Results 21 to 30 of about 17,459 (262)

Fire-induced changes in the dielectric constant of lichens in plateau palsas of the Nadym-Pur interfluve

Acta Biologica Sibirica, 2023
The paper analyzed the complex permittivity of lichens of the genus Cladonia sampled from areas disturbed by fire and from undisturbed plateau palsas in the Nadym-Pur interfluve, Western Siberia.
Tatiana D. Kochetkova, Uliana Yu. Shavrina, Vladislav S. Murashkin, Viktor A. Nikitkin, Maria A. Volkova, Larisa G. Kolesnichenko   +5 more
doaj   +1 more source

Free-Space Dielectric Property Measurement of Biological Tissues at W-Band Frequencies [PDF]

Journal of Electromagnetic Engineering and Science
This paper presents a free-space measurement method for the dielectric properties of small biological tissues (in this study, micropig skins that are 60 mm × 60 mm in size and 1.4 mm in thickness are used) that do not meet the size requirement of ...
Jin-Seob Kang, Young Seung Lee, Youngcheol Park   +2 more
doaj   +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, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Complex Permittivity Measurements of Film-Type Materials: Effect of the Waveguide Flange

IEEE Access
The 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, Sang Wook Yoon, Jae Wook 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, Robert L. McMichael, Robert C. Schwartz, Steven R. Evett, Joseph A. Viera, Mathew G. Pelletier   +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

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

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, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +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

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

Advanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti, Kubra Kocak, Andrea Michel, Enrico Cavarzerani, Ali Raza, Petr Rohzin, Nouha Loudhaief, Saimir Frroku, Nicolò Baldovin, Hazrat Bilal, Alvise Perosa, Maurizio Selva, Flavio Rizzolio, Luca Sbuelz, Sabrina Tamburini, Domenico De Fazio, Giovanni Antonio Salvatore   +16 more
wiley   +1 more source

A Broadband Quasi-optical System for Measuring the Dielectric Properties in the Terahertz Band

Leida xuebao, 2018
To fulfill the requirements of the dielectric property measurement in the terahertz band, herein, a broadband quasi-optical system was designed and verified utilizing a planar scanning system.
Liu Xiaoming, Yu Junsheng, Chen Xiaodong, Zhou Jun, Gan Lu, Zhang Chijian   +5 more
doaj   +1 more source