Results 71 to 80 of about 4,178 (152)

Flexible and low cost piezoelectric composites with high d33 values

open access: yes, 2019
The disclosure concerns filled a polymer composite comprising a piezoelectric filler and a polymer resin. The composite may exhibit a piezoelectric coefficient d33 of greater than 30 pC/N when measured according to the Berlincourt Method using a d33 ...
Groen, Wilhelm Albert   +3 more
core  

Revealing the Giant Electromechanical Effects in Yttria‐Stabilized Zirconia Single Crystal

open access: yesAdvanced Science, EarlyView.
Giant electromechanical responses are uncovered in yttria‐stabilized zirconia single crystal (SC‐YSZ), exhibiting pronounced orientation dependence. The giant electrostriction and piezoelectricity are directly correlated with the long‐range transport kinetics of oxygen vacancies.
Zhuwu Yi   +8 more
wiley   +1 more source

Investigation of the piezoelectric charge coefficient d33 of thick-film piezoelectric ceramics by varying poling and repoling conditions [PDF]

open access: yes, 2014
Piezoelectric ceramics are commonly used in various sensing applications. In this paper, the effect of poling and repoling conditions on thick-film piezoelectric ceramics were investigated.
Kok, Swee Leong   +1 more
core   +1 more source

Electronic Chip‐Mimetic Medical Implants for Controllable Sonothermal Treatments

open access: yesAdvanced Science, EarlyView.
Inspired by the thermal effect of working electronic chips, which consist of various heterostructures, an sonothermal‐responsive platform has been developed through constructing metal‐semiconductor interface on implants. Biofilm infection and deep vein thrombosis can be successfully treated by controllable ultrasound treatments.
Zhengdong Zhang   +10 more
wiley   +1 more source

Measurements of Piezoelectric Constant D33 of Lead Zirconate Titanate (PZT) Through Use of a Mini Impact Hammer

open access: yes, 2009
Lead Zirconate Titanate Oxide (PbZrxTi1−xO3 or PZT) is a piezoelectric material widely used as sensors and actuators. For microactuators, PZT often appears in the form of thin films to maintain proper aspect ratios.
I. Y. Shen, G. Z. Cao, Qing Guo
core   +1 more source

From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits

open access: yesAdvanced Science, EarlyView.
This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang   +5 more
wiley   +1 more source

Chirality‐Driven Piezocatalysis in MOFs: Achieving Efficient Cocatalyst‐Free Hydrogen Evolution

open access: yesAngewandte Chemie, EarlyView.
We report a chirality‐driven post‐synthetic modification strategy that grafts chiral L‐histidine (L‐His) onto the Hf6 clusters of MOF‐808(Hf), which significantly boosts the piezoelectricity and charge transfer efficiency, thus significantly enhancing the piezocatalytic performance of MOF‐808(Hf).
Yali Ma   +7 more
wiley   +2 more sources

Piezoelectric Ceramics with High d33 Constants and Their Application to Film Speakers

open access: yes, 2021
A multilayer piezoelectric material was fabricated using piezoelectric materials with low-temperature sintering capabilities and high piezoelectric coefficients to develop a functionally superior piezoelectric speaker with a large-displacement ...
Heechul Lee, Sowon Kim
core   +1 more source

Freestanding Hierarchical‐Porous BCZT Thin Films Enable Efficient Ultrasonic Energy Harvesting in Soft Tissue

open access: yesAdvanced Science, EarlyView.
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 ...
Zifan Li   +14 more
wiley   +1 more source

Proof mass effects on spiral electrode d33 mode piezoelectric diaphragm-based energy harvester

open access: yes, 2013
This paper presents the characterization of an energy harvester using a piezoelectric diaphragm as the vibration energy conversion microstructure. The diaphragm containing the spiral electrode operates in the d33 mode.
Zhihong Wang   +9 more
core   +1 more source

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