Results 71 to 80 of about 7,264,350 (237)

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

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

Study on the Electromechanical Coupling Properties and Tuning Mechanisms of Ta-Doped Lithium Niobate Crystals Based on First-Principles Calculations

Crystals
This study investigates the effects of Ta doping on the elastic, dielectric, piezoelectric, and electromechanical coupling properties of lithium niobate (LiNbO3, LN) crystals using first-principles calculations.
Jiahao Li, Xuefeng Xiao, Han Zhang, Xu Han, Jiayi Chen, Yan Huang, Yan Zhang, Shuaijie Liang, Huan Zhang, Lingling Ma, Cui Yang, Jiandong Wu, Xuefeng Zhang, Yong Yang   +13 more
doaj   +1 more source

New piezoelectric shunt tuning method based on the effective electromechanical coupling coefficient: Validation and 3D implementation

, 2018
In the present work, a newly proposed resonant shunt tuning method is implemented in the commercial ANSYS® finite element (FE) code. For this purpose, the tuning method is written in a more general format that does not explicitly contain the resulting ...
Benjeddou, Ayech, Toftekær, Johan Frederik, Høgsberg, Jan   +2 more
core  

Wavelength‐Multiplexed 2D Beam Steering via a Passive Diffractive Network

Advanced Optical Materials, EarlyView.
Illustration of a wavelength‐multiplexed diffractive beam steering system, which is composed of K cascaded diffractive layers, each containing phase‐modulating elements that are jointly optimized using deep learning–based optimization. When illuminated with a set of wavelengths {λ1,λ2,…,λNw}$\{ {{{\lambda }_1},{{\lambda }_2},\ldots ,{{\lambda }_{{{N}_w}
Che‐Yung Shen, Yuhang Li, Çağatay Işıl, Tianyi Gan, Mona Jarrahi, Aydogan Ozcan   +5 more
wiley   +1 more source

Electromechanical coupling in cholesteric liquid crystals

, 1987
We report the first observation on the «Lehmann rotation» of the director configuration of flat cholesteric drops subjected to a DC electric field. This allows us to determine both the sign and the magnitude of the electromechanical coupling coefficient ...
Madhusudana, N. V., Pratibha, R.
core   +2 more sources

Largely enhanced out-of-plane electromechanical coupling effects in two-dimensional molybdenum-disulfide/boron-nitride heterostructures

Nano Research
The electromechanical coupling effects in two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted great interest. However, for 2D TMDs, piezoelectricity is confined to the basal plane, and the flexoelectricity-derived out-of-plane ...
Qiong Liu, Vijay Kumar Choyal, James E. Morris, Timon Rabczuk, Xiaoning Jiang, Xiaoying Zhuang   +5 more
doaj   +1 more source

The Effect of Electrical Impedance Matching on the Electromechanical Characteristics of Sandwiched Piezoelectric Ultrasonic Transducers

Sensors, 2017
For achieving the power maximum transmission, the electrical impedance matching (EIM) for piezoelectric ultrasonic transducers is highly required.
Yuan Yang, Xiaoyuan Wei, Lei Zhang, Wenqing Yao   +3 more
doaj   +1 more source

Repeated exercise stress impairs volitional but not magnetically evoked electromechanical delay of the knee flexors [PDF]

, 2012
The effects of serial episodes of fatigue and recovery on volitional and magnetically evoked neuromuscular performance of the knee flexors were assessed in twenty female soccer players during: (i) an intervention comprising 4x35s maximal static exercise;
Bailey, A, Roger Eston, Eston, R, Minshull, Claire, Bailey, A., Rees, D., Claire Minshull, Minshull, C, Eston, R., Nigel Gleeson, Rees, D, Dai Rees, Gleeson, N, Andrea Bailey, Gleeson, Nigel   +14 more
core   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source