Fundamentals of Piezoelectric Sensorics

Tichý, Jan; Erhart, Jiřı́; Kittinger, Erwin; Přívratská, Jana

doi:10.1007/978-3-540-68427-5

Cited by 193 publications

(87 citation statements)

References 129 publications

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“…The typical power provided by the flexible MFC film ranges between 4 mJ/s and 13 mJ/s at 10 Hz excitation with an acceleration of 1 G, and strain of 800 ppm [30]. In these studies, MFC chips were employed for comparing and evaluating the power outputs; MFC is characterized by high piezoelectric coefficients (d 33 ), high permittivity (ε), high dielectric losses, and low mechanical quality factors [31][32][33]. The typical properties of MFC and PZT-5H are provided in Table 1.…”

Section: Theorymentioning

confidence: 99%

Energy Harvesting Based on a Novel Piezoelectric 0.7PbZn0.3Ti0.7O3-0.3Na2TiO3 Nanogenerator

et al. 2017

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Abstract:Recently, piezoelectric materials have achieved remarkable attention for charging wireless sensor nodes. Among piezoelectric materials, non-ferroelectric materials are more cost effective because they can be prepared without a polarization process. In this study, a non-ferroelectric nanogenerator was manufactured from 0.7PbZn 0.3 Ti 0.7 O 3 -0.3Na 2 TiO 3 (PZnT-NT). It was demonstrated that the increment of conductivity via adding the Na 2 TiO 3 plays an essential role in increasing the permittivity of the non-ferroelectric nanogenerator and hence improved the generated power density. The dielectric measurements of this material demonstrated high conductivity that quenched the polarization phase. The performance of the device was studied experimentally over a cantilever test rig; the vibrating cantilever (0.4 ms −2 ) was excited by a motor operated at 30 Hz. The generated power successfully illuminated a light emitting diode (LED). The PZnT-NT nanogenerator produced a volume power density of 0.10 µw/mm 3 and a surface power density of 10 µw/cm 2 . The performance of the proposed device with a size of (20 × 15 × 1 mm 3 ) was higher in terms of power output than that of the commercial microfiber composite (MFC) (80 × 57 × 0.335 mm 3 ) and piezoelectric bimorph device (70 × 50 × 0.7 mm 3 ). Compared to other existing ferroelectric and non-ferroelectric nanogenerators, the proposed device demonstrated great performance in harvesting the energy at low acceleration and in a low frequency environment.

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Section: Theorymentioning

confidence: 99%

Energy Harvesting Based on a Novel Piezoelectric 0.7PbZn0.3Ti0.7O3-0.3Na2TiO3 Nanogenerator

et al. 2017

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“…Compression of a piezo [2] ceramic causes an electrical displacement within the piezo crystal that can be measured as an electrical potential. If an electrical field is applied to the piezo crystal, it expands by up to 0.1% of its length.…”

Section: Basic Principles Of Piezo Actuators 21 Inverse Piezo Electrmentioning

confidence: 99%

New experimental methods for investigating variable amplitude loading effects in HCF and VHCF regimes

Wagener¹,

Melz

Fischer

et al. 2011

Materialwissenschaft Werkst

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For the investigation of variable amplitude loading effects, it is necessary to increase the test frequency of conventional testing facilities because, for the evaluation of many components, test results with more than 107 cycles are also needed. However, due to the restriction of conventional testing facilities and the associated costs and required time, variable amplitude testing is almost limited to 107 cycles. Service loading with more than 107 cycles to failure is characterized by low amplitudes with a high number of cycles. The challenge in investigation of material fatigue in the regimes of high cycle and very high cycle fatigue is to apply this large number of cycles to failure in an acceptable time frame. For this reason, it is essential to use a machine, which is able to operate at high frequencies. In this paper, two testing machine concepts with piezo actuators are presented. In the first concept, a high performance piezo stack actuator is presented, in whic h the specimen and the load cell are mechanically assembled in series. This set-up applies forces up to 10 kN and testing frequencies up to 1000 Hz. The second testing facility is a hybrid testing system, which consists of an inertial mass actuator and a servo hydraulic actuator connected in parallel. Both systems are capable of testing normal specimen dimensions and provide the possibility to work with variable amplitude loading as well as constant amplitude loading

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“…This phenomenon is observed when a mechanical deformation of a piezoelectric material produces a change in the electric polarization of that material, i.e., electric charge appears on certain opposite faces of the piezoelectric material when it is mechanically loaded [37,38]. Properties of piezoelectric materials are defined by means of several parameters, among others, by a piezoelectric charge constant (d) and piezoelectric voltage constant (g).…”

Section: Piezoelectric Transducersmentioning

confidence: 99%

Analog Front-End Circuitry in Piezoelectric and Microphone Detection of Photoacoustic Signals

Starecki

2014

Int J Thermophys

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This paper is a review of analog front-end circuitry used in photoacoustic equipment with microphone or piezoelectric detection. A block structure of the front end as well as detailed circuit diagrams of preamplifiers dedicated for piezoelectric sensors and measurement condenser and electret microphones are described. The presented circuits are optimized toward low-noise operation. Practical remarks regarding the design of the remaining analog blocks are also given. The analysis shows that it is possible to design an analog front end for which specifications will be comparable with the best commercial solutions.

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Fundamentals of Piezoelectric Sensorics

Cited by 193 publications

References 129 publications

Energy Harvesting Based on a Novel Piezoelectric 0.7PbZn0.3Ti0.7O3-0.3Na2TiO3 Nanogenerator

Energy Harvesting Based on a Novel Piezoelectric 0.7PbZn0.3Ti0.7O3-0.3Na2TiO3 Nanogenerator

New experimental methods for investigating variable amplitude loading effects in HCF and VHCF regimes

Analog Front-End Circuitry in Piezoelectric and Microphone Detection of Photoacoustic Signals

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