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Artykuły w czasopismach na temat „Electronic Structure - Novel Magnetic Systems”

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Data publikacji: 7 września 2023

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1

Grechnev, G. E., A. S. Panfilov, A. V. Fedorchenko, et al. "Electronic Structure and Magnetism of Fe-based Superconductors." Ukrainian Journal of Physics 57, no. 2 (2012): 171. http://dx.doi.org/10.15407/ujpe57.2.171.

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Ab initio calculations of the electronic structures are carried out for the novel FeSe1–xTex superconductors to explain the experimentally found anomalous magnetic properties in the normal state. The calculations have shown that FeSe1–xTex systems are close to a magnetic instability with dominating enhanced spin paramagnetism. The magnetic susceptibility is found to increase gradually with the Te content. The temperature dependences of the magnetic susceptibility χ and its anisotropy ∆ χ = χ║ – χ┴ are investigated for FeSe, and a growth of the susceptibility with the temperature is revealed in

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Perez de Lara, David. "Hybrid Superconducting/Magnetic Multifunctional Devices in Two-Dimensional Systems." Physchem 2, no. 4 (2022): 347–56. http://dx.doi.org/10.3390/physchem2040025.

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The emergence of unexpected properties in two-dimensional materials, interfaces, and nanostructured materials opens an exciting framework for exploring new devices and applications. Recent advances in materials design and the nano structurization of novel, low-dimensional materials, surfaces, and interfaces offer a novel playground to design efficient multifunctional materials-based devices. Low-dimensional materials exhibit peculiarities in their electronic, magnetic, and optical properties, changing with respect to the bulk when they are layered down to a single layer, in addition to their h

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Kadioglu, Yelda, Ilkay Ozdemir, Olcay Üzengi Aktürk, Gökhan Gökoğlu, Ümit Akıncı, and Ethem Aktürk. "Tuning the electronic structure of RhX3 (X = Cl, Br, I) nonmagnetic monolayers: effects of charge-injection and external strain." Physical Chemistry Chemical Physics 22, no. 8 (2020): 4561–73. http://dx.doi.org/10.1039/c9cp06240h.

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The electronic and magnetic nature of novel semiconducting RhX<sub>3</sub> (X = Cl, Br, I) monolayer systems, which are dynamically and thermally stable, can be tuned by electrical and mechanical modifications.

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4

KAN, ERJUN, ZHENYU LI, and JINLONG YANG. "MAGNETISM IN GRAPHENE SYSTEMS." Nano 03, no. 06 (2008): 433–42. http://dx.doi.org/10.1142/s1793292008001350.

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Graphene has attracted great interest in materials science, owing to its novel electronic structures. Recently, magnetism discovered in graphene-based systems has opened up the possibility of their spintronics application. This paper provides a comprehensive review of the magnetic behaviors and electronic structures of graphene systems, including two-dimensional graphene, one-dimensional graphene nanoribbons, and zero-dimensional graphene nanoclusters. Theoretical research suggests that such metal-free magnetism mainly comes from the localized states or edges states. By applying an external el

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Valenzuela, Raúl. "Novel Applications of Ferrites." Physics Research International 2012 (March 15, 2012): 1–9. http://dx.doi.org/10.1155/2012/591839.

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The applications of ferrimagnetic oxides, or ferrites, in the last 10 years are reviewed, including thin films and nanoparticles. The general features of the three basic crystal systems and their magnetic structures are briefly discussed, followed by the most interesting applications in electronic circuits as inductors, in high-frequency systems, in power delivering devices, in electromagnetic interference suppression, and in biotechnology. As the field is considerably large, an effort has been made to include the original references discussing each particular application on a more detailed ma

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6

Ding, Dawei, Dawei Li, Jing Xia, and Zhuang Li. "Novel optimization strategies for isolation structure design in MIMO systems." IEICE Electronics Express 17, no. 8 (2020): 20200006. http://dx.doi.org/10.1587/elex.17.20200006.

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Zhang, Zijia, Jun Liu, and Yansong Li. "Design and Analysis of a Multi-Input Multi-Output System for High Power Based on Improved Magnetic Coupling Structure." Energies 15, no. 5 (2022): 1684. http://dx.doi.org/10.3390/en15051684.

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Conventional inductive contactless power transfer (ICPT) systems have only one energy transmission path, which makes it challenging to meet the power transmission requirements of high-power and reliability. This study proposes a novel multiple-input multiple-output (MIMO) ICPT system. The three-dimensional finite element analysis tool COMSOL is utilised to study various magnetic coupling structures, analyse the influence of cross-coupling between coils on the same side, design the circuit based on this, propose a parameter configuration method for resonance compensation, and, finally, build an

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8

Ying, Yu, Ke Xu, Guang-Yuan Si, and Ji-Zhong Zhao. "Simulation and Experiment Study of Chain Aggregate Structure in Magnetic Fluid." Integrated Ferroelectrics 201, no. 1 (2019): 110–19. http://dx.doi.org/10.1080/10584587.2019.1668695.

