Results 11 to 20 of about 102,310 (215)

Design and Analysis of Fractal-Shaped High-Impedance Surface Unit Cell Characteristics

open access: yesFractal and Fractional, 2023
Fractal geometries consistently provide solutions to several electromagnetic design problems. In this paper, fractal geometries such as Hilbert and Moore curves are used to design efficient High-Impedance Surfaces.
Akash Kumar Gupta   +4 more
doaj   +1 more source

Relationships between in vivo surface and ex vivo electrical impedance myography measurements in three different neuromuscular disorder mouse models

open access: yesPLoS ONE, 2021
Electrical impedance myography (EIM) using surface techniques has shown promise as a means of diagnosing and tracking disorders affecting muscle and assessing treatment efficacy.
Sarbesh R. Pandeya   +6 more
doaj   +2 more sources

Detection of Tomato Ringspot Virus Based on Microfluidic Impedance Sensor

open access: yesMicromachines, 2022
A microfluidic impedance sensor embedded with gold interdigitated array microelectrodes was utilized to rapidly detect Tomato Ringspot Virus (ToRSV) and achieve efficient and precise detection.
Chen Li, Bo Ye, Yongxin Xi, Mu Yuan
doaj   +1 more source

Minimized Low-Profile Wideband Antennas Using High Impedance Surface

open access: yesInternational Journal of Antennas and Propagation, 2017
This paper proposes minimized low-profile wideband antenna by employing high impedance surface (HIS), for wireless application scenarios at radio frequency, microwave, and even terahertz.
Yizhu Shen
doaj   +1 more source

Bowtie Nanoantenna Array Integrated With Artificial Impedance Surfaces for Realizing High Field Enhancement and Perfect Absorption Simultaneously

open access: yesIEEE Access, 2020
High field enhancement and near-perfect absorption in nanoantennas were realized by using in-plane (between nanoantenna arms), out-of-plane (between nanoantenna and reflector), and array coupling (between nanoantennas in an array); however, it was ...
Mohamad Khoirul Anam, Sangjo Choi
doaj   +1 more source

Nonlinear, Active, and Tunable Metasurfaces for Advanced Electromagnetics Applications

open access: yesIEEE Access, 2017
We demonstrate a series of nonlinear, active, and tunable metasurfaces for a variety of electromagnetic applications. The metasurfaces have achieved a range of exotic properties by populating nonlinear or active circuit components on a periodically ...
Aobo Li   +4 more
doaj   +1 more source

Planar Luneburg Lens Based on the High Impedance Surface for Effective Ku-Band Wave Focusing

open access: yesIEEE Access, 2018
In this paper, a planar Ku-band Luneburg lens is designed, fabricated, and measured. Based on the high impedance surface, metamaterial units are designed and arranged in an array with gradient equivalent refractive index to achieve good wave focusing ...
Gong Cheng   +5 more
doaj   +1 more source

Down to Earth With Nuclear Electromagnetic Pulse: Realistic Surface Impedance Affects Mapping of the E3 Geoelectric Hazard

open access: yesEarth and Space Science, 2021
An analysis is made of Earth‐surface geoelectric fields and voltages on electricity transmission power‐grids induced by a late‐phase E3 nuclear electromagnetic pulse (EMP). A hypothetical scenario is considered of an explosion of several hundred kilotons
Jeffrey J. Love   +5 more
doaj   +1 more source

ECIS Based Electric Fence Method for Measurement of Human Keratinocyte Migration on Different Substrates

open access: yesBiosensors, 2022
Electric Cell-substrate Impedance Sensing (ECIS) is an impedance-based, real-time, and label-free measuring system for monitoring cellular activities in tissue culture.
Yu-Han Hung   +6 more
doaj   +1 more source

Measurement of the specific surface area of loose copper deposit by electrochemical methods

open access: yesChimica Techno Acta, 2016
In the work the surface area of the electrode with dispersed copper deposit obtained within 30 seconds was evaluated by techniques of chronopotentiometry (CPM) and impedance spectroscopy.
E. A. Dolmatova   +2 more
doaj   +1 more source

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