Search results for "Piezoelectric sensor"

showing 3 items of 23 documents

New high piezoelectric coupling PLuNT binary system ceramics

1999

Abstract The new (1 − x)Pb( Lu 1 2 Nb 1 2 ) O 3 − x PbTiO 3 binary system ceramics in the interval 0 0.49). The morphotropic region extends over the interval x = 0.38–0.49, the concentration ratio M:T ≅ 1 corresponds to x = 0.41. The maximum values of the electromechanical coupling coefficients k p = 0.663, k t = 0.481, k 31 = 0.355 of (1 − x)PLuN-xPT ceramics were attained in compositions PLuNT 59/41 (T m = 353 °C) near the morphotropic phase boundary (MPB). The PLuNT system, having large values of electromechanical coupling and the highest T m (> 350 °C) among binary Pb(B′,B″)O 3 -PT perovskites may be favorable for piezoelectric sensors and actuators, and may have an interest as promisin…

Phase boundaryMaterials sciencePiezoelectric sensorAnalytical chemistryCondensed Matter PhysicsConcentration ratiovisual_artvisual_art.visual_art_mediumGeneral Materials ScienceBinary systemCeramicThin filmPiezoelectric couplingSingle crystalNanostructured Materials
researchProduct

Piezoelectric model of rainfall energy harvester

2014

In this paper a model to predict the harvest of the energy contained in rainfall by means of piezoelectric transducers is presented. Different studies agree on the level of suitable generated voltage on the electrodes of a piezoelectric transducer subjected to rainfall, but a complete characterization on the supplied power is still missing. This work, in order to limit optimistic forecasts, compares the behavior of the transducers subjected to real and artificial rainfall, a condition that has shown promising behavior in laboratory.

Piezoelectric coefficientPiezoelectric accelerometerPiezoelectric sensorAcousticsenergy harvester piezoelectric effectSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPiezoelectricitySettore ING-INF/01 - ElettronicaPower (physics)Settore ING-IND/31 - ElettrotecnicaTransducerPMUTEnvironmental scienceSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
researchProduct

Self-cleaning ZnO/ITO/PET Bending Sensors

2022

The design of multifunctional materials is of pivotal importance for developing wearable biosensors. In particular, the advancement in self-cleaning materials suitable for bending sensors, i.e. devices able to track human body movements for healthcare monitoring [1], has raised much interest in recent pandemic times. Such technology can be facilitated by leveraging piezo-photocatalytic cleaning effects under visible light [2]. Herein, we show a new class of ZnO-based nanosheets (NSs) synthesized in aqueous solution (85 °C, 24 hours) onto seeded or seedless ITO/PET surfaces that couple sensing to photocatalysis. UV-vis and FT-IR spectroscopies show the typical absorption peaks of ZnO. A nano…

piezoelectric sensor ZnO self-cleaning surfaceSettore CHIM/01 - Chimica AnaliticaSettore CHIM/02 - Chimica Fisica
researchProduct