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  Subjects -> ELECTRONICS (Total: 202 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advanced Materials Technologies     Hybrid Journal  
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 9)
Advances in Electronics     Open Access   (Followers: 99)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Power Electronics     Open Access   (Followers: 39)
Advancing Microelectronics     Hybrid Journal  
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 28)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 15)
Australian Journal of Electrical and Electronics Engineering     Hybrid Journal  
Batteries     Open Access   (Followers: 9)
Batteries & Supercaps     Hybrid Journal   (Followers: 4)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 31)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 2)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 9)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 304)
ECTI Transactions on Computer and Information Technology (ECTI-CIT)     Open Access  
ECTI Transactions on Electrical Engineering, Electronics, and Communications     Open Access   (Followers: 2)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 123)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 108)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 103)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage     Hybrid Journal   (Followers: 1)
Energy Storage Materials     Full-text available via subscription   (Followers: 4)
EPE Journal : European Power Electronics and Drives     Hybrid Journal  
EPJ Quantum Technology     Open Access   (Followers: 1)
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 100)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 81)
IEEE Embedded Systems Letters     Hybrid Journal   (Followers: 56)
IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology     Hybrid Journal   (Followers: 2)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 52)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Letters on Electromagnetic Compatibility Practice and Applications     Hybrid Journal   (Followers: 3)
IEEE Magnetics Letters     Hybrid Journal   (Followers: 7)
IEEE Nanotechnology Magazine     Hybrid Journal   (Followers: 42)
IEEE Open Journal of Circuits and Systems     Open Access   (Followers: 2)
IEEE Open Journal of Industry Applications     Open Access   (Followers: 2)
IEEE Open Journal of the Industrial Electronics Society     Open Access   (Followers: 2)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 77)
IEEE Pulse     Hybrid Journal   (Followers: 5)
IEEE Reviews in Biomedical Engineering     Hybrid Journal   (Followers: 22)
IEEE Solid-State Circuits Letters     Hybrid Journal   (Followers: 2)
IEEE Solid-State Circuits Magazine     Hybrid Journal   (Followers: 13)
IEEE Transactions on Aerospace and Electronic Systems     Hybrid Journal   (Followers: 363)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 74)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 59)
IEEE Transactions on Autonomous Mental Development     Hybrid Journal   (Followers: 8)
IEEE Transactions on Biomedical Engineering     Hybrid Journal   (Followers: 38)
IEEE Transactions on Broadcasting     Hybrid Journal   (Followers: 13)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 26)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 45)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Geoscience and Remote Sensing     Hybrid Journal   (Followers: 221)
IEEE Transactions on Haptics     Hybrid Journal   (Followers: 4)
IEEE Transactions on Industrial Electronics     Hybrid Journal   (Followers: 76)
IEEE Transactions on Industry Applications     Hybrid Journal   (Followers: 40)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Learning Technologies     Full-text available via subscription   (Followers: 12)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 79)
IEEE Transactions on Services Computing     Hybrid Journal   (Followers: 4)
IEEE Transactions on Signal and Information Processing over Networks     Hybrid Journal   (Followers: 14)
IEEE Transactions on Software Engineering     Hybrid Journal   (Followers: 79)
IEEE Women in Engineering Magazine     Hybrid Journal   (Followers: 11)
IEEE/OSA Journal of Optical Communications and Networking     Hybrid Journal   (Followers: 16)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Energy Systems Integration     Open Access   (Followers: 1)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 59)
IET Smart Grid     Open Access   (Followers: 1)
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Technology Research Journal Phranakhon Rajabhat University     Open Access  
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 12)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 5)
International Journal of Control     Hybrid Journal   (Followers: 11)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 3)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Hybrid Intelligence     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 16)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 10)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 25)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 4)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 12)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 37)
