Results 31 to 40 of about 1,985,820 (299)
Microwave processing and permittivity measurement of thermoplastic composites at elevated temperature [PDF]
, 1999 [Abstract]: The material properties of greatest importance in microwave processing of a dielectric are the complex relative permittivity ε = ε′- jε″, and the loss tangent, tan δ = ε″/ ε′.
Siores, Elias +7 more
core +1 more source
Advanced Electromagnetics, 2020 A microwave free-space reflection method for determining the complex permittivity of planar materials is demonstrated. Improved the MUltiple SIgnal Classification (MUSIC) algorithm to estimate the complex relative permittivity of material based on the ...
L. C. Nguyen, M. C. Ho, T.-H. Le
doaj +1 more source
Design and analysis of a novel compact high permittivity dielectric resonator antenna [PDF]
, 2009 A very compact and efficient dielectric resonator antenna is proposed and investigated. The novel structure is analyzed using two numerical methods and design guidelines are established.
M.D. Rotaru +3 more
core +1 more source
Measurement Procedures for the Electrical Characterization of Oxide Thin Films [PDF]
, 2009 This paper describes a measurement system for the electrical characterization of oxide thin films. Such films can be produced using plasma-sputtering processes and permit the realization of a large set of high-performance components, such as capacitors ...
Parvis, Marco +2 more
core +1 more source
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Complex Permittivity Measurements of Film-Type Materials: Effect of the Waveguide Flange
IEEE AccessThe flexibility and thinness of most film-type materials make it difficult to use conventional measurement methods such as those in international or organizational standards to accurately measure the complex permittivity of these materials.
Han-Hee Lee +2 more
doaj +1 more source
Analysis of Coaxial Soil Cell in Reflection and Transmission
Sensors, 2011 Accurate measurement of moisture content is a prime requirement in hydrological, geophysical and biogeochemical research as well as for material characterization and process control. Within these areas, accurate measurements of the surface area and bound
Robert J. Lascano +5 more
doaj +1 more source
Measurement and calculation of powdered mixture permittivities [PDF]
IEEE Transactions on Instrumentation and Measurement, 2001 The permittivities of pulverized samples of coal and limestone were measured over a range of bulk densities at 11.7 GHz and 20/spl deg/C. The measured values were used, along with particle densities, determined by pycnometer measurements, and the Landau & Lifshitz, Looyenga (LLL) dielectric mixture equation to determine the solid material ...
openaire +3 more sources
Advanced Functional Materials, EarlyView.Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein +4 more
wiley +1 more source
Measurement of Complex Permittivity in Free Space
Procedia Engineering, 2015 AbstractThe paper describes the measurement of complex permittivity in free space. It is an advanced non-contact method which is used to find the electromagnetic properties of materials. In this case it involves the materials which are used in aviation technology, especially for hardening the avionics against electromagnetic interference. A specialized
Skočík, Petr, Neumann, Petr
openaire +2 more sources