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- Physics 1
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381
Modelling of Electromagnetic Scattering by a Hypersonic Cone-Like Body in Near Space
Published 2017-01-01“…They are used to calculate the complex relative dielectric constants of the plasma sheath. Then the volume-surface integral equation method is adopted to analyze the scattering properties of the body plus the plasma sheath. …”
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382
Model of Electromagnetic Emitter Based on a Stream of Single Electrons inside Curved Carbon Nanotube
Published 2018-12-01“…The aim of the work is to find the possibility of application of injection and (quasi)ballistic drift of single electrons inside curved carbon nanotubes for emission of electromagnetic waves in the microwave range and to determine the parameters of the radiating system that affect the radiation power.By the calculation within the framework of classical electrodynamics it is shown the possibility in principle of generation of electromagnetic radiation of the gigahertz range by a stream of single electrons inside a hollow curved dielectric carbon nanotube.It was found that the spectrum and power of this radiation can be controlled by varying the electron flux density, length and curvature of the hollow nanotube.The results of the work can be applied for elaboration of a microminiature emitter of microwave electromagnetic radiation based on a curved carbon nanotube in the engineering of contactless probe microscopy.…”
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383
Development of a Compact Wide-Slot Antenna for Early Stage Breast Cancer Detection Featuring Circular Array Full-View Geometry
Published 2014-01-01“…Imaging result using inhomogeneous breast phantom indicates that the proposed antenna is capable of detecting a 5 mm size cancerous tumor embedded inside the fibroglandular region with dielectric contrast between the target and the surrounding materials ranging from 1.7 : 1 to 3.6 : 1.…”
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384
A Virtual Fabrication and High-Performance Design of 65 nm Nanocrystal Floating-Gate Transistor
Published 2024-01-01“…In order to obtain the high-performance design, this work proposed a set of structure parameters for the device such as the tunnel oxide layer thickness, Interpoly Dielectric (IPD), dot dimension, and dot spacing. Besides, this work was successful in the virtual fabrication process and methodology to fabricate and characterize the 65 nm nanocrystal floating-gate transistor. …”
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385
Design and Development of a New Electrically Small 3D UHF Spherical Antenna with 360° of Opening Angle in the Whole Space for RFID, WSN, and RSN Applications
Published 2016-01-01“…These antennas are based on different shapes and are wrapped on the Styrofoam sphere surface of dielectric constant close to air (ɛr=1.06). A T-match configuration is used to adapt the input impedance of antennas to a value of 50 Ω. …”
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386
Artificial Intelligence‐Enhanced Metamaterial Bragg Multilayers for Radiative Cooling
Published 2025-02-01“…This investigation provides with optimal designs of beyond‐Bragg, all‐dielectric, ultra‐broadband mirrors that provide net cooling powers in the order of ≈100 W m−2, similar to the best‐performing structures in literature. …”
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387
Electromagnetic Characterization of a Composite (RE-CB-MT) by Time Domain Spectroscopy
Published 2017-01-01“…The aim of this article is to study the dielectric behavior (ε, σ) in microwaves domain of composites made with Epoxy Resin (RE), Carbon Black (CB), and Magnesium Titanate (MT) on a large band of frequency. …”
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388
A Design of CP-MIMO System with Elements of a Diamond-Ring Slot for 5G Mobile-Phone
Published 2021-06-01“…A cheap FR-4 substrate with using a size of 75 x 150 mm2 as the design dielectric mater. 50-Ohm microstrip-lines T-shaped feeds the antenna ports. …”
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389
A Printed LPDA Antenna Fed by a Microstrip Line to Double Sided Parallel Strip Line from Backside
Published 2017-01-01“…The four layers of the printed LPDA antenna are printed on three thin dielectric substrates which are integrated together. …”
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390
Implementation of an Innovative Method to Design Reflectarray Antennas
Published 2012-01-01“…The developed approach automatically generates the geometrical model of reflectarray antennas taking into account some input parameters, such as, the unit cell type and dimensions, frequency, focal length, periodicity, dielectric materials, and desired main beam radiating direction. …”
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391
Multi-response optimization of EDM drilling parameters of the Nitinol SMA
Published 2021-08-01“…Current (I), voltage (V), charging-time (TON), discharging-time (TOFF), and dielectric pressure (DP) were taken as input control parameters. …”
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392
Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF-RFID Reader Antenna with Fractal Geometry for Enhancing Parameters
Published 2021-01-01“…The designed antenna is fabricated, and the prototype is characterized in terms of dielectric constant and loss tangent. The obtained results indicate high correlation with simulation results.…”
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393
Maximizing Optical Chirality Through Tailored Excitation Fields: A T-Matrix Approach
Published 2025-01-01“…In this study, we propose a method to design the incident field based on the <i>T</i>-matrix of dielectric chiral Mie spheres, aiming to maximize scattering circular dichroism. …”
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394
Highly sensitive and efficient 1550 nm photodetector for room temperature operation
Published 2025-01-01“…We use specifically stacked bilayer hexagonal BAs, with material properties calculated from first principles, on a co-optimized dielectric photonic crystal substrate to simultaneously decrease the dark current by three orders of magnitude at RT and maintain an EQE of >99%. …”
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395
Laboratory Evaluation of Time-Domain Reflectometry for Bridge Scour Measurement: Comparison with the Ultrasonic Method
Published 2010-01-01“…A framework based on dielectric mixing model has been developed, which can be easily incorporated into an automatic analysis algorithm. …”
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396
Atomic-scale intercalation and defect engineering for enhanced magnetism and optoelectronic properties in atomically thin GeS
Published 2025-02-01“…Using large-scale, first-principles many-body simulations that account for randomly distributed sulfur vacancies and the dielectric screening within the hybrid material, we show the tunability of the optoelectronic features. …”
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397
Assessing the Capabilities of a New Linear Inversion Method for Quantitative Microwave Imaging
Published 2015-01-01“…To this end, we carry out a parametric numerical analysis for a canonical scatterer (a homogeneous dielectric cylinder with circular cross section) and derive a quantitative criterion to foresee the method’s applicability. …”
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398
Monolithic electrostatic actuators with independent stiffness modulation
Published 2025-01-01“…Here we replicate this function in the electro-stiffened ribbon actuator, a monolithic strong actuator capable of high contraction and stiffness modulation. electro-stiffened ribbon actuator employs dielectric-liquid-amplified electrostatic forces for contraction, and electrorheological fluid for rapid (<10 ms) stiffness and damping adjustments. …”
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399
Metasurface-Enabled Microphotonic Biosensors via BIC Modes
Published 2025-01-01“…BIC-enabled metasurfaces, utilizing dielectric, plasmonic, and hybrid structures, achieve ultra-high Q-factors and amplify target molecule interactions on functionalized sensor surfaces. …”
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400
Frequency-Tunable Electromagnetic Absorber by Mechanically Controlling Substrate Thickness
Published 2018-01-01“…Therefore, the effective dielectric constant of the overall substrate can be changed. …”
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