Results 61 to 70 of about 17,066 (292)

Modeling and Simulation of Electromechanical Coupling Dynamics for Permanent Magnet Synchronous AC Servomotor [PDF]

, 2011
Lagrange-Maxwell equations and Park transform are adopted based on electrical and mechanical energy equations consisting of servomotor parameters. Lagrange-Maxwell equations are transformed from three-phase stator reference coordinates to two-phase rotor
Yue Hua Pang, Xiang Xin He, Jian Guo Li
core   +1 more source

Enhanced electromechanical coupling of a nanomechanical resonator to coupled superconducting cavities [PDF]

Scientific Reports, 2016
AbstractWe investigate the electromechanical coupling between a nanomechanical resonator and two parametrically coupled superconducting coplanar waveguide cavities that are driven by a two-mode squeezed microwave source. We show that, with the selective coupling of the resonator to the cavity Bogoliubov modes, the radiation-pressure type coupling can ...
Peng-Bo Li, Hong-Rong Li, Fu-Li Li
openaire   +3 more sources

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Electromechanical coupling in cholesteric liquid crystals [PDF]

, 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

Measuring Electromechanical Coupling in Patients with Coronary Artery Disease and Healthy Subjects

Entropy, 2016
Coronary artery disease (CAD) is the most common cause of death globally. To detect CAD noninvasively at an early stage before clinical symptoms occur is still nowadays challenging. Analysis of the variation of heartbeat interval (RRI) opens a new avenue
Lizhen Ji, Peng Li, Chengyu Liu, Xinpei Wang, Jing Yang, Changchun Liu   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Surface acoustic wave velocity and electromechanical coupling coefficient of GaN grown on (0001) sapphire by metal-organic vapour phase epitaxy [PDF]

, 2001
High-quality and high-resistivity GaN films were grown on (0001) sapphire face by metal-organic vapour phase epitaxy. To measure the surface acoustic wave properties accurately, we deposited metallized interdigital transducers on the GaN surface.
He ST, Yan L, Wang D, Chen XY, Wang ZG, Wang XH, Chen Z,Chinese Acad Sci,Inst Semicond,Lab Semicond Mat Sci,Beijing 100083,Peoples R China., Liu XL, Lu DC, Chen Z, Li HL, Han PD, Yuan HR   +12 more
core  

LiNbO3 Surface Acoustic Wave Resonators with Large Effective Electromechanical Coupling [PDF]

, 2023
This paper reports an LNO surface acoustic wave (SAW) resonator based on a shear horizontal mode with high operating frequency over 3 GHz, large electromechanical coupling of 33.54%, Q factor of 380, and a relatively good figure of merit (FOM) of 127 ...
Wei Fan, Yao Shuai, Lu Lv, Dailei Zhu, Shitian Huang, Zijie Wei, Yuedong Wang, Xinqiang Pan, Chuangui Wu, Wanli Zhang, Wenbo Luo   +10 more
core   +1 more source

3D‐Printable, Biodegradable, and Conductive/Piezoionic Hydrogel ‘E‐Skin’ With Robust Antibacterial Properties for Wound Healing and Wireless Human‐Machine Interface Sensing

Advanced Functional Materials, EarlyView.
A multifunctional MXene‐integrated GelMA/alginate hydrogel reinforced with TEMPO‐modified nanocellulose is engineered via dynamic covalent, ionic, and hydrogen bonding. The resulting piezoelectric, adhesive, antimicrobial, and 3D‐printable patch enables motion sensing and accelerates wound healing by promoting keratinocyte migration and collagen ...
Myoungjoon Jeon, Sayan Deb Dutta, Md. Moniruzzaman, Jeong Man An, Youjin Seol, Gyuhan Son, Sung Ha Jo, Hyun Chang Jung, Beom‐Soo Shin, Jongsung Kim, Yong‐kyu Lee, Ki‐Taek Lim   +11 more
wiley   +1 more source