Results 91 to 100 of about 7,264,350 (237)

Parametric Analysis and Experimental Verification of a Hybrid Vibration Energy Harvester Combining Piezoelectric and Electromagnetic Mechanisms

Micromachines, 2017
Considering coil inductance and the spatial distribution of the magnetic field, this paper developed an approximate distributed-parameter model of a hybrid energy harvester (HEH). The analytical solutions were compared with numerical solutions.
Zhenlong Xu, Xiaobiao Shan, Hong Yang, Wen Wang, Tao Xie   +4 more
doaj   +1 more source

Interlayer‐Sliding‐Enabled Multiferroicity and Giant Switchable Anomalous Hall Conductivity in RuO2Zn2F2 Bilayer

Advanced Science, EarlyView.
Interlayer sliding in the RuO2Zn2F2 bilayer induces ferroelectricity and enables reversible valley polarization switching. The electric dipole and valley‐resolved band edges are intimately coupled, revealing sliding ferroelectricity as a powerful mechanism for electrical control of valley degrees of freedom in 2D materials.
Djamel Bezzerga, Imran Khan, Ganie Suhail Ahmad, Jisang Hong   +3 more
wiley   +1 more source

Design and simulation of dual-mode structure of two-dimensional-mode resonators based on AlN film

Nantong Daxue xuebao. Ziran kexue ban
Two-dimensional-mode resonators (2DMR) based on aluminum nitride (AlN) piezoelectric thin films have attracted extensive attention in the industry due to their high effective electromechanical coupling coefficient (k2eff) and compatibility with ...
ZHAO Jicong; WANG Xingyu; SUN Haiyan
doaj   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Design and Fabrication of 3.5 GHz Band-Pass Film Bulk Acoustic Resonator Filter

Micromachines
With the development of wireless communication, increasing signal processing presents higher requirements for radio frequency (RF) systems. Piezoelectric acoustic filters, as important elements of an RF front-end, have been widely used in 5G-generation ...
Yu Zhou, Yupeng Zheng, Qinwen Xu, Yuanhang Qu, Yuqi Ren, Xiaoming Huang, Chao Gao, Yan Liu, Shishang Guo, Yao Cai, Chengliang Sun   +10 more
doaj   +1 more source

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

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

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

Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics

Advanced Science, EarlyView.
Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Dongyu Bai, Ri He, Junxian Liu, Liangzhi Kou   +3 more
wiley   +1 more source

On the electromechanical coupling in electromagnetic vibration energy harvesters

, 2019
This paper presents a theoretical and numerical analysis of the electromechanical coupling occurring in levitation-based electromagnetic vibration energy harvesters.
Saravia, César Martín
core   +1 more source