The magnetic and microwave properties of nanocomposites containing iron particles encapsulated in a carbon shell (Fe@C), as well as carbon nanotubes (CNT), have been experimentally studied. The examination of magnetic properties of composites shows that the materials under study contain a ferromagnetic component. The availability of ferromagnetic ordering for the dielectric matrix-based nanocomposite sample with Fe@C particles has been confirmed by the measurement results of the transmission and the reflection coefficients of the microwaves, since the ferromagnetic resonance has been observed. Furthermore, in the fields less than the field of ferromagnetic resonance, there are the signs of the presence of ferromagnetic antiresonance. The ferromagnetic resonance leads to minima in the transmission and reflection coefficients, whereas the antiresonance, conversely, leads to maxima in the reflection coefficient. The measurement results have been compared with the theoretical calculations of the field dependence of microwave transmission and reflection coefficients.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9332422 | PMC |
| http://dx.doi.org/10.3390/ma15155124 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The omicron variant of SARS-CoV-2 drove broadly increased seroprevalence in a public university setting.
PLOS Glob Public Health
January 2025
Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, United States of America.
Omicron is the comparatively most transmissible and contagious variant of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2). We conducted a seroprevalence study from March 1-3, 2022, to investigate the seroprevalence of SARS-CoV-2 antibodies among individuals aged 18 years and older after the Omicron outbreak. The seroprevalence of anti-receptor binding domain (RBD) antibodies was found to be 96.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Emory University School of Medicine, Atlanta, GA, USA.
Background: Early stages of Alzheimer's disease (AD) are characterized by neuropsychiatric symptoms such as anxiety, apathy, compulsivity, and sleep disturbances, which manifest years before cognitive deficits. It has been hypothesized that dysregulation of the locus coeruleus-norepinephrine (LC-NE) system contributes to these symptoms because (1) the LC is the first site where hyperphosphorylated 'pretangle' tau can be detected in the human brain and (2) NE influences physiological processes such as mood, stress responses, and arousal. To investigate causal relationships between LC tau pathology and neuropsychiatric symptoms, we developed a translationally-relevant model where pathogenic tau is exclusively expressed in mouse LC to recapitulate the 'LC-first' phenomenon.
View Article and Find Full Text PDFPoison, lies, war: A mixed methods content analysis of posts about COVID-19 vaccination on Gab Social.
Hum Vaccin Immunother
December 2025
Communication Department, California State Polytechnic University, Pomona, CA, USA.
Recent surges in COVID-19 cases demonstrate the unabated transmissibility of this disease. Despite the ongoing threat of contagion, however, uptake of the COVID-19 vaccines, especially as booster doses, remains suboptimal among eligible adults and children in the United States, as reported by the World Health Organization (WHO). Public attitudes toward these vaccines remain balkanized, with some groups harboring ambivalence or even opposition to receiving inoculation.
View Article and Find Full Text PDFThe intergenerational impact of mothers and fathers on children's word reading development.
J Child Psychol Psychiatry
January 2025
Department of Education, Universityof Oslo, Oslo, Norway.
Background: Numerous studies have investigated the associations between the home literacy environment (HLE) and children's word reading skills. However, these associations may partly reflect shared genetic factors since parents provide both the reading environment and their child's genetic predisposition to reading. Hence, the relationship between the HLE and children's reading is genetically confounded.
View Article and Find Full Text PDFHigh-speed FSO-5G wireless communication system with enhanced loss compensation using high-power EDFA.
Sci Rep
January 2025
Institute of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan.
In this paper, we demonstrated a novel bidirectional high-speed transmission system integrating a free-space optical (FSO) communication with a 5G wireless link, utilizing a high-power erbium-doped fibre amplifier (EDFA) for enhanced loss compensation. The system supports downlink rates of 1-Gb/s/4.5-GHz and 10-Gb/s at 24-GHz and 39-GHz, and an uplink rate of 10-Gb/s/28-GHz.
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!