Results 51 to 60 of about 142,351 (318)

Polymer composites with high energy density and charge–discharge efficiency at high temperature using aluminum oxide particles

Journal of Materials Research and Technology, 2022
Polymer-based dielectric capacitors with excellent elevated-temperature capacitive performances are highly demanded in next-generation electronic power systems.
Zhenhao Fan, Yangyang Zhang, Ying Jiang, Zhangmeng Luo, Yunbin He, Qingfeng Zhang   +5 more
doaj   +1 more source

Fabrication and characterization of free-standing thick-film piezoelectric cantilevers for energy harvesting [PDF]

, 2009
Research into energy harvesting from ambient vibration sources has attracted great interest over the last few years, largely as a result of advances in the areas of wireless technology and low power electronics.
Kok, Swee Leong, Harris, Nick, White, Neil   +2 more
core   +1 more source

Hot‐Film and Calorimetric Methods With Transient Heating for Measurement of High Biofluid Flow Rate

Advanced Functional Materials, EarlyView.
Accurate measurement of biofluid flow rate is vital for clinical diagnostics. We propose a transient heating strategy using short thermal pulses and peak temperature tracking to enhance the flow sensitivity of the hot‐Film and calorimetric methods. Simulations show how optimal heating time maximizes sensitivity across flow rates.
Yuanting Wei, Shupeng Li, Kyung Rok Pyun, Tianyu Yang, Bosung Kim, Haotian Yang, John A. Rogers, Yonggang Huang, Haohui Zhang   +8 more
wiley   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

Advanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu, Xiangwei Guo, Sajid Husain, Maya Ramesh, Pushpendra Gupta, Darrell Schlom, Ramamoorthy Ramesh, Yu‐Tsun Shao   +7 more
wiley   +1 more source

Flexoelectric effect on thickness-shear vibration of a rectangular piezoelectric crystal plate

Materials Research Express, 2021
Thickness-shear (TSh) vibration of a rectangular piezoelectric crystal plate is studied with the consideration of flexoelectric effect in this paper. The developed theoretical model is based on the assumed displacement function which includes the anti ...
Yang Zheng, Bin Huang, Ji Wang
doaj   +1 more source

Effects of temperature on the impedance of piezoelectric actuators used for SHM [PDF]

, 2014
— FEM modeling of piezoelectric patches used as actuators and sensors for SHM applications. — Test/analysis correlation of temperature effects in piezoelectric materials and glue — Numerical methods associated with the prediction of electric transfers ...
BALMES, Etienne, GUSKOV, Mikhail, MECHBAL, Nazih, RÉBILLAT, Marc   +3 more
core  

A new flextensional piezoelectric ultrasonic motor - design, fabrication and characterisation

, 2007
This paper presents the techniques used for the characterisation of a new type of standing-wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or “cymbal”, to convert the radial mode vibrations of a piezoelectric ...
Wilson, Stephen, Leinvuo, J. T., Whatmore, R. W., Leinvuo, Joni T., Wilson, Stephen A., Whatmore, Roger W., Cain, Markys G., Cain, M. G.   +7 more
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Bandgap narrowing and polarization enhancement in (K,Na,Li)(Nb,Sb,Ta)O3+x% Fe2O3 lead-free ceramics for photovoltaic applications

Journal of Advanced Ceramics, 2023
The need for ferroelectric materials with both narrow bandgaps (Eg) and large remanent polarization (Pr) remains a key challenge to the development of high-efficiency ferroelectric photovoltaic (FPV) devices.
Jian Chen, Jiaxing Mao, Zihui Wang, Yanhui Dong, Jinming Guo, Mingkai Li, Yi Zhang, Yinmei Lu, Yunbin He   +8 more
doaj   +1 more source