After conducting the simulation, the curves depicting the absorption rate, reflection coefficient\({S_{11}}\), and transmission coefficient \({S_{21}}\) as functions of frequency are presented in Fig. 2 (a). It is evident that the transmission…
Category: 4. Physics
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Band gap and dispersion characteristics of phononic crystal microchannels under fluid solid coupling
Finite element modeling and algorithm validation
Based on the bandgap characteristics studied above, we need to go further to investigate the effect of the bandgap on the vibration law under different excitation conditions. Without considering the…
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Implementation of carrier-grade quantum communication networks over 10000 km
Network topology
CN-QCN consists of several backbone networks and metropolitan networks. Spanning across China’s principal urban centers, the backbone network operates in coordination with BSBN to implement a distinctive “two-horizontal,…
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High-gravitational effect on process stabilization evaluation for material extrusion using polylactic acid filament
The impact of high-gravity conditions on the AM processes can translate into improved print quality, resulting in 3D printed objects with fewer defects, improved structural integrity, and superior mechanical properties. Figure 1 presents the…
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Study on acoustic emission evolution features of gas-bearing coal under different gas pressures
Analysis of the laboratory experimental results of uniaxial compression AE of coal samples under different gas pressure gradients
It can be seen that under five different gas pressure conditions of 0, 0.5, 1, 1.5, and 2 MPa, the AE peak…
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A transportable laser-plasma accelerator in the MeV range
The acceleration of relativistic electron beams by lasers has attracted broad scientific interest in the past decades1,2,3. Among different approaches, Laser-Plasmas Accelerators (LPAs)4 stand out for their ability to produce electron beams with…
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Network dynamics reveal drought synchronization hubs in the Po River Basin
This study employs both undirected and directed complex networks to analyze drought synchronization in the Po River Basin. Networks are constructed based on statistical relationships in the 12-month Standardized Precipitation Index (SPI-12)…
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Light in, sound keys out: photoacoustic PUFs from stochastic nanocomposites
The use of the PA effect as the operating principle for a PUF marks a conceptual shift from conventional optical approaches. As shown in Fig. 1, this architecture employs nanosecond-pulsed laser excitation to induce localized thermal expansion…
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Uncertainty management in multiobjective electric vehicle integrated optimal power flow based hydrothermal scheduling of renewable power system for environmental sustainability
This part presents the cost computations that go along with the modeling and estimation of power generation by the different power sources (wind, solar, EV, and hydro) that are employed in this study.
Modeling of WP
Variation of Wind velocity is…
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Quantum computation for robot posture optimization
Qubit operation and Bloch sphere representation
A quantum bit, or qubit, is the fundamental unit of information in quantum computing. Unlike a classical bit, which can represent only one of two discrete values (0 or 1), the state of a qubit can…
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