Results 51 to 60 of about 3,423,847 (360)
Elinvar Materials: Recent Progress and Challenges
Advanced Engineering Materials, EarlyView.Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
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Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
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Probing electromagnetic wave energy with an in-series assembly of thermoelectric devices
AIP Advances, 2022 We study the interaction of radio waves, microwaves, and infrared laser light of power P and period τ with a macroscopic thermoelectric (TEC) device-based detector and probe the energy Pτ as being the energy of these electromagnetic (EM) waves.
R. Joseph Rybarczyk +4 more
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Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures
Advanced Engineering Materials, EarlyView.This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
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Effect of Density Irregularities on Radio Frequency Wave Propagation in Ionospheric Plasmas [PDF]
EPJ Web of ConferencesDensity irregularities play a vital role in determining how radio frequency (RF) waves travel through plasmas. In the Earth’s ionosphere, these density irregularities also impact radio communication.
Kim Eun-Hwa +5 more
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On the Escape of Low-frequency Waves from Magnetospheres of Neutron Stars
The Astrophysical Journal, 2023 We study the nonlinear decay of the fast magnetosonic (fms) into the Alfvén waves in relativistic force-free magnetohydrodynamics. The work has been motivated by models of pulsar radio emission and fast radio bursts (FRBs), in which the emission is ...
Ephim Golbraikh, Yuri Lyubarsky
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Proceedings of the Japan Academy. Series B, Physical and biological sciences, 2014 The wind velocity and temperature profiles observed in the middle atmosphere (altitude: 10–100 km) show perturbations resulting from superposition of various atmospheric waves, including atmospheric gravity waves.
T. Tsuda
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Waves, modes, communications, and optics: a tutorial [PDF]
Advances in Optics and Photonics, 2019 Modes generally provide an economical description of waves, reducing complicated wave functions to finite numbers of mode amplitudes, as in propagating fiber modes and ideal laser beams.
D. Miller
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
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Compact radio emission indicates a structured jet was produced by a binary neutron star merger [PDF]
Science, 2018 Merging produced a structured jet The binary neutron star merger event GW170817 was observed with gravitational waves and across the electromagnetic spectrum.
G. Ghirlanda +38 more
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