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Magnetic fluid is a novel magnetic functional material. The magneto-optical properties are displayed due to the tunability. In the paper, the material characterization was studied theoretically and experimentally. In the simulation, a rod-like magnetic nanoparticle model was used to simulate the motion of the magnetic particles. In the experiment, an experimental setup was designed to observe the change of the microstructure. The results showed that the magnetic particles can be aggregated to form several magnetic chains when the applied magnetic field exceeded 100 Oe. The novel magneto-optica

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9

Parks, Daniel, Karim Niang, Yuri Janssen, and Jack W. Simonson. "Synthesis and Crystal Structure of Zr3V3GeSn4." Crystals 13, no. 5 (2023): 744. http://dx.doi.org/10.3390/cryst13050744.

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Quantum fluctuations inherent in electronic systems positioned close to magnetic instabilities can lead to novel collective phenomena. One such material, β-Ti6Sn5, sits close to ferromagnetic (FM) instability and can be pushed to an itinerant FM-ordered state with only minute magnetic or non-magnetic doping. The binary nature of this compound, however, limits the tuning variables that can be applied to study any emergent physics, which are likely to be sensitive to the introduction of chemical disorder.Accordingly, we grew high-quality single crystals of a new quaternary compound Zr3V3GeSn4 fr

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10

Yang, Bo, Xiaoyong Gao, and Cheng Li. "A Novel Micromachined Z-axis Torsional Accelerometer Based on the Tunneling Magnetoresistive Effect." Micromachines 11, no. 4 (2020): 422. http://dx.doi.org/10.3390/mi11040422.

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A novel micromachined z-axis torsional accelerometer based on the tunneling magnetoresistive effect is presented in this paper. The plane main structure bonded with permanent magnetic film is driven to twist under the action of inertial acceleration, which results in the opposite variation of the magnetic field intensity. The variation of the magnetic field is measured by two differential tunneling magnetoresistive sensors arranged on the top substrate respectively. Electrostatic feedback electrodes plated on the bottom substrate are used to revert the plane main structure to an equilibrium st

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11

Qian, Leping, and Decai Li. "Use of Magnetic Fluid in Accelerometers." Journal of Sensors 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/375623.

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Magnetic fluid accelerometer is designed based on the special physical properties of magnetic fluid. Compared with the conventional acceleration sensors, magnetic fluid accelerometer has stronger shock resistance capability, higher sensitivity, lower energy consumption, and better performance in low frequency response. It satisfies the growing requirements of acceleration sensors. In this paper, the dynamic model and the theory of magnetic fluid accelerometers were presented. The structure characteristics of typical magnetic fluid accelerometers were investigated, and the development trend of

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12

Vinko, Davor, Domagoj Bilandžija, and Vanja Mandrić Radivojević. "Optimization of a Two-Layer 3D Coil Structure with Uniform Magnetic Field." Wireless Power Transfer 2021 (October 14, 2021): 1–11. http://dx.doi.org/10.1155/2021/6303628.

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Conventional magnetically coupled resonant wireless power transfer systems are faced with resonant frequency splitting phenomena and impedance mismatch when a receiving coil is placed at misaligned position. These problems can be avoided by using uniform magnetic field distribution at receiving plane. In this paper, a novel 3D transmitting coil structure with improved uniform magnetic field distribution is proposed based on a developed optimization method. The goal is to maximize the average magnetic field strength and uniform magnetic field section of the receiving plane. Hence, figures of me

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13

Abboud, M., D. H. Ozbey, M. E. Kilic, and E. Durgun. "Investigation of anisotropic mechanical, electronic, and charge carrier transport properties of germanium-pnictogen monolayers." Journal of Physics D: Applied Physics 55, no. 18 (2022): 185302. http://dx.doi.org/10.1088/1361-6463/ac4cf9.

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Abstract Recently, novel two-dimensional (2D) GeP and GeAs systems have been fabricated by mechanical exfoliation and utilized in various applications. These developments have brought the 2D germanium-pnictogens, C2/m-GeX (X = N, P, As, Sb, and Bi) structures into the limelight. In this study, we systematically investigate the structural, mechanical, electronic, and charge carrier transport properties of GeX monolayers by using first-principles methods. Our results show that the considered systems are dynamically stable and possess anisotropic physical properties. Examined structures are found

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14

Liu, Ming, and Nian X. Sun. "Voltage control of magnetism in multiferroic heterostructures." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, no. 2009 (2014): 20120439. http://dx.doi.org/10.1098/rsta.2012.0439.

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Electrical tuning of magnetism is of great fundamental and technical importance for fast, compact and ultra-low power electronic devices. Multiferroics, simultaneously exhibiting ferroelectricity and ferromagnetism, have attracted much interest owing to the capability of controlling magnetism by an electric field through magnetoelectric (ME) coupling. In particular, strong strain-mediated ME interaction observed in layered multiferroic heterostructures makes it practically possible for realizing electrically reconfigurable microwave devices, ultra-low power electronics and magnetoelectric rand

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15

Werner, Robin, Jaroslaw Kita, Michael Gollner, Florian Linseis, and Ralf Moos. "Novel, low-cost device to simultaneously measure the electrical conductivity and the Hall coefficient from room temperature up to 600 °C." Journal of Sensors and Sensor Systems 10, no. 1 (2021): 71–81. http://dx.doi.org/10.5194/jsss-10-71-2021.

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Abstract. A novel measurement device for simultaneous high temperature measurements of the electrical conductivity and the Hall coefficient has been developed. Simulations were used to design a suitable screen-printed planar platinum heating structure that generates temperatures of up to 600 ∘C by Joule heating. Simulations of the temperature distribution have been validated using thermal imaging. With the hardware setup of two permanent magnetic yoke systems with a magnetic flux density of ±760 mT, the electrical conductivity and the charge carrier densities of a silicon wafer and a gold film

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16

Jadaun, Priyamvada, and Bart Soreé. "Review of Orbital Magnetism in Graphene-Based Moiré Materials." Magnetism 3, no. 3 (2023): 245–58. http://dx.doi.org/10.3390/magnetism3030019.

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Recent years have seen the emergence of moiré materials as an attractive platform for observing a host of novel correlated and topological phenomena. Moiré heterostructures are generated when layers of van der Waals materials are stacked such that consecutive layers are slightly mismatched in their lattice orientation or unit cell size. This slight lattice mismatch gives rise to a long-wavelength moiré pattern that modulates the electronic structure and leads to novel physics. The moiré superlattice results in flat superlattice bands, electron–electron interactions and non-trivial topology tha

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17

Zhao, Xiang, Mu Zhang, Wei Pan, Rui Yang, and Xu-Dong Sun. "Construction of N-Doped Hollow Carbon Nanospheres Through a Novel Self-Template Strategy as High-Performance Electrode Materials for Supercapacitors." Journal of Nanoelectronics and Optoelectronics 16, no. 8 (2021): 1189–98. http://dx.doi.org/10.1166/jno.2021.3066.

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N-doped hollow carbon nanospheres (NHCSs) with mesopores-rich hierarchical structure have been synthesized by a self-template strategy using resorcinol-formaldehyde resin as precursors. The crucial point of this strategy is the selective dissolution of acetones for oligomers and subsequent rearrangement dependent on the structure-directing agent (CTAB). The large specific surface area (1325.0 m2 g−1), abundant and accessible mesopores (6.6 nm), unexpected nitrogen doping concentration (3.5 wt.%), and favorable graphitization (0.88), enable the as-prepared NHCSs to be a candidate for energy sto

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18

Olivas, Richard, Rudy Salas, Dan Muse, et al. "Structural Electronics through Additive Manufacturing and Micro-Dispensing." International Symposium on Microelectronics 2010, no. 1 (2010): 000940–46. http://dx.doi.org/10.4071/isom-2010-tha5-paper6.

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Implementing electronics systems that are conformal with curved and complex surfaces is difficult if not impossible with traditional fabrication techniques, which require stiff, two dimensional printed circuit boards (PCB). Flexible copper based fabrication is currently available commercially providing conformance, but not simultaneously stiffness. Consequently, these systems are susceptible to reliability problems if bent or stretched repeatedly. The integration of Additive Manufacturing (AM) combined with Direct Print (DP) micro-dispensing can provide shapes of arbitrary and complex form whi

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19

Yao, Weichong, Junwei Lu, Foad Taghizadeh, Feifei Bai, and Andrew Seagar. "Integration of SiC Devices and High-Frequency Transformer for High-Power Renewable Energy Applications." Energies 16, no. 3 (2023): 1538. http://dx.doi.org/10.3390/en16031538.

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This paper presents a novel structure of Integrated SiC MOSFETs with a high-frequency transformer (I-SiC-HFT) for various high-power isolated DC–DC converters. Several resonant converters are considered for integration in this paper, including the phase-shift full-bridge (PSFB) converter, inductor–inductor–capacitor (LLC) resonant converter, bidirectional PSFB converter, and capacitor–inductor–inductor–capacitor (CLLC) resonant converter. The applications of I-SiC-HFT are focused on V2G EV battery charging systems, energy storage in DC and AC microgrids, and renewable energy systems. SiC devic

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20

Padma, Chennagiri Rajarao, and Dr K. M. Ravikumar. "Low-cost Magnetic Resonance Console Architecture using an Open Source for Laboratory Scale Systems." International Journal of Innovative Technology and Exploring Engineering 12, no. 2 (2023): 26–32. http://dx.doi.org/10.35940/ijitee.b9413.0112223.

