Results 101 to 110 of about 17,120 (311)

Tunable Multifunctional Terahertz Coding Metasurface for Polarization Manipulation

open access: yesAdvanced Photonics Research, EarlyView.
Coding metasurfaces (CMs) offer versatile control over electromagnetic waves. Herein, a tunable multifunctional terahertz (THz) metasurface integrated with vanadium dioxide (VO2) is presented, enabling propagation‐phase manipulation of linearly polarized waves and hybrid‐phase control of circularly polarized waves.
Chunsheng Zhang   +10 more
wiley   +1 more source

Response characteristics of the orthogonal antennas of electromagnetic azimuthal resistivity measurement while drilling (MWD) tool for coal mining

open access: yesMeitian dizhi yu kantan
Objective and Methods This study aims to determine the factors influencing the detection performance of the electromagnetic azimuthal resistivity measurement while drilling (MWD) tool for coal mining in horizontal wells.
Gang CHEN
doaj   +1 more source

Terahertz Chiral Recognition Based on Metasurfaces

open access: yesAdvanced Photonics Research, EarlyView.
A novel terahertz chiral sensing method based on a multilayer metallic metasurface is proposed. The left‐handed circularly polarized and right‐handed circularly polarized components in the linearly polarized illuminating light into two focal points and convert them back into linear polarization for convenient measurement.
Xuyang Ji   +5 more
wiley   +1 more source

Nanophotonic Strategies for Chiral Biosensing: Nanoparticles, Metasurfaces, Magneto‐Optical, and Quantum Approaches

open access: yesAdvanced Photonics Research, EarlyView.
Recent advances in nanophotonics‐based chiral biosensing approaches are comprehensively reviewed, highlighting key trends, advantages, and limitations of each technology. Special attention is given to emerging strategies that exploit magneto‐optical and quantum plasmonic phenomena to enhance sensitivity down to the level of a few molecules, or even a ...
Jorge Ricardo Mejía‐Salazar
wiley   +1 more source

Testing the Influence of Null-Flux Coil Geometry Parameters on Levitation and Stability of Electrodynamic Suspension Systems Using a New Stationary Simulation Platform

open access: yesActuators
The geometric parameters of the Null-Flux coil (NFC) are crucial to the load capacity and economic viability of electrodynamic suspension (EDS) systems. This study investigates the influence of NFC geometry on the electromagnetic force characteristics in
Jianru Liu, Jun Zheng, Yuhang Yuan
doaj   +1 more source

On–Off Switchable Micromotors for Use in Steerable Microvehicles

open access: yesAdvanced Robotics Research, EarlyView.
Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson   +3 more
wiley   +1 more source

Practice of Electromagnetic Contactor Coil Working Status

open access: yes机车电传动, 2014
Taking CX1015/08 LB electromagnetic contactor utilized in CRH3 EMUs as study object, a new method for judging contactoroperating mechanism failure by checking and comparing the coil current curves was proposed, which could quantify the failure status ...
GENG Xin, LIU Yue-ming
doaj  

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

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