Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.5
2.7
Journals
Applied Sciences
Special Issues
Nanostructured and Nanocomposite Materials for Electromagnetic and Sensing Applications
share announcement

Nanostructured and Nanocomposite Materials for Electromagnetic and Sensing Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (10 August 2021) | Viewed by 8964

Special Issue Editors

Dr. Ahmed Talaat

E-Mail Website
Guest Editor
Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USA
Interests: magnetism and magnetic materials; ferromagnetic metallic glasses; functional (nano)composite materials; giant magnetoimpedance effect; domain wall dynamics; rapid solidification techniques; induction heating; magnetic hyperthermia; mechanical alloying
Special Issues, Collections and Topics in MDPI journals
Dr. Jagannath Devkota

E-Mail
Guest Editor
National Energy Technology Laboratory, Leidos Research Support Team, Pittsburgh, PA 15236, USA
Interests: radiofrequency and microwave devices; wireless sensors; electromagnetic materials

Special Issue Information

Dear Colleagues,

Greater efficiency in energy conversion and miniaturization in power electronics require advanced electromagnetic materials that possess desired capabilities at both device and system levels. The pursuit of innovative materials design on the nanoscale has offered unique magnetic, electrical, and mechanical properties with a large degree of advanced functionalities. As such properties are strongly dependent on technical detail of their microstructure at these length scales, nanostructured and nanocomposite-based functional materials can be selectively tuned for a wide range of emerging electromagnetic devices, sensors, and energy applications.

This Special Issue aims to feature recent and new developments in synthesis, modeling, characterization, and applications of nanostructured and nanocomposite functional materials for electromagnetic devices and sensing applications. High-quality research articles and topical reviews on advanced electromagnetic materials will set the stage to develop solutions for future electrification and sustained energy improvements.

Dr. Ahmed Talaat
Dr. Jagannath Devkota
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanostructured soft and hard magnetic materials
  • soft magnetic composites
  • dielectrics and composites
  • electromagnetic shielding
  • microwave absorption
  • high-frequency applications
  • advanced processing and characterization techniques
  • numerical modeling and theoretical calculations
  • magnetic sensors
  • RF-/microwave-based sensors

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

12 pages, 2403 KiB  
Article
Structural, Magnetic and Mechanical Properties of Nd16 (Fe76−xCox)B8 0 ≤ x ≤ 25 Alloys
by Juan Sebastián Trujillo Hernández, Ahmed Talaat, Jesús Tabares, Dagoberto Oyola Lozano, Humberto Bustos Rodríguez, Hugo Martínez Sánchez and German Antonio Pérez Alcázar
Appl. Sci. 2020, 10(16), 5656; https://0-doi-org.brum.beds.ac.uk/10.3390/app10165656 - 14 Aug 2020
Cited by 1 | Viewed by 1825
Abstract
In this work, the structural, magnetic and mechanical properties of Nd16Fe76−xCoxB8 alloys with a varying Co content of x = 0, 10, 20 and 25 were experimentally investigated by X-ray diffraction (XRD), Mössbauer spectrometry (MS) and [...] Read more.
In this work, the structural, magnetic and mechanical properties of Nd16Fe76−xCoxB8 alloys with a varying Co content of x = 0, 10, 20 and 25 were experimentally investigated by X-ray diffraction (XRD), Mössbauer spectrometry (MS) and vibrating sample magnetometry (VSM) at room temperature (RT), and microhardness tests were performed. The system presented hard Nd2Fe14B and the Nd1.1Fe4B4 phases for samples with x = 0; when the concentration increased to x = 20 and 25, the CoO phase appeared. All MS data showed ferromagnetic behavior (eight sextets: sites 16k1, 16k2, 8j1, 8j2, 4c, 4e, sb) associated with the hard and soft magnetic phases, and one paramagnetic component (doublet: site d) associated with the minority Nd1.1Fe4B4 phase, which was not identified by XRD. All samples were magnetically hard and presented hard magnetic behavior. The increase of Co content in these samples did not improve the hard magnetic properties but increased the critical temperature of the system and decreased the crystallite size of the hard phase. There was a general tendency towards increased microhardness with cobalt content that was attributable to cobalt doping, which reduces the lattice parameters and porosities within the sample, improving its hardness. Full article
(This article belongs to the Special Issue Nanostructured and Nanocomposite Materials for Electromagnetic and Sensing Applications)
►▼ Show Figures