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MRI systems with proprietary hardware must use pulse programming, which is less expensive. Pulse programming consoles use Digital Signal Processor, Complex Programming Logic Device, and microcontrollers, which are typically restricted to particular architectures. General–purpose, extremely affordable electronics board featuring these architectures are now capable enough to be directly implemented in MRI consoles. Here we present the architectural details of various consoles with novel designs and their limitations. Finally, we propose a console design which was created utilising widely accessi

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21

Liimatainen, Helmi, Teemu O. Pennanen, and Juha Vaara. "1H chemical shifts in nonaxial, paramagnetic chromium(III) complexes — Application of novel pNMR shift theory." Canadian Journal of Chemistry 87, no. 7 (2009): 954–64. http://dx.doi.org/10.1139/v09-045.

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We present the first chemical application of the recent, general theory of the nuclear magnetic resonance shielding and chemical shift in paramagnetic compounds, to a set of nonaxial high-spin metallo-organic complexes. The theory is for the first time rigorous for systems of arbitrary spatial and spin symmetry, and introduces new structure to the isotropic, anisotropic but symmetric, and anisotropic and antisymmetric parts of the shielding tensor. We apply the theory using density functional calculations of the proton chemical shift in a family of nonaxial chromium(III) complexes possessing a

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Liu, Wenyao, Wei Li, Chenxi Liu, et al. "A High-Sensitivity Resonant Magnetic Sensor Based on Graphene Nanomechanical Resonator." Micromachines 13, no. 4 (2022): 628. http://dx.doi.org/10.3390/mi13040628.

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This paper presents a novel resonant magnetic sensor consisting of a graphene nanomechanical oscillator and magnetostrictive stress coupling structure, using Si/SiO2 substrate and Fe–Ga alloy, respectively. In this device, the deformation of the Fe–Ga alloy resulting from the external magnetic field changed the surface tension of the graphene, resulting in a significant change in the resonance frequency of graphene. Using the finite element analysis, it could be found that the response of the resonance frequency revealed a good linear relationship with the external magnetic field (along the x-

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Tan Fenli, 谭奋利, 曾晨欣 Zeng Chenxin, 冯安伟 Feng Anwei, 赵世家 Zhao Shijia та 季轶群 Ji Yiqun. "基于Dyson结构的新型快照式分光成像系统光学设计". Acta Optica Sinica 42, № 4 (2022): 0422002. http://dx.doi.org/10.3788/aos202242.0422002.

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Jūrėnas, Vytautas, Gražvydas Kazokaitis, and Dalius Mažeika. "3DOF Ultrasonic Motor with Two Piezoelectric Rings." Sensors 20, no. 3 (2020): 834. http://dx.doi.org/10.3390/s20030834.

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A novel design of a multiple degrees of freedom (multi-DOF) piezoelectric ultrasonic motor (USM) is presented in the paper. The main idea of the motor design is to combine the magnetic sphere type rotor and two oppositely placed ring-shaped piezoelectric actuators into one mechanism. Such a structure increases impact force and allows rotation of the sphere with higher torque. The main purpose of USM development was to design a motor for attitude control systems used in small satellites. A permanent magnetic sphere with a magnetic dipole is used for orientation and positioning when the sphere i

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Geng, Tao, Jihao Wang, Wenjie Meng, et al. "A Novel Atomically Resolved Scanning Tunneling Microscope Capable of Working in Cryogen-Free Superconducting Magnet." Micromachines 14, no. 3 (2023): 637. http://dx.doi.org/10.3390/mi14030637.

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We present a novel homebuilt scanning tunneling microscope (STM) with atomic resolution integrated into a cryogen-free superconducting magnet system with a variable temperature insert. The STM head is designed as a nested structure of double piezoelectric tubes (PTs), which are connected coaxially through a sapphire frame whose top has a sample stage. A single shaft made of tantalum, with the STM tip on top, is held firmly by a spring strip inside the internal PT. The external PT drives the shaft to the tip–sample junction based on the SpiderDrive principle, and the internal PT completes the s

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Alim, Mohammad A. "Electrical Characterization of Engineering Materials." Active and Passive Electronic Components 19, no. 3 (1996): 139–69. http://dx.doi.org/10.1155/1996/76148.

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Engineering material systems for smart components and novel device applications require a thorough understanding on the structure-property-processing relationships to optimize their performance. The factors determining performance characteristics of the multi-phase/component heterogeneous polycrystalline hybrid (MPCHPH) systems are not identical to devices based on single-crystal/single-junction (SCSJ) technology. Performing SCSJ-like data-analysis on the MPCHPH systems can lead to confusion in delineating simultaneously operative phenomena when “physical geometrical factors”are used in normal

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Cui, Yepu, Eui Min Jung, Ajibayo Adeyeye, Charles Lynch, Xuanke He, and Manos Tentzeris. "Additively Manufactured RF Devices for 5G, IoT, RFID, WSN, and Smart City Applications." International Journal of High Speed Electronics and Systems 29, no. 01n04 (2020): 2040016. http://dx.doi.org/10.1142/s0129156420400169.

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With the development of inkjet-/3D-/4D-printing additive manufacturing technologies, flexible 3D substrate with complex structures can be patterned with dielectric, conductive and semi-conductive materials to realize novel RF designs. This paper provides a review of state-of-the-art additively manufactured passive RF devices including antennas and frequency selective surfaces (FSS), couplers, where origami-inspired structure enables unprecedented capabilities of on-demand continuous frequency tunability and deployability. This paper also discusses additively manufactured active RF modules and

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Heya, Akira, and Katsuhiro Hirata. "Experimental Verification of Three-Degree-of-Freedom Electromagnetic Actuator for Image Stabilization." Sensors 20, no. 9 (2020): 2485. http://dx.doi.org/10.3390/s20092485.

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Image deteriorations due to vibrations have become a problem in autonomous systems such as unmanned aerial vehicles, robots, and autonomous cars. To suppress the vibration, a camera stabilizer using a gimbal mechanism is widely used. However, the size and weight of the system increase because the conventional image stabilization systems require some actuators and links to drive in multi-axes. In order to solve these problems, we proposed a novel three-degree-of-freedom (3DOF) electromagnetic actuator for image stabilization. The actuator can be driven by only three-phase and has a simple struc

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Bravo-García, Laura, Edurne S. Larrea, Beñat Artetxe, Luis Lezama, Juan M. Gutiérrez-Zorrilla, and María I. Arriortua. "Structural Transformations in the Thermal Dehydration of [Cu2(bpa)(btec)(H2O)4]n Coordination Polymer." Molecules 24, no. 9 (2019): 1840. http://dx.doi.org/10.3390/molecules24091840.

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Reactions between pyridinic ligands such as 1,2-bis(4-pyridyl)ethane (bpa) and transition metal cations are a very widespread technique to produce extended coordination polymers such as Metal-Organic Frameworks. In combination with a second ligand these systems could present different topologies and behaviors. In this context, the use of 1,2,4,5-benzenetetracarboxylic acid (H4btec) gave us a novel 2D compound, [Cu2(bpa)(btec)(H2O)4]n (1), which was prepared by microwave-assisted synthesis and structurally characterized by means of single crystal X-ray diffraction. Its thermal behavior was anal

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Zhu, Junhui, Siyuan Meng, Yong Wang, Ming Pang, Zhiping Hu, and Changhai Ru. "A Novel Monopolar Cross-Scale Nanopositioning Stage Based on Dual Piezoelectric Stick-Slip Driving Principle." Micromachines 13, no. 11 (2022): 2008. http://dx.doi.org/10.3390/mi13112008.

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The precise characterization and measurement of new nanomaterials and nano devices require in situ SEM nanorobotic instrumentation systems, which put forward further technical requirements on nanopositioning techniques of compact structure, cross-scale, nanometer accuracy, high vacuum and non-magnetic environment compatibility, etc. In this work, a novel cross-scale nanopositioning stage was proposed, which combined the advantages of piezoelectric stick-slip positioner and piezoelectric scanner techniques and adopted the idea of macro/micro positioning. A new structure design of a single flexi

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Khitun, Alexander. "Magnetic Interconnects Based on Composite Multiferroics." Micromachines 13, no. 11 (2022): 1991. http://dx.doi.org/10.3390/mi13111991.

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The development of magnetic logic devices dictates a need for a novel type of interconnect for magnetic signal transmission. Fast signal damping is one of the problems which drastically differs from conventional electric technology. Here, we describe a magnetic interconnect based on a composite multiferroic comprising piezoelectric and magnetostrictive materials. Internal signal amplification is the main reason for using multiferroic material, where a portion of energy can be transferred from electric to magnetic domains via stress-mediated coupling. The utilization of composite multiferroics

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Guo, Lei, Lishuai Zhang, Yuan Song, Liang Zhao, and Qiancheng Zhao. "Design and Implementation of a Novel Tilt Sensor Based on the Principle of Variable Reluctance." Sensors 19, no. 23 (2019): 5228. http://dx.doi.org/10.3390/s19235228.