Journal of Electrical Bioimpedance     Open Access  
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 8)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 9)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronic Science and Technology     Open Access   (Followers: 1)
Journal of Electronics (China)     Hybrid Journal   (Followers: 5)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access   (Followers: 2)
Journal of Field Robotics     Hybrid Journal   (Followers: 3)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 182)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 10)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 10)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal   (Followers: 1)
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal   (Followers: 3)
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 11)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 31)
Journal of Power Electronics     Hybrid Journal   (Followers: 1)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer     Open Access  
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 6)
Microelectronics and Solid State Electronics     Open Access   (Followers: 28)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal   (Followers: 1)
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 9)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 2)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 4)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 11)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 6)
Revue Méditerranéenne des Télécommunications     Open Access  
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 56)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Solid State Electronics Letters     Open Access  
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 3)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Transactions on Electrical and Electronic Materials     Hybrid Journal   (Followers: 1)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 7)
Ural Radio Engineering Journal     Open Access   (Followers: 1)
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)

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Similar Journals
Journal Cover
IEEE Magnetics Letters
Journal Prestige (SJR): 0.532
Citation Impact (citeScore): 2
Number of Followers: 7  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1949-307X
Published by IEEE Homepage  [228 journals]
  • Optimum Unit Positioning in Spacecraft for Space Missions With Challenging
           DC Magnetic Cleanliness Requirements
    • Authors: Sotirios T. Spantideas;Elpida G. Chatzineofytou;Christos N. Capsalis;
      Pages: 1 - 5
      Abstract: The spacecraft-level magnetic budget in the framework of dc magnetic cleanliness programs of space missions is studied and analyzed. This analysis follows the unit-level magnetic characterization test campaigns that are performed in space missions with challenging magnetic cleanliness requirements. Taking into consideration the output of these test results, the total magnetic signature of the spacecraft may be estimated at the location of sensitive instruments or potential magnetically susceptible units that are included in the space mission. In this letter, a method that significantly reduces the total magnetic field generated by the spacecraft is investigated. The purpose of the algorithm is to minimize the system-level magnetic signature at specific points of interest and at areas around the spacecraft in order to conform to the cleanliness requirements. This analysis is based on repositioning the equipment inside the spacecraft structure in order to reduce the total generated magnetic field. Indicative simulations of the synthetic magnetic sources are carried out, validating the effectiveness of the method.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Electromagnetic Induction Imaging of Metallic Objects at Multiple Depths
    • Authors: Maryam Ravan;Reza K. Amineh;Anwar Hussein;Oleksiy Simanov;Ashutosh Agarwal;
      Pages: 1 - 5
      Abstract: In this letter, a novel approach is presented for imaging of metallic objects based on induction sensing. The approach relies on the concept of collection of the point-spread function (PSF) in a linear space-invariant system. For this purpose, the responses of small objects are measured a priori to serve as the PSFs of the imaging system. Then, these PSFs are employed in a test scenario in which the responses of unknown objects distributed over multiple depths are measured and inverted to reconstruct two-dimensional (2-D) images at those depths. The stack of these 2-D images provides a 3-D image. The image reconstruction is fast due to the use of forward and inverse Fourier transforms. This imaging approach is validated via the use of off-the-shelf components.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Magneto-Optical Spectroscopy of (CoFeB) x -(Al-O)100- x Nanocomposites:
           Evidence of Superferromagnetism
    • Authors: Elena Alexandrovna Gan'shina;Alexander Granovsky;Dmitriy Shevyakov;Alexander Sitnikov;Erkki Lahderanta;Vladimir Rylkov;
      Pages: 1 - 4
      Abstract: We present results of magneto-optical investigations of (CoFeB)x-(Al-O)100-x film nanocomposites in transverse Kerr effect (TKE) geometry in the spectral range 0.5–4.0 eV and magnetic field up to 3.1 kOe. Nanocomposites were deposited onto a glass-ceramic substrate by ion-beam sputtering. According to the data obtained from resistivity measurements, the percolation threshold is about xper ≈ 57 at.%, and the critical concentration for metal–insulator transition is about xc ≈ 48 at.%. The TKE response at room temperature strongly depends on the wavelength of light, applied magnetic field H, and the volume metallic fraction. The TKE field dependence is almost linear to H = 3.1 kOe and identical for 1.57 and 3.06 eV at x ≤ 30 at.%. It means that at x ≤ 30 at.%, nanocomposites consist of only superparamagnetic granules. With increasing concentration x, the TKE field dependence at 3.06 eV becomes more and more similar to the field dependence of ferromagnetic material, but it is not the case at 1.57 eV. For example, the TKE signal for x = 43 at.% measured at 3.06 eV saturates at H = 100 Oe, which indicates the presence of large ferromagnetic regions below xc. For the same composition, the TKE field depen-ence measured at 1.57 eV does not saturate and resembles more a superparamagnetic response. The same difference is observed also at x = 49 at.%. The presence of large ferromagnetic regions in completely insulating samples together with separate superparamagnetic granules can be considered as an evidence of superferromagnetic ordering in the vicinity of xc.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • $_{{x}}$ Co1– $_{{x}}$ )17+Compounds&rft.title=IEEE+Magnetics+Letters&rft.issn=1949-307X&rft.date=2020&rft.volume=11&rft.spage=1&rft.epage=5&rft.aulast=Pastushenkov;&rft.aufirst=Elena&rft.au=Elena+M.+Semenova;Marina+B.+Lyakhova;Artem+I.+Sinkevich;Alexey+Yu+Karpenkov;Yuriy+G.+Pastushenkov;">Magnetic Domain Structure of Y2(Fe $_{{x}}$ Co1– $_{{x}}$ )17 Compounds
    • Authors: Elena M. Semenova;Marina B. Lyakhova;Artem I. Sinkevich;Alexey Yu Karpenkov;Yuriy G. Pastushenkov;
      Pages: 1 - 5
      Abstract: The magnetic domain structure of Y2(Fe$_{x}$Co1–$_{x}$)17 (0.03 < $ x $ < 0.88) intermetallic compounds was investigated via magnetic force microscopy. It is experimentally shown that in the range of $x$ = 0.07 − 0.5, the surface magnetic domain structure of the single crystals reveals domains with typical uniaxial magnetocrystalline anisotropy configuration. The values of the surface energy density of the domain walls in these samples vary from 21.9 × 10−3 to 31.7 × 10−3 J/m2. The surface domain structure of Y2(Fe$_{x}$Co1–$_{x}$)17 ($ x $> 0.5) single crystals with easy-plane-type anisotropy is described.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • On-Chip DNA Analysis of Tuberculosis Based on Magnetic Nanoparticle
           Clustering Induced by Rolling Circle Amplification Products
    • Authors: Gabriel Antonio S. Minero;Elisabeta Tefiku;Francesca Garbarino;Jeppe Fock;Mikkel Fougt Hansen;
      Pages: 1 - 5
      Abstract: We present on-chip implementation of an isothermal nucleic acid amplification assay with optomagnetic detection. Isothermal rolling circle amplification (RCA) was designed for the highly specific detection of a single point mutation in the subsequence of the katG catalase peroxidase gene responsible for resistance against the antibiotic isoniazid in Mycobacterium tuberculosis. The assay was integrated using streptavidin-coated magnetic microbeads (MMBs) as a movable substrate to transport the synthetic katG target and products between the sequential processing steps. RCA products were detected via optomagnetic measurements of the binding of functionalized magnetic nanoparticles (MNPs). Binding of MNPs to RCA products leads to an increase of their hydrodynamic size and consequently a shift of the optomagnetic signal to lower frequencies. We first analyzed the affinity of DNA probes used for target capture on MMBs and binding of MNPs to RCA products, respectively. This enabled us to choose conditions where amplification products were released from the MMBs and where their binding to MNPs was optimal. The optimized assay was transferred to a polymer chip with three connected chambers filled with reaction buffers for capture, RCA, and detection. The chip was operated in a setup integrating temperature control, transport of the DNA on magnetic carriers, and dose-dependent detection of MNP clustering. For a total assay time of about 2 h, we demonstrate specific detection of the antibiotic resistance in a synthetic tuberculosis DNA target with a detection limit of 4 pM.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Ferromagnetic Microwire Systems as a High-Gradient Magnetic Field Source
           for Magnetophoresis
    • Authors: Anastaiya Gurevich;Anna V. Beklemisheva;Ekaterina Levada;Valeria Rodionova;Larissa V. Panina;
