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- Physics 1
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661
Capacitance enhancement by ion-laminated borophene-like layered materials
Published 2025-01-01“…That is difficult for general materials since the dielectric constant of common materials is below several thousand.…”
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662
A prediction model for guiding tumor microwave ablation surgery based on simulation
Published 2025-01-01“…Methods: An MWA process was first simulated by incorporating electromagnetic radiation equations, thermal equations, and optimized biological tissue parameters (dynamic dielectric and thermophysical parameters). The temperature distributions (the short/long diameters, and the total volume of the ablation zone) were then generated and verified by 60 cases ex vivo porcine liver experiments. …”
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663
Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps
Published 2025-01-01“…These potential-wells work for not only the metallic particles, but also the high refractive-index dielectric particles. By engineering the contribution of the gradient force and scattering force through the particle size, the particle material and the position of the manipulation transverse plane, the force field and trapping potential-well can be tailored to trap/manipulate nanoparticles at different off-axis distance at the subwavelength scale. …”
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664
High-entropy assisted capacitive energy storage in relaxor ferroelectrics by chemical short-range order
Published 2025-01-01“…Abstract Next-generation advanced high/pulsed power capacitors rely heavily on dielectric ceramics with high energy storage performance. …”
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665
Laser-induced spin dynamics in the iron-yttrium garnet film doped with Si ions
Published 2020-03-01“…In this paper, we consider the spin dynamics in a magnetic dielectric: a film of iron - yttrium garnet doped with silicon. …”
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666
Extrapolation of Metal Gate With High-K Spacer in Strained Nanosystem Channel QWB Cylindrical FET for High-Speed Applications
Published 2025-01-01“…The devices incorporate a QWB system incorporating strain engineering in the ultrathin channel region flanked by high-k spacers surrounding the underlaps and metal gate with a stack high-k dielectric. Key electrostatic characteristics, including the Ion/Ioff ratio, leakage current, on-current, sub-threshold swing (SS), drain-induced barrier lowering (DIBL), and transconductance, were extrapolated and analyzed for the CGAA FETs developed in this study. …”
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667
Tunable Filters Using Defected Ground Structures at Millimeter-Wave Frequencies
Published 2024-12-01“…BST film is used as the high-dielectric material for the planar DGS. Lower insertion loss of less than −2 dB below the lower cutoff frequency, and enhanced band-rejection with notch depth of −39.64 dB at 27.75 GHz is achieved by cascading two-unit cells, compared to −12.26 dB rejection with a single-unit cell using BST thin film only. …”
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668
Morphotropic Phase Boundary Region 0.7BiFeO<sub>3</sub>-0.3BaTiO<sub>3</sub> Ceramics Exploration Under the Influence of the Incorporated Sn-Ions for Piezo/Ferro Applications
Published 2025-01-01“…Specifically, the ceramic composition BFBT:0.2Sn has demonstrated excellent remnant polarization (<i>P<sub>r</sub></i> ~ 22.68 µC/cm<sup>2</sup>), an impressive piezoelectric coefficient (<i>d</i><sub>33</sub> ~ 211 pC/N), stable impedance of 1.07 × 10<sup>7</sup> Ω, a Curie temperature of 435 °C and low dielectric loss (tan<i>δ</i>) of <0.5. Moreover, the BFBT:0.2Sn ceramic has also maintained a stable <i>d</i><sub>33</sub> of ~150 pC/N and resistivity of ~10<sup>2</sup> Ω even at a temperature of 400 °C. …”
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669
Controlled Fabrication of Native Ultra‐Thin Amorphous Gallium Oxide From 2D Gallium Sulfide for Emerging Electronic Applications
Published 2025-01-01“…Its oxide, gallium oxide (Ga2O3), combines a large bandgap (4.4–5.3 eV) with a high dielectric constant (≈10). Despite the technological potential of both materials, controlled oxidation of atomically‐thin β‐GaS remains under‐explored. …”
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670
Amplifying the Sensitivity of Electrospun Polyvinylidene Fluoride Piezoelectric Sensors Through Electrical Polarization Process for Low-Frequency Applications
Published 2025-01-01“…However, when reducing the electric field to 1.5 kV/cm and 120 °C, the % F(β) ranged between 87.5% and 90%. The dielectric constant (<i>ɛ</i>′) of polarized PVDF was determined to be 30 at an electric field frequency of 1 Hz, compared to a value of 25 for non-polarized PVDF. …”
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671
Interfacial coupling effects in two-dimensional ordered arrays for microwave attenuation
Published 2025-01-01“…The nano-functional units exhibit distinctive dielectric-sensitive behaviors after self-assembling into two-dimensional ordered arrays. …”
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672
Design of compact and high gain dual-band four-port MIMO antenna array for mm-wave 5G Communications
Published 2025-03-01“…The proposed innovative dual-band quad-port MIMO antenna systems are characterized on a Rogers RT/duroid 5880 (tm) substrate with a dielectric constant 2.2 and a thickness of 0.79 mm, operating at frequencies of 28/38 GHz. …”
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673
Experimental investigation on the reverse mechano-electrical effect of porcine articular cartilage
Published 2025-02-01“…Additionally, the externally applied voltage also caused a slight temperature rise in the vicinity of the cartilage specimens, and the magnitude of the temperature increase was proportional to the externally applied voltage.DiscussionThe fitting results of the experimental data indicated that cartilage thickness influenced the dielectric constant and moment of inertia of the cartilage in the electric field, thereby affecting the magnitude of the electric field force and deflection of the cartilage. …”
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674
Fish-Tail Structured Fractal Monopole Printed Antenna with Dual Broadband Characteristics for Sub–6GHz 5G and X–Band Radar Applications
Published 2025-01-01“…The presented design has been printed on a FR-4 substrate, which has a dielectric constant of 4.4 and a loss tangent of 0.035. …”
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675
High-entropy engineered BaTiO3-based ceramic capacitors with greatly enhanced high-temperature energy storage performance
Published 2025-01-01“…This study provides a good paradigm of the efficacy of the high-entropy engineering for developing high-performance dielectric capacitors.…”
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676
A Dual-Port Dual-Wideband Dual-Sense Circularly Polarized DRA With a Novel Feeding Mechanism
Published 2025-01-01“…A dual-wideband dual-sense circularly polarized (CP) dielectric resonator antenna (DRA) based on a novel feeding technique is investigated and demonstrated. …”
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677
Comparative analysis of bulk ceramics and thick film coatings for optimized energy storage technologies
Published 2024-12-01“…Scanning electron microscopy (SEM) provided the surface morphologies of BNT-SrF5 powder. The dielectric constant of film sample revealed more thermal stable response compared to the bulk ceramics. …”
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678
Low SAR compact wideband/dual-band semicircular slot antenna structures for sub-6 GHz 5G wireless applications
Published 2025-01-01“…In the simulations, the antenna performed adequately when both the dielectric back cover and the human head-hand model are present. …”
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679
Nanoscale monitoring of the initial stage of water condensation on a printed circuit board
Published 2025-01-01“…When moisture accumulates on conductor-dielectric-conductor systems under bias voltage, electrochemical processes can be triggered, leading to the growth of metallic dendrites that may ultimately result in system failure. …”
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680
Rebar Recognition Using Multi-Hyperbolic Attention in Faster R-CNN
Published 2025-01-01“…Due to the rebar’s high dielectric constant approaching infinity, radar signal reflections are intensified, manifesting as distinct hyperbolic patterns within radar imagery. …”
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