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Tilt angle measurement in dynamic systems is problematic because the rotation of the measured platform is coupled with translation. Therefore, when some sensors are applied in dynamic systems, their output signals are often submerged in the noise signals generated by translation. To enhance the ability of tilt sensors to resist translational noise, a dynamic tilt sensor is proposed based on the principle of variable reluctance from the perspective of sensor structure. The eccentric structure of the sensor constructed with a shell, liquid, and internal damping plate was designed according to th

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Riouch, Tariq, and Cristian Nichita. "Design and control of DFIG with SMES storage under symmetrical grid fault." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 1 (2023): 453. http://dx.doi.org/10.11591/ijpeds.v14.i1.pp453-460.

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<span lang="EN-US">This paper presents a novel design and robust control for wind conversion systems using DFIG. The system is designed to reduce the problems related to the sudden variation of the wind speed and to improve the sensitivity of the DFIG to grid faults to avoid disconnection of the wind system from the electrical grid. To enhance the DFIG behavior, power fluctuation and to protect power devices under symmetrical faults, a specific superconducting magnetic energy storage (SMES) scheme and its control are proposed. To validate this study, the control structure and strategies

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Jordan, Zachary, Shahriar N. Khan, Benjamin A. Jackson, and Evangelos Miliordos. "Can boron form coordination complexes with diffuse electrons? Evidence for linked solvated electron precursors." Electronic Structure 4, no. 1 (2022): 015001. http://dx.doi.org/10.1088/2516-1075/ac495c.

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Abstract Density functional theory and ab initio multi-reference calculations are performed to examine the stability and electronic structure of boron complexes that host diffuse electrons in their periphery. Such complexes (solvated electron precursors or SEPs) have been experimentally identified and studied theoretically for several s- and d-block metals. For the first time, we demonstrate that a p-block metalloid element can form a stable SEP when appropriate ligands are chosen. We show that three ammonia and one methyl ligands can displace two of the three boron valence electrons to a peri

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Sarabi, Behrouz Kheiri, Manu Sharma, Damanjeet Kaur, and Navin Kumar. "A novel technique for generating desired vibrations in structure." Integrated Ferroelectrics 176, no. 1 (2016): 236–50. http://dx.doi.org/10.1080/10584587.2016.1252654.

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Zhang, Jiaxu, Junfeng Liu, and Hongbing Wu. "Research on a Novel High-Torque-Density Axial–Radial-Flux Permanent-Magnet Motor with Annular Winding for an Elevator-Traction Machine." Electronics 12, no. 13 (2023): 2867. http://dx.doi.org/10.3390/electronics12132867.

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The traditional radial flux PMSM and axial flux PMSM have an effective air gap on only one side, between the stator and rotor, and only the effective air gap generates electromagnetic torque. There are defects in the magnetic-field utilization, and it is difficult to improve the torque density. Therefore, this paper proposes an axial–radial-flux permanent-magnet synchronous motor (ARF-PMSM), which combines radial flux with axial flux, to be used in an elevator-traction machine-drive motor. The characteristics of the ARF-PMSM are that the stator core is made of a soft magnetic composite materia

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37

Fowler, P. W., H. M. Kelly, P. Lazzeretti, M. Malagoli, and R. Zanasi. "THEORETICAL DETERMINATION OF THE ELECTRIC DIPOLE AND QUADRUPOLE RESPONSE PROPERTIES OF C60." International Journal of Modern Physics B 06, no. 23n24 (1992): 3903–7. http://dx.doi.org/10.1142/s0217979292001985.

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The electronic structures of the fullerenes, characterized by π-electron systems spread over a closed surface, may exhibit novel responses to external electric and magnetic fields. Accurate theoretical determination of such properties is made difficult by the large number of electrons, but for some systems, in particular C 60, the molecular symmetry can be taken into account to achieve significant reduction in computer effort. A method has been developed that permits the use of the full molecular point group symmetry in the calculation of perturbed electron. density matrices transforming as se

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38

Liu, Zhirong, Min Zhu, Caihua Xu, et al. "Electric field sensing characteristics of ZnO/SiO₂/Si surface acoustic wave devices." Journal of Micromechanics and Microengineering 32, no. 5 (2022): 055001. http://dx.doi.org/10.1088/1361-6439/ac5b1c.

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Abstract Existing microelectro mechanical systems (MEMSs) electric field sensors have movable parts and electronic components. The movable parts are susceptible to external vibration, and the electronic components distort the distribution of the measured electric field. Therefore, we proposed a novel MEMS electric field sensor based on surface acoustic wave (SAW) technology. The SAW electric field sensor is a delay line device with an interdigital transducer and a reflector. The substrate of the device is a ZnO/SiO2/Si multilayer structure. The ZnO piezoelectric layer is not only used as the p

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Yuan, Xiaowei, Zeng Yang, Weijia He, Minglin Yang, and Xinqiing Sheng. "A Novel Hybrid Approach for Computing Electromagnetic Scattering from Objects with Honeycomb Structures." Electronics 12, no. 8 (2023): 1851. http://dx.doi.org/10.3390/electronics12081851.

