Category: 4. Physics

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  • Orbital-free density functionals based on real and reciprocal space separation

    Orbital-free density functionals based on real and reciprocal space separation

    Formalism

    The KEDFs can typically be decomposed into local and non-local components in r-space, such that:

    $$\begin{array}{lll}{T}_{s}[n]&=&{T}_{{\rm{TF}}\lambda {\rm{W}}}[n,\nabla n]+{T}_{{\rm{NL}}}[n]\\ &=&{T}_{{\rm{TF}}}[n]+\lambda \cdot…

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  • Investigating the effects of microwave plasma on bacterial cell structures, viability, and membrane integrity

    Investigating the effects of microwave plasma on bacterial cell structures, viability, and membrane integrity

    Non-thermal microwave plasma optical characterization

    Figure 2 illustrates the optical emission spectrum spanning the wavelength range of 300–1000 nm, characterizing air (0.8%) and ozone (99.2%) plasma generated via a microwave source,…

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  • Far-ultraviolet light causes direct DNA damage in human lung cells and tissues

    Far-ultraviolet light causes direct DNA damage in human lung cells and tissues

    All chemicals, cell lines, media, antibodies, fluorescence probes, commercial assays, and tools used in this study are listed in Table S1 (Supplementary Information).

    Experimental sources of Far-UVC irradiation

    In this study, we used two Far-UVC…

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  • Optical properties and dynamics of direct and spatially and momentum indirect excitons in AlGaAs/AlAs quantum wells

    Optical properties and dynamics of direct and spatially and momentum indirect excitons in AlGaAs/AlAs quantum wells

    Steady-state photoluminescence spectroscopy

    The structure under study is schematically depicted in Fig. 1a. The active region consists of twelve 9 nm-wide Al0.20Ga0.80As QWs, separated by 4 nm AlAs barriers, distributed in three stacks of four….

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  • Control and readout of a 13-level trapped ion qudit

    Control and readout of a 13-level trapped ion qudit

    137Ba+ energy levels simulations

    To calculate the energy eigenvalues and eigenstates for an arbitrary magnetic field strength, the Hamiltonian for the corresponding energy orbital is constructed in the \(\vert…

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  • From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers

    From ferromagnetic semiconductor to antiferromagnetic metal in epitaxial CrxTey monolayers

    Epitaxial growth of phase-selective CrxTey

    Figure 1 shows the growth of ML CrxTey epitaxial layers via MBE, with control over the stoichiometry obtained by tuning the growth conditions used. We show in Fig. 1c, d, f, g…

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  • Controlled quantum authentication confidential communication protocol for smart healthcare

    Controlled quantum authentication confidential communication protocol for smart healthcare

  • Sai, S., Hassija, V., Chamola, V. & Guizani, M. Federated learning and NFT-based privacy-preserving medical-data-sharing scheme for intelligent diagnosis in smart healthcare. IEEE Internet Things J. 11, 5568–5577.

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  • Quantum eyes on energy loss: Diamond quantum imaging for next-gen power electronics

    Quantum eyes on energy loss: Diamond quantum imaging for next-gen power electronics

    Diamond quantum sensors can be used to analyze the magnetization response of soft magnetic materials used in power electronics; report scientists based on collