Results 81 to 90 of about 191,690 (317)

High-intensity focused electromagnetic field – application in aesthetic medicine

open access: yes, 2022
High-intensity focused electromagnetic field is one of the 5 non-invasive body shaping techniques approved by the U.S. Food and Drug Administration. There is a rising demand for these methods and their popularity is growing.
Michał Smoczok   +3 more
core   +1 more source

A Non‐Reciprocal Architected Porous Medium

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies   +2 more
wiley   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

Upper bounds on absorption and scattering

open access: yesNew Journal of Physics, 2020
A general framework for determining fundamental bounds in nanophotonics is introduced in this paper. The theory is based on convex optimization of dual problems constructed from operators generated by electromagnetic integral equations.
Mats Gustafsson   +3 more
doaj   +1 more source

Light‐Actuated Fiber‐Climbing Inchworm Robot Toward Endoluminal Navigation

open access: yesAdvanced Functional Materials, EarlyView.
A kirigami‐inspired soft inchworm robot harnesses optical energy from a customized side‐emitting optical fiber, guaranteeing its propulsion along the fiber body. The wavelength‐selective responsiveness of dye‐functionalized liquid crystal elastomers and the application of temporal illumination patterns enable sequential control of robot components. The
Antonio Lobosco   +6 more
wiley   +1 more source

Dual-PEEC Modeling of a Two-Port TEM Cell for VHF Applications [PDF]

open access: yes, 2011
Two-port TEM cells with rectangular cross section are commonly used to produce plane electromagnetic waves with high electric field. The non-uniform structure makes the use of numerical methods extremely useful in the design phase in order to achieve a ...
Alotto, P.   +17 more
core   +1 more source

A novel thyristor‐based hybrid DC circuit breaker with short arcing capability

open access: yesHigh Voltage
Multi‐terminal flexible high‐voltage direct current (HVDC) transmission and DC grid technology are developing rapidly. The hybrid DC circuit breaker (HCB) has broad application prospects in the field of HVDC transmission and DC power grid.
Guanlong Jia   +4 more
doaj   +1 more source

Hierarchical Markov model used in the reliability assessment and management of low-voltage switchgear

open access: yesAdvances in Mechanical Engineering, 2017
In this article, the reliability assessment and management of low-voltage switchgear was introduced based on a hierarchical Markov model. First, the reliability block diagram of motor control center was established by actual circuit.
Jingqin Wang   +3 more
doaj   +1 more source

Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks

open access: yesIEEE Photonics Journal, 2019
In this paper, a hybrid free-space optical and visible light communication (FSO/VLC) system was experimentally demonstrated as a solution to overcome the last mile and last meter access networks bandwidth bottleneck. We evaluate the system performance of
Petr Pesek   +4 more
doaj   +1 more source

Design of One-Eighth Spherical Dielectric Resonator Antenna for 5G Applications

open access: yesIEEE Access, 2020
A one-eighth spherical surface dielectric resonator antenna (OESS-DRA) is proposed first time. To analyze this thin shell structure, electromagnetic fields distribution is discussed by using the Hertz vector and boundary conditions.
Zhiwei Song   +4 more
doaj   +1 more source

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