      Pages: 1 - 5
      Abstract: The use of amorphous ferromagnetic microwires has potential for applications in biomedicine and biophysics. Microwire arrays create magnetic fields that are characterized by strong spatial gradients. A system of ferromagnetic microwires with magnetizations across the diameter may efficiently accumulate paramagnetic particles along the wire due to forced diffusion. For typical system parameters, the particles concentration at the wire surface increases more than twice for a characteristic time of 30 s.  A pair of closely spaced microwires with diametric magnetizations (referred to as a dipole pair) yields a unique potential landscape with a two-dimensional minimum. The possibility of levitation of diamagnetic particles just above the dipole pair array was numerically demonstrated.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Highly Bendable Planar Hall Resistance Sensor
    • Authors: Mijin Kim;Sunjong Oh;Wooseong Jeong;Artem Talantsev;Taehyeong Jeon;Richa Chaturvedi;Sungwon Lee;Cheolgi Kim;
      Pages: 1 - 5
      Abstract: A set of planar Hall resistance (PHR) sensors was fabricated on rigid and flexible substrates. High signal-to-noise ratio, low offset voltage, nearly zero hysteresis of signal, and excellent linearity were demonstrated for sensors, based on Ta (5 nm)/NiFe (10 nm)/IrMn (10 nm)/Ta (5 nm) thin films, grown on polydimethylsiloxane (PDMS) and parylene C polymeric substrates. The effect of bending on the performance of the PHR sensors was studied. The effect of bending deformation on the performance characteristics of the fabricated PHR sensors is reversible until the bending angle reaches a critical one. The critical bending angle is shown to depend on the substrate composition. An irreversible deformation of a sensor's film, accompanied by the formation of wrinkles and cracks, occurs when the bending angle exceeds the critical one. This deformation originates from the difference between the values of Young's modulus of the substrate and the film. The bending stability of a PHR sensor, grown on PDMS substrate, was improved by deposition of 1 µm of parylene C as a buffer and as a capping layer. The performance characteristics of the designed bendable PHR sensors are compatible with requirements for applications in wearable electronics and medical diagnostic devices.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Study of Surface Spin-Polarized Electron Accumulation in Topological
           Insulators Using Scanning Tunneling Microscopy
    • Authors: Siddharth Tyagi;Michael Dreyer;David Bowen;Dan Hinkel;Patrick J. Taylor;Adam L. Friedman;Robert E. Butera;Charles Krafft;Isaak Mayergoyz;
      Pages: 1 - 4
      Abstract: We report the results of scanning tunneling microscopy experiments using iron-coated tungsten tips and current-carrying bismuth selenide (Bi$_2$Se$_3$) samples. Asymmetry in tunneling currents with respect to the change in the direction of bias currents through Bi$_2$Se$_3$ samples has been measured. It is argued that this asymmetry is the manifestation of surface spin-polarized electron accumulation caused by the 90$^circ$ electron spin–momentum locking in the topologically protected surface current mode. It is demonstrated that the manifestation of surface spin-polarized electron accumulation is enhanced by tin doping of Bi$_2$Se$_3$ samples. Furthermore, we noted the appearance of spin-dependent density of states in current-carrying Bi$_2$Se$_3$ samples.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Enhancement of Saturation Magnetization and Remanence of BaFe12O19
           Materials Prepared by NaCl–KCl and Hexamine as Flux
    • Authors: Shereen Selvaraj;Uma Gandhi;Umapathy Mangalanathan;L. John Berchmans;
      Pages: 1 - 5
      Abstract: Hexagonal platelet barium ferrite was produced through a two-step molten salt synthesis calcined at 850 °C for 5 h with NaCl–KCl as flux, followed by calcination at 400 °C for 5 h with hexamine. Influence of NaCl–KCl and hexamine on the structural, phase composition, surface morphology, and magnetic properties of BaFe12O19 was studied by X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric/differential analysis, scanning electron microscopy, and a superconducting quantum interference device. The particles exhibited M-type barium hexaferrite nanoparticles with a product yield of 97.8% with a mean crystallite size of 81 nm for NaCl–KCl and 50 nm for hexamine. The infrared spectrum showed tetrahedral and octahedral positions in the absorption bands of hexagonal ferrite. As the atomic ratio of Ba:Fe:O is found to be 1:12.3:17.6, which is close to the stoichiometric ratio of BaFe12O19, it confirms the hexagonal structure of the sample. The plates are found to agglomerate, and variation in particle size was observed using scanning electron microscopy. The samples revealed better magnetic properties with a high saturation magnetization of 165.3 emu/g, higher remanence of 58 emu/g, coercivity of 929 Oe, and a squareness ratio of 0.35. This investigation was performed to examine the microstructure and the effect of crystallinity of the submicrometer BaFe12O19 powders on magnetic properties. This study also provides a promising method and total processing parameters to synthesize hard ferrite powders with improved hard magnetic prope-ties and fine crystallite size.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Hard Magnetic Properties of Co-Rich Microwires Crystallized by Current
