Results 151 to 160 of about 1,985,820 (299)
Multi‐Stimuli Responsive Angstrom‐Scale Two‐Dimensional Channels of Natural Layered Materials
Advanced Materials, EarlyView.Å‐scale ion channels naturally formed within the interlayers of vermiculite clay enable ionic current modulation in response to mechanical, chemical, and electrical stimuli. Coupled pressure and electric fields induce reversible streaming current (Istream) polarity inversion, which is explained by a modified surface charge regulation model.
Raj Kumar Gogoi +5 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood +7 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.A 4‐layer Kevlar‐based composite is fabricated by combining ultrasonic spraying and electrostatic flocking. Carbon black dispersion is first deposited onto Kevlar fabric to create a conductive electrode. Nylon fibers are then electrostatically flocked onto the coated fabric, forming a dielectric layer.
Mengdi Chen +7 more
wiley +1 more source
Permittivity measurement of materials by coax probe
, 2015 This thesis describes possibilities of measuring permittivity of various materials, especially with coaxial probe method. It describes character of measuring method, hardware requirements and how to calculate values from the measured.
Ryba, Ivan
core
Advanced Materials Interfaces, EarlyView.A lead‐free and Cd‐free RbSn₀.5Ge₀.5I3 perovskite solar cell is optimized through In2Se3/CuI charge‐transport engineering using SCAPS‐1D. Spike‐type band alignment suppresses interfacial recombination, enhances charge extraction, and achieves a power conversion efficiency of 26.01%, providing an effective strategy for high‐performance and ...
Md. Al Amin +5 more
wiley +1 more source
Electrical permittivity measurement method
, 2021 ilustraciones, fotografías, gráficas, tablas In this research, a method is presented to measure electrical permittivity, using reflectometry techniques with the help of a vector network analyzer (VNA) and a Vivaldi type antenna developed during the investigation.
openaire +1 more source
Analysis and measurement of permittivity in composite materials at low frequencies
, 2014 This paper focuses on the measurement of the effective permittivity εeff in composite structures. A reconsideration of some concepts related to the measurement of effective permittivity for dielectric media and compositematerials at low frequencies is ...
MICHELETTI, ROBERTO +3 more
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Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing
Advanced Materials Technologies, EarlyView.Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar +5 more
wiley +1 more source
A wideband spectrometer for the measurement of permittivity [PDF]
Measurements of dielectric relaxations below 1 GHz, and over a wide temperature range, can yield important information on the dynamics of dipoles at both the microscopic and macroscopic levels. Complete characterisations of materials over this region are rare and normally require the integration of several measuring techniques.
openaire
, 2017 A hollow dielectric resonator has been developed for the measurement of either the conductivity or the permittivity of bulk samples in form of small cylinders.
Kostiantyn Torokhtii +2 more
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