Results 61 to 70 of about 1,987,184 (244)

Propagation characteristics of SH wave in an mm2 piezoelectric layer on an elastic substrate

AIP Advances, 2015
We investigate the propagation characteristics of shear horizontal (SH) waves in a structure consisting of an elastic substrate and an mm2 piezoelectric layer with different cut orientations. The dispersion equations are derived for electrically open and
Yanping Kong, Jinxi Liu, Guoquan Nie
doaj   +1 more source

Freestanding Hierarchical-Porous BCZT Thin Films Enable Efficient Ultrasonic Energy Harvesting in Soft Tissue. [PDF]

Adv Sci (Weinh)
Freestanding hierarchical‐porous BCZT thin films integrate a compliant porous surface with a dense piezoceramic backbone to balance mechanical reliability, voltage sensitivity, and acoustic coupling. The films enable stable wearable pulse‐wave monitoring and enhanced tissue‐coupled ultrasonic energy harvesting, offering a promising route toward soft ...
Li Z, Gao S, Hong W, Chen Y, Gu Y, Wang X, Tang C, Hong Y, Li X, Yan X, Zheng Y, Liu Y, Liao J, Wang B, Liu S.   +14 more
europepmc   +2 more sources

Dual-electrode CMUT with non-uniform membranes for high electromechanical coupling coefficient and high bandwidth operation

, 2009
In this paper, we report measurement results on dual-electrode CMUT demonstrating electromechanical coupling coefficient (k(2)) of 0.82 at 90% of collapse voltage as well as 136% 3 dB one-way fractional bandwidth at the transducer surface around the ...
Güldiken, Rasim O., Zahorian, Jaime, Yamaner, Yalçın Feysel, Değertekin, F. Levent   +3 more
core   +1 more source

Atrial electromechanical coupling intervals in pregnant subjects [PDF]

, 2014
Objective: The aim of this study was to evaluate atrial conduction abnormalities obtained by tissue Doppler imaging (TDI) and electrocardiogram analysis in pregnant subjects. Methods: A total of 30 pregnant subjects (28 +/- 4 years) and 30 controls (28 +/
Gungor, Aysenur Cakir, Barutcu, Ahmet, Tasolar, Hakan, Uysal, Ahmet, Altun, Burak, Temiz, Ahmet, Gazi, Emine   +6 more
core   +1 more source

A Constraint‐Based Analytical Framework for Design‐Space Analysis and Material Screening of Tubular Multilayer Dielectric Elastomer Pumps for Extracorporeal Circulatory Applications

Advanced Materials Technologies, EarlyView.
A constraint‐based analytical framework maps the coupled effects of material properties, structural parameters, and operating conditions in tubular dielectric elastomer pumps for extracorporeal circulatory applications. The approach defines performance boundaries through mechanical, electrical, and hydraulic constraints and identifies feasible design ...
Yan Zhang, Amine Benouhiba, Yoan Civet, Yves Perriard   +3 more
wiley   +1 more source

research Paper: Investigation of the Effect of Sm3+ Doping on the Piezoelectric Properties of PIN-PMN-PT Ceramics [PDF]

فیزیک کاربردی ایران
Piezoelectric materials, such as sensors and electromechanical transducers, are widely used in applications related to electromechanical energy conversion. Among piezoelectric materials, the ferroelectric compounds of the Relaxor-PT family have attracted
Hadi Papi, Hassan Ahmadvand, Mohsen Yazdanmehr   +2 more
doaj   +1 more source

Inverse Design of Pre-Strain via a Predictive Electromechanical Model for Enhanced Strain Sensing. [PDF]

Adv Sci (Weinh)
An analytical electromechanical model rooted in microcrack evolution mechanics is globally calibrated from only eight pre‐strain datasets, enabling prediction of the complete sensing response at untested pre‐strain values within the calibrated design space (R2 > 0.99).
Shang JC, Wang R, Lu B, Song ML, Chen YY, Han K, Feng XJ, Sun B, Cao YG, Yan XY, Yang SC.   +10 more
europepmc   +2 more sources

Micro-electro-mechanical systems capacitive ultrasonic transducer with a higher electromechanical coupling coefficient

, 2015
Since the proposing of capacitive micromachined ultrasonic transducer by Khuri Yakub group in 1994 that this kind of transducer occupying the advantages of wide bandwidth, impedance matching well with the propagation medium especially in fluid and air ...
Xiong, JJ, Miao, J(苗静), He, CD, Miao, J, Shen, WJ(沈文江), Xue, CY   +5 more
core   +1 more source

Liquid Metal Resistive Sensing Architectures for Measuring Diaphragm Strain Responses on Obstructed Surfaces

Advanced Materials Technologies, EarlyView.
A liquid metal‐based strain‐sensing architecture to measure the deformation of a circular diaphragm against obstructed surfaces is formulated using finite element modeling and confocal imaging to establish the mechanical framework and is utilized to control diaphragm‐induced confinement on a bead array, as validated by biomolecular loading level ...
Abdullah‐Bin Siddique, Jui‐Hong Weng, Deng‐Kai Yang, Chia‐Fu Chou, Nathan S. Swami   +4 more
wiley   +1 more source

High-performance adhesive solutions for piezoelectric activation in structures under bending

Materials & Design
The integration of piezoceramics transducers on mechanical structures designed for energy harvesting or mechanical damping requires the use of an adhesive layer.
Corentin Camus, Pierre-Jean Cottinet, Lionel Petit, Minh-Quyen Le, Claude Richard   +4 more
doaj   +1 more source