Results 141 to 150 of about 28,237 (308)

Artificial Coherent Circulation of Electromagnetic Flows in Free-Space

open access: yesIEEE Access
This paper explores the generation of coherent electromagnetic energy flows to form a shock wave in free-space as a linear medium. Flows of energies from several waves need to build up coherently to create the wave.
Ahmad Alamayreh, Malik I. Al-Amayreh
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Joint Elastic-Electrical Properties of Reservoir Sandstones

open access: yes, 2010
Over the last decade, marine controlled source electromagnetic (CSEM), sub-seabed imaging has developed to a state where routine resistivity mapping of hydrocarbon reservoirs is now possible.
Han, Tongcheng
core  

Experimental study on propagation attenuation characteristics of UWB electromagnetic wave in different coal and mixed media

open access: yesMeitan kexue jishu
Personnel search and localization constitute the fundamental aspects of mine rescue operations. Ultra-Wide Band (UWB) radar technology possesses the capability to penetrate non-magnetic media, including masonry walls, coal, and rock, thereby enabling the
Xuezhao ZHENG   +6 more
doaj   +1 more source

Advanced Technologies for Characterizing and Detecting Battery Thermal Failure: A Review

open access: yesAdvanced Science, EarlyView.
Illustration of advanced characterization techniques to predict battery thermal failure. ABSTRACT Energy storage is essential in accelerating the global transition toward clean and sustainable energy across various sectors. Lithium‐ion batteries (LIBs) have become increasingly significant for energy storage due to their high energy density, low ...
Yongxiu Chen   +5 more
wiley   +1 more source

Electromagnetic wave propagation behavior of conjoined carbon nanotubes

open access: yes, 2023
This study investigates the electromagnetic wave propagation behavior of a structure consisting of two parts with different material parameters. Investigations are made with the carbon nanotube approach.
Basmaci, Ayse Nihan, Filiz, Seckin
core  

Reconfigurable Spoof Plasmonic Skyrmion Electronics for Deformation‐Invariant Multimode Sensing

open access: yesAdvanced Science, EarlyView.
A flexible multimode sensor based on capacitively loaded spoof plasmonic skyrmions enables deformation‐invariant dielectric sensing with ultra‐compact size and high Q‐factor. Near‐equidistant resonances remain stable under shape change and bending, while capacitor loading improves bending robustness and multimode sensitivity, highlighting strong ...
Zengxiang Wang   +7 more
wiley   +1 more source

Propagation Effects in Satellite mounted Radar Remote Sensing

open access: yes, 2009
—Active microwave SAR imaging of the Earth’s surface is commonly considered to be of all weather capability. However, as the operating frequencies of SAR-systems are increasing, visible image distortions due to heavy precipitation in SAR-images may ...
Danklmayer, Andreas
core  

In Situ Polyurea Integration for Self‐Healing, Durable Transparent Electromagnetic‐Interference Shielding Film

open access: yesAdvanced Science, EarlyView.
A steric‐hindrance molecular engineering strategy uses dimethyl maleate (DMM) to convert poly(1,4‐butanediol) bis(4‐aminobenzoate) (PBDAB) into a precursor with reduced reactivity via Michael addition, thereby retarding the curing process to form a transparent, ultraflexible, and self‐healable secondary‑amine polyurea (PuSA) with a crosslinked network.
Sinan Zheng   +10 more
wiley   +1 more source

Field‐Driven Activation of Solid‐State Devices in Open Circuits for Energy Harvesting and Wireless Sensing

open access: yesAdvanced Science, EarlyView.
Time‐varying electric fields can activate solid‐state devices such as LEDs and capacitors for energy harvesting and powering in open circuits. The response of solid‐state devices to time‐varying electric fields caused by vibrations can be utilised for smart sensing of human motions and object vibrations.
Renyun Zhang   +6 more
wiley   +1 more source

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