Results 51 to 60 of about 3,135 (259)

Optimization of parameters of a modal active control in a beam of composite material

MATEC Web of Conferences, 2018
The present work proposes the active vibration control in a beam of composite material, using electromagnetic actuators, in order to obtain a reduction in the response of the displacement of the system associated to a reduction in energy consumption. The
da Silva Camila Albertin Xavier, Taketa Erik, Koroishi Edson Hideki, Lara-Molina Fabian Andres, Faria Albert Willian   +4 more
doaj   +1 more source

Soft, Degradable, and Magnetic Microcarriers for Encapsulation and Guided Transport of Drugs and 3D Spheroids

Advanced Materials, EarlyView.
This work presents soft, degradable hydrogel microcarriers that combine magnetic responsiveness with the ability to host multiple therapeutic and cellular components. Produced by droplet microfluidics, the carriers maintain structural integrity during manipulation, permit controlled breakdown under physiological conditions, and enable guided motion for
Xuan Peng, Lulu Song, Daryna Mruga, Veronika Bakhmat, Sergei Dzyadevych, Lin Guo, Shahrukh Shakeel, Rico Illing, Olha Bezsmertna, Xiaotao Wang, Nicholas R. Posselli, Sarthak Misra, Sandra Hauser, Jens Pietzsch, Klaus Kopka, Denys Makarov, Željko Janićijević, Xinne Zhao, Larysa Baraban   +18 more
wiley   +1 more source

Design, experiments and multidisciplinary optimization of 2 degrees-of-freedom electromagnetic actuator for application in space vibration isolation

Advances in Mechanical Engineering, 2017
Considering space environmental requirements, a multidisciplinary optimization of a 2 degrees-of-freedom micro linear actuator is carried out to improve the overall performance of a nested flying vehicle in this article.
Yuan Yun, Lyu Wang, Bin Zhang, Yao Tian, Tao Zhang   +4 more
doaj   +1 more source

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

Advanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim, Antonio Proctor Martinez, Yaoye Hong, Ziyun Zhang, Kun‐Yu Wang, Shu Yang   +5 more
wiley   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Fuzzy Control of Rotor System Using an Electromagnetic Actuator

MATEC Web of Conferences, 2012
In recent years, a number of new methods dedicated to acoustic and vibration attenuation have been developed and proposed aiming at handling several types of engineering problems related to the dynamic behavior of the system.
Steffen V., Mahfoud J., Koroishi E. H.
doaj   +1 more source

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

Advanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik, Fedor Kovalev, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Ilya Shadrivov, Mariusz Martyniuk   +6 more
wiley   +1 more source

The Simulation Design of Linear Actuator of Downhole Oil Recovery Vibration Device

Shiyou jixie, 2016
To reproduce the wells which have declined production or even have been shut down due to various impurities clogging,a new type of downhole vibration device has been designed to improve oil recovery through the vibration effects on the reservoir.The ...
Hou Yongjun, Zhou Ran, Long Xiaokang, Fu Yunhao   +3 more
doaj  

Two-Position Linear Electromagnetic Gear-Shifting Actuator and the Influence of Ferromagnetic Material Proximity on Its Performance

IEEE Access
This paper investigates a magnet-free, two-position electromagnetic gear-shifting actuator designed for mobile machinery applications. Unlike conventional hydraulic, pneumatic, or electromechanical systems, the proposed actuator employs tangential ...
Daniil Zadorozhniuk, Ilya Petrov, Juho Kaasinen, Aleksi Mattsson, Dmitry Egorov, Touko Lankila, Juha J. Pyrhonen, Pasi Peltoniemi   +7 more
doaj   +1 more source

Design and Characterization of a High-Precision Digital Electromagnetic Actuator with Four Discrete Positions

Actuators, 2015
A high-precision planar digital electromagnetic actuator with two displacement directions and four discrete positions is presented in this paper. The four discrete positions are located at each corner of a square cavity where a mobile permanent magnet ...
Laurent Petit, Erwan Dupont, Emmanuel Doré, Frédéric Lamarque, Christine Prelle   +4 more
doaj   +1 more source