Figure 1

15 pages, 8638 KiB  
Article
Microstructural Changes Influencing the Magnetoresistive Behavior of Bulk Nanocrystalline Materials
by Stefan Wurster, Martin Stückler, Lukas Weissitsch, Timo Müller and Andrea Bachmaier
Appl. Sci. 2020, 10(15), 5094; https://0-doi-org.brum.beds.ac.uk/10.3390/app10155094 - 24 Jul 2020
Cited by 9 | Viewed by 1908
Abstract
Bulk nanocrystalline materials of small and medium ferromagnetic content were produced using severe plastic deformation by high-pressure torsion at room temperature. Giant magnetoresistive behavior was found for as-deformed materials, which was further improved by adjusting the microstructure with thermal treatments. The adequate range [...] Read more.
Bulk nanocrystalline materials of small and medium ferromagnetic content were produced using severe plastic deformation by high-pressure torsion at room temperature. Giant magnetoresistive behavior was found for as-deformed materials, which was further improved by adjusting the microstructure with thermal treatments. The adequate range of annealing temperatures was assessed with in-situ synchrotron diffraction measurements. Thermally treated Cu–Co materials show larger giant magnetoresistance after annealing for 1 h at 300 °C, while for Cu-Fe this annealing temperature is too high and decreases the magnetoresistive properties. The improvement of magnetoresistivity by thermal treatments is discussed with respect to the microstructural evolution as observed by electron microscopy and ex-situ synchrotron diffraction measurements. Full article
(This article belongs to the Special Issue Nanostructured and Nanocomposite Materials for Electromagnetic and Sensing Applications)
►▼ Show Figures

Figure 1

7 pages, 2081 KiB  
Article
Infrared Absorption Efficiency Enhancement of the CMOS Compatible Thermopile by the Special Subwavelength Hole Arrays
by Yun-Ying Yeh, Chih-Hsiung Shen and Chi-Feng Chen
Appl. Sci. 2020, 10(8), 2966; https://0-doi-org.brum.beds.ac.uk/10.3390/app10082966 - 24 Apr 2020
Cited by 2 | Viewed by 2067
Abstract
The infrared absorption efficiency (IAE) enhancement of the complementary-metal-oxide-semiconductorCMOS compatible thermopile with special subwavelength hole arrays in an active area was numerically investigated by the finite-difference time-domain method. It was found that the absorption efficiency of that thermopile was enhanced when the subwavelength [...] Read more.
The infrared absorption efficiency (IAE) enhancement of the complementary-metal-oxide-semiconductorCMOS compatible thermopile with special subwavelength hole arrays in an active area was numerically investigated by the finite-difference time-domain method. It was found that the absorption efficiency of that thermopile was enhanced when the subwavelength rectangular-hole array added extra rectangular-columnar or ellipse-columnar structures in the hole array. The simulation results show that the IAEs of the better cases for the three types of rectangular columns and three ellipse columns were increased by 14.4% and 15.2%, respectively. Such special subwavelength hole arrays can be improved by the IAE of the CMOS compatible thermopile. Full article
(This article belongs to the Special Issue Nanostructured and Nanocomposite Materials for Electromagnetic and Sensing Applications)
►▼ Show Figures

Figure 1

11 pages, 1469 KiB  
Article
Stress-Induced Magnetic Anisotropy Enabling Engineering of Magnetic Softness and GMI Effect of Amorphous Microwires
by Paula Corte-León, Ahmed Talaat, Valentina Zhukova, Mihail Ipatov, Juan María Blanco, Julián Gonzalez and Arcady Zhukov
Appl. Sci. 2020, 10(3), 981; https://0-doi-org.brum.beds.ac.uk/10.3390/app10030981 - 03 Feb 2020
Cited by 11 | Viewed by 2323
Abstract
Stress-annealing enabled a considerable improvement in the GMI effect in both Fe- and Co-rich glass-coated microwires. Additionally, a remarkable magnetic softening can be achieved in stress-annealed Fe-rich microwires. Observed stress-annealing induced magnetic anisotropy is affected by annealing conditions (temperatures and stresses applied during [...] Read more.
Stress-annealing enabled a considerable improvement in the GMI effect in both Fe- and Co-rich glass-coated microwires. Additionally, a remarkable magnetic softening can be achieved in stress-annealed Fe-rich microwires. Observed stress-annealing induced magnetic anisotropy is affected by annealing conditions (temperatures and stresses applied during annealing). The highest GMI ratio up to 310% was obtained in stress-annealed Co-rich microwires, although they presented rectangular hysteresis loops. A remarkable magnetic softness and improved GMI ratio over a wide frequency range were obtained in stress-annealed Fe-rich microwires. Irregular magnetic field dependence observed for some stress-annealing conditions is attributed to the contribution of both the inner axially magnetized core and outer shell, with transverse magnetic anisotropy. Full article
(This article belongs to the Special Issue Nanostructured and Nanocomposite Materials for Electromagnetic and Sensing Applications)
►▼ Show Figures

Graphical abstract

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop