Wine and vine shoots
White wine with an ethanol content of 11% (v/v) was purchased in a local retail store. It was obtained from the Malvasia Bianca variety grown in Laterza (Puglia, Italy). The wine had the following chemical characteristics: pH…
Category: 4. Physics
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High-fidelity database of supercritical homogeneous isotropic turbulence in the pseudo-boiling region
Oefelein, J. C. & Yang, V. Modeling high-pressure mixing and combustion processes in liquid rocket engines. Journal of Propulsion and Power 14, 843–857, https://doi.org/10.2514/2.5349 (1998).
Google…
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AI-assisted hyper-dimensional broadband quantum memory with efficiency above 90% in warm atoms
Experimental setup
To efficiently memorize hyper-dimensional information, it is necessary to be capable of coherently storing and retrieving OAM spatial modes and SAM polarization modes in the signal with an efficiency of above 90% and a fidelity…
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Optimized SPR-PCF sensor for sucrose detection inspired by vertical pupil geometry
The sensor presented in this study is inspired by the vertical pupil structure that exists in some animals such as cats and crocodiles. This type of pupil shows the evolutionary adaptation according to the lifestyle and habitat of animals. This…
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All-day free-space quantum key distribution with thermal source towards quantum secure communications for unmanned vehicles
The protocol and its security
In PSP CVQKD, the secure key is generated by utilizing the intrinsic field fluctuations of a thermal source. In this protocol, as shown in Fig. 1, Alice splits the output signal of a thermal source into two spatial…
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Ultra-wideband optically transparent flexible metamaterial absorber for satellite stealth
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…
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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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