 2009). Energy conversion methods were developed due to possible energy transfer from the source to low-power devices within the ambient conditions applied to the material, such as wind or thermal or vibrational energy applied to the material (Cook-Chennault et al, 2008;Beeby et al, 2006;Hudak and Amatucci, 2008) or some other stimuli based on the human body (Klimiec et al, 2008;Yang et al, 2009).…”

mentioning

confidence: 99%