           Annealing
    • Authors: Svetlana A. Evstigneeva;Makhsudsho G. Nematov;Alexander Omelyanchik;Nikolai A. Yudanov;Valeria V. Rodionova;Larissa V. Panina;
      Pages: 1 - 5
      Abstract: Micromagnets in the form of microwires have become a subject of interest in various applications including magnetic field bias elements in miniature actuators, sensors, and manipulators. While the preparation of hard magnetic microwires with sufficiently high magnetization is a difficult task, it can be achieved by using specific crystallization techniques. We present a technique for the fabrication of micromagnets via controlled heat treatment of amorphous microwires using an electrical current. This crystallization technique converts a Co-rich microwire from a soft to a hard magnetic material. A large increase in coercivity (up to 580 Oe) is obtained after optimal current annealing (100 mA during 30–60 min). The crystallization consists of fine grains of mainly hcp-Co with an average size of 74 nm.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Effect of Direct-Current Bias on the Perpendicular Giant Magnetoimpedance
           of a Meander-Line Multilayer Structure
    • Authors: Tao Wang;Yuyi Chen;Yi He;Bicong Wang;
      Pages: 1 - 5
      Abstract: While the effect of bias direct currents on longitudinal giant magnetoimpedance (GMI) has been well studied, there have been very few investigations of their effect on perpendicular GMI. We report an experimental investigation of the influence of bias direct currents on perpendicular GMI in meander-line NiFe/Cu/NiFe/Cu/Cr films. The low-field sensitivity and linearity of perpendicular GMI both increased with the use of bias currents for high frequencies (>5 MHz), and the field-dependent linear range of the impedance became wider with increasing frequency. This lays a solid foundation for the development of low-field GMI sensors with high sensitivity and linearity, which are particularly well suited for the detection of weak perpendicular magnetic fields.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Development of Rat-Scale Magnetic Particle Spectroscopy for Functional
           Magnetic Particle Imaging
    • Authors: Minh Phu Bui;Tuan-Anh Le;Jungwon Yoon;
      Pages: 1 - 5
      Abstract: Magnetic particle imaging (MPI) is a fast and sensitive technique for imaging of magnetic nanoparticle (MNP) concentrations. MPI directly measures and maps the particle concentration over a measured spatial position. Functional MPI (fMPI) is a specific application of MPI that aims to detect the change of cerebral blood volume (CBV) through imaging. Assuming that the concentration of MNPs in the CBV is uniform, the resultant concentration of MNPs can indicate the CBV changes. Magnetic particle spectroscopy (MPS) is basically a zero-dimensional MPI scanner which can be used to conduct spectroscopic studies and fMPI. In this letter, we suggest an MPS for fMPI with a bore size of 50 mm compatible with rat head dimensions. The system utilizes 0.015 T magnetic field at a frequency of 29.5 kHz and uses an integrated method to measure the small iron component of magnetic particles. Based on the integrated output signal, the MPS consisting of an excitation coil and a gradiometer coil with three parts—a receive coil, a cancellation coil, and a calibration coil—can detect down to 25 ng of Fe. The suggested MPS has demonstrated the achievement of sensitivity that is feasible for fMPI.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
  • Magneto-Inductive Magnetic Gradient Tensor System for Detection of
           Ferromagnetic Objects
    • Authors: Huan Liu;Xiaobin Wang;Hongpeng Wang;Junchi Bin;Haobin Dong;Jian Ge;Zheng Liu;Zhiwen Yuan;Jun Zhu;Xinqun Luan;
      Pages: 1 - 5
      Abstract: A miniature magnetic gradient tensor system may be used in small spacecraft for mineral prospecting and detection of unexploded explosive ordnance. The system consists of a magneto-inductive (MI) sensors array, a signal extraction circuit, and a microcontroller. A magnetic gradient full-tensor configuration utilizes four MI sensors arranged in a planar cross structure and is employed to minimize orientation and orthogonality errors. The system's performance was checked by data validation and magnetic anomaly detection. Numerous experimental results demonstrate that the system is able to detect a low-amplitude magnetic field as low as 8.28 nT at 10 Hz, with a typical noise floor of 0.235 nT/Hz$^{1/2}$ at 1 Hz. The system can identify nearby ferromagnetic objects clearly, which indicates its feasibility for weak magnetic anomaly detection.
      PubDate: 2020
      Issue No: Vol. 11 (2020)
       
 
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