We develop a method for the extraction of the surface impedance tensor of a generic reflective metasurface using an analytic relation between the tensorial surface impedance and the four polarisation-dependent reflection coefficients. We apply this technique to experimental data obtained from a metasurface with a rhomboidal unit cell in the 16-26 GHz range, but note that it could be applied to reflective metasurfaces in any frequency regime. The extraction method can also be applied to model data to facilitate the design process of spatially graded tensorial metasurfaces that allow for full control of the form of the scattered field.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11544093 | PMC |
| http://dx.doi.org/10.1038/s41598-024-76671-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Novel ionic liquid-infused PVA-based anion exchange membranes boosting bioelectricity yield from microbial fuel cells.
Heliyon
January 2025
Amity Institute of Microbial Technology, Amity University Rajasthan, Kant Kalwar, Jaipur, 303002, Rajasthan, India.
The goal of this research is to develop and characterize low-cost NHI doped polyvinyl alcohol (PVA)-4-ethyl-4-methylmorpholiniumbromide (ionic liquid) anion exchange membranes (AEM) and its application for membrane cathode assembly. Physical characterization like FTIR, POM, and XRD notified the functional groups, basic structure, and amorphosity of the produced membrane, and it was employed in single-chambered microbial fuel cells (sMFCs) as a separator. The membranes in terms of oxygen diffusion, proton conductivity, and ion exchange capabilities were evaluated.
View Article and Find Full Text PDFTartaric acid, an effective additive to improve the surface properties and bio-corrosion resistance of HA-coated magnesium-based implants.
Int J Biol Macromol
January 2025
Faculty of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran.
In this research, tartaric acid was used to enhance the hydroxyapatite coating on AZ31 Mg alloy substrate through post-treatment and direct addition methods, and the corrosion resistance and biological activity of the samples were investigated. The parameters of concentration, immersion time, and pH of the coating solution were optimized by Electrochemical Impedance Spectroscopy (EIS) and Direct Current (DC) Polarization techniques. According to EIS results in the post-treatment method, tartaric acid with a concentration of 1 g/L, pH = 9 and immersion time of 2 min, increased the corrosion resistance of hydroxyapatite coating from 3630 to about 18,763 Ω.
View Article and Find Full Text PDFEngineering bandgap energy of MoO nanorod heterostructure using AgVO for efficient photocatalytic degradation of antibiotic pollutant.
Environ Res
January 2025
School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea. Electronic address:
The increasing contamination of water bodies with pharmaceutical pollutants, particularly acetaminophen, necessitates innovative and efficient remediation strategies. This study introduces a novel AgVO@MoO (AV@MoO) nanorod heterostructure synthesized via a hydrothermal process designed to enrich the photocatalytic degradation of antibiotic pollutant using visible light irradiation. The bandgap energy of the optimum AV@MoO-3 heterostructure is 2.
View Article and Find Full Text PDFA carbon fiber modified with tin oxide/graphitic carbon nitride as an electrochemical indirect competitive immuno-sensor for ultrasensitive aflatoxin M detection.
Bioelectrochemistry
January 2025
Department of Chemistry, Govt. College Women University, Arfa Kareem Road, Faisalabad 38000 Pakistan. Electronic address:
The importance of developing multifunctional nanomaterials for sensing technologies is increasing with the arrival of nanotechnology. In this study, we describe the introduction of novel nanoprobe electro-active material into the architecture of an electrochemical immuno-sensor. Based on the electrochemical immuno-sensor, functionalized tin oxide/graphitic carbon nitride nanocomposite (fSnO/g-CN) was synthesized and then analyte specific anti-aflatoxin M monoclonal antibody (AFM-ab) combined to form an electro-active nanoprobe (fSnO/g-CN/AFM-ab).
View Article and Find Full Text PDFElectrochemical Detection of Cadmium Using a Bismuth Film Deposited on a Brass Electrode.
Sensors (Basel)
December 2024
Technical Faculty in Bor, University of Belgrade, Vojske Jugoslavije 12, P.O. Box 50, 19210 Bor, Serbia.
Cadmium is one of the most dangerous pollutants found in the environment, where it exists mainly due to human activities. High cadmium concentrations can cause serious problems, which is why the detection and determination of Cd is one of the most important tasks. Electroanalytical methods provide rapid and accurate results in the detection of cadmium in various solutions.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!