Results 61 to 70 of about 72,738 (296)

Percolative behavior in complex permittivity and permeability of silver/epoxy nanocomposite at terahertz by time-domain spectroscopy [PDF]

APL Materials
Complex permittivity and permeability govern the electromagnetic (EM) behavior of materials and are critical for advanced high-frequency applications. In this work, we investigate silver/epoxy nanocomposites as a prototypical conductor–insulator system ...
Bo-Wei Tseng, Hua-Yan Chen, Po-Hsiang Chuang, Chan-Shan Yang, Tsun-Hsu Chang   +4 more
doaj   +1 more source

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

Advanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi, Sumukh Shankar Sharadaprasad, Rochus Schmid   +2 more
wiley   +1 more source

The Complex Permittivity of Biological Tissues: A Practical Measurement Guideline

IEEE Access
Despite the significant number of studies published on the measurements of complex permittivity of biological tissues in the last thirty years, implementing a successful measurement program for dielectric measurements can still present a challenge for ...
Lourdes Farrugia, Emily Porter, Raquel C. Conceicao, Simona Di Meo, Daniela M. Godinho, Julian Bonello, Mykolas Ragulskis, Ilja Ocket, Laura Farina, Marta Cavagnaro, Azadeh Peyman   +10 more
doaj   +1 more source

Analysis of glucose‐dependent dielectric properties of aqueous‐based solution: A proof of concept

IET Science, Measurement & Technology, 2021
In spite of widespread research and exploration, the status of non‐invasive blood glucometer for diabetic people is far from satisfactory. This unlocks the prospect for further significant research in the field of non‐invasive blood glucose sensing.
Satish, Kushal Sen, Sneh Anand
doaj   +1 more source

Computational electromagnetic analysis of partially-filled rectangular waveguide at X-band frequencies

Nonlinear Analysis, 2022
In this paper, the full-wave analysis of the direct scattering problem in the rectangular waveguide is derived. The numerical calculation results of the scattering characteristics are presented.
Ilona Zamaraite, Saulius Rudys, Saulius Lapinskas, Rimvydas Aleksiejunas, Robertas Grigalaitis, Juras Banys   +5 more
doaj   +1 more source

Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials

, 2010
This paper presents a simple and effective wideband method for the determination of material properties, such as the complex index of refraction and the complex permittivity and permeability.
Chalapat, Khattiya, Li, Jian, Paraoanu, G. S., Sarvala, Kari   +3 more
core   +1 more source

Evaluation of a VNA-based material characterization kit at frequencies from 0.75 THz to 1.1 THz [PDF]

, 2016
This paper describes an initial assessment of a commercially available THz material characterization kit (MCK). The assessment is based on the measurement of several material samples.
Clarke, Roland, Cumming, David, Khalid, Ata, Li, Chong, Ridler, Nick   +4 more
core   +2 more sources

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

A Method for the Electromagnetic Characterization of Construction Materials Based on Fabry–Pérot Resonance

IEEE Access, 2017
The determination of the complex permittivity of low-loss construction materials at frequency bands above 6 GHz that are being proposed to allocate forthcoming mobile radio services is of critical importance for the design and deployment of future ...
Vittorio Degli-Esposti, Marco Zoli, Enrico M. Vitucci, Franco Fuschini, Marina Barbiroli, Jiajing Chen   +5 more
doaj   +1 more source

Dielectric spectroscopy of PETG/TiO2 composite intended for 3D printing

Virtual and Physical Prototyping, 2023
3D-printed electronics belong to new approaches to how to build a complex object with multiple desired functions. For that purpose, materials with specific electric properties are needed: conductors, insulators, magnetics, or dielectrics with high ...
Petr Veselý, Denis Froš, Tomáš Hudec, Josef Sedláček, Pavel Ctibor, Karel Dušek   +5 more
doaj   +1 more source