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We propose in this paper a novel hybrid numerical modeling method for computing electromagnetic scattering from inhomogeneous targets containing honeycomb structures. In the proposed approach, the whole honeycomb structure is divided into the inner and outer two subregions. Each thin wall of a unit cell in the outer subregion is replaced by a zero-thickness surface, with the aid of a resistive sheet boundary condition (RSBC) to describe the electric and magnetic field discontinuities across the surface. Each unit cell in the inner subregion is homogenized by using the Hashin–Shtrikman and the

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Romano, Donato, Akshat Wahi, Marco Miraglia, and Cesare Stefanini. "Development of a Novel Underactuated Robotic Fish with Magnetic Transmission System." Machines 10, no. 9 (2022): 755. http://dx.doi.org/10.3390/machines10090755.

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In this study, a robotic fish inspired to carangiform swimmers is developed. The artifact presents a new transmission system that employs the magnetic field interaction of permanent magnets to ensure waterproofness and prevention from any overload for the structure and the actuating motor. This mechanism converts the rotary motion of the motor into oscillatory motion. This oscillating system, along with the wire-driven mechanism of the tail, generates the required traveling wave in the robotic fish. The complete free swimming robotic fish, measuring 179 mm in length with a mass of only 77 g, w

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Fan, Ting-Ting, Hui-Hui Zhang, Yang-Hua Tang, Fan-Zhong Zhang, and Bing-Nan Han. "Two New Neo-debromoaplysiatoxins—A Pair of Stereoisomers Exhibiting Potent Kv1.5 Ion Channel Inhibition Activities." Marine Drugs 17, no. 12 (2019): 652. http://dx.doi.org/10.3390/md17120652.

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A pair of stereoisomers possessing novel structures with 6/6/5 fused-ring systems, neo-debromoaplysiatoxin E (1) and neo-debromoaplysiatoxin F (2), were isolated from the marine cyanobacterium Lyngbya sp. Their structures were elucidated using various spectroscopic techniques including high resolution electrospray ionization mass spectroscopy (HRESIMS) and nuclear magnetic resonance (NMR). The absolute stereochemistry was determined by calculated electronic circular dichroism (ECD) and gauge-independent atomic orbital (GIAO) NMR shift calculation followed by DP4+ analysis. Significantly, this

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42

Sharif, Abubakar, Yi Yan, Jun Ouyang, et al. "Uniform Magnetic Field Characteristics Based UHF RFID Tag for Internet of Things Applications." Electronics 10, no. 13 (2021): 1603. http://dx.doi.org/10.3390/electronics10131603.

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This paper presents a novel inkjet-printed near-field ultra-high-frequency (UHF) radio frequency identification (RFID) tag/sensor design with uniform magnetic field characteristics. The proposed tag is designed using the theory of characteristics mode (TCM). Moreover, the uniformity of current and magnetic field performance is achieved by further optimizing the design using particle swarm optimization (PSO). Compared to traditional electrically small near-field tags, this tag uses the logarithmic spiral as the radiating structure. The benefit of the logarithmic spiral structure lies in its mag

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43

Lal, Deepak Kumar, and Ajit Kumar Barisal. "Grasshopper Algorithm Optimized Fractional Order Fuzzy PID Frequency Controller for Hybrid Power Systems." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 12, no. 6 (2019): 519–31. http://dx.doi.org/10.2174/2352096511666180717142058.

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Background: Due to the increasing demand for the electrical power and limitations of conventional energy to produce electricity. Methods: Now the Microgrid (MG) system based on alternative energy sources are used to provide electrical energy to fulfill the increasing demand. The power system frequency deviates from its nominal value when the generation differs the load demand. The paper presents, Load Frequency Control (LFC) of a hybrid power structure consisting of a reheat turbine thermal unit, hydropower generation unit and Distributed Generation (DG) resources. Results: The execution of th

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Hu, Jin Lian, and Harishkumar Narayana. "Novel Behavior in Smart Polymeric Materials: Stress Memory and its Potential Applications." Advances in Science and Technology 97 (October 2016): 93–99. http://dx.doi.org/10.4028/www.scientific.net/ast.97.93.

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Materials, structures and systems, responsive to an external stimulus are smart and adaptive to our human demands. Among smart materials, polymers with shape memory effect are at the forefront of research leading to comprehensive publications and wide applications. In this paper, we extend the concept of shape memory polymers to stress memory ones, which have been discovered recently. Like shape memory, stress memory represents a phenomenon where the stress in a polymer can be programmed, stored and retrieved reversibly with an external stimulus such as temperature and magnetic field. Stress m

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Sun, Jinji, Jianyi Ren, and Haoxi Sun. "A Novel Design of an Inner Rotor for Optimizing the Air-Gap Magnetic Field of Hollow-Cup Motors." Machines 10, no. 5 (2022): 314. http://dx.doi.org/10.3390/machines10050314.

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In order to obtain a high power density, spacecraft usually use hollow-cup motors with trapezoidal air-gap magnetic field waveforms. However, due to structural issues, the hollow-cup motor has the problem that the waveform of the air-gap magnetic field is inconsistent with the ideal trapezoidal waveform, which causes torque ripples. In order to reduce torque ripples, the existing method only changes the structure of PMs; the changed PMs are difficult to magnetize and manufacture, which causes the air-gap magnetic field waveform to be unsuitable as the ideal waveform. This paper proposes a nove

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46

Yang, Guangyao, Shengbo Ye, Feng Zhang, Yicai Ji, Xiaojuan Zhang, and Guangyou Fang. "Dual-Polarized Dual-Loop Double-Slot Antipodal Tapered Slot Antenna for Ultra-Wideband Radar Applications." Electronics 10, no. 12 (2021): 1377. http://dx.doi.org/10.3390/electronics10121377.

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The miniaturized high-gain antenna is required in portable, ultra-wideband radar systems. However, the miniaturization, ultra-wideband and high gain often restrict each other in the antenna design. In this paper, a dual-polarized, double-slot, antipodal tapered slot antenna with a double-layer, dual-loop structure and novel slot edges is presented. The proposed magnetic dual-loop structure has the capacity to reduce the low cut-off frequency of the double-slot tapered slot antenna by weakening the resonance and coupling. In addition, the high gain, low sidelobe level (SLL), and low cross-polar

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Yuan, Bin, Qing Du, Chengxiang Hao, Yan Zhao, and Zhongjun Yu. "A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications." Micromachines 14, no. 1 (2022): 52. http://dx.doi.org/10.3390/mi14010052.

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In this paper, a novel wideband transition from a laminated waveguide (LWG) to an air-filled rectangular waveguide (RWG) is proposed for millimeter-wave integration solutions based on multilayer low-temperature co-fired ceramic (LTCC) technology. The integrated transition cavity is divided into several resonators by introducing five grounded via holes. Due to the magnetic wall existing in the symmetry plane, the equivalent circuit of the proposed transition can be simplified as a three-pole filter model to explain the working mechanism with wideband performance. A W-band integrated LWG-to-RWG

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48

Chen, Chao, Tao Lin, Jianteng Niu, et al. "Surface acoustic wave controlled skyrmion-based synapse devices." Nanotechnology 33, no. 11 (2021): 115205. http://dx.doi.org/10.1088/1361-6528/ac3f14.

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Abstract Magnetic skyrmions, which are particle-like spin structures, are promising information carriers for neuromorphic computing devices due to their topological stability and nanoscale size. In this work, we propose controlling magnetic skyrmions by electric-field-excited surface acoustic waves in neuromorphic computing device structures. Our micromagnetic simulations show that the number of created skyrmions, which emulates the synaptic weight parameter, increases monotonically with increases in the amplitude of the surface acoustic waves. Additionally, the efficiency of skyrmion creation

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Corradini, Valentina, Leonardo A. Pajewski, Davide Di Censo, Marcello Alecci, and Angelo Galante. "Characterization of a Novel Packaged Hydrogel Wound Dressing by 2.35 T Magnetic Resonance Imaging." Electronics 12, no. 1 (2022): 188. http://dx.doi.org/10.3390/electronics12010188.

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Hydrogel wound dressing makes easier the treatment of patients suffering from difficult wounds. A new process for the manufacturing of a sterile, packaged hydrogel wound dressing, based on an interpenetrating structure of calcium alginate, agar, and polyvinylpyrrolidone, was recently developed. The new formulation overtakes some previous technologies’ drawbacks expressing a better resistance to mechanical deformations compared to products on the market. In this work, the 2.35 T proton density, spin-lattice relaxation time, spin-spin relaxation time, phase-coherence relaxation, and water appare

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Wang, Huan, Chun-Juan He, Sheng Xu, et al. "Single crystal growth of topological semimetals and magnetic topological materials." Acta Physica Sinica 72, no. 3 (2023): 038101. http://dx.doi.org/10.7498/aps.72.20211961.

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Topological materials have attracted much attention due to their novel physical properties. These materials can not only serve as a platform for studying the fundamental physics, but also demonstrate a significant potential application in electronics, and they are studied usually in two ways. One is to constantly explore new experimental phenomena and physical problems in existing topological materials, and the other is to predict and discover new topological material systems and carry out synthesis. In a word, high-quality crystals are very important for studying quantum oscillations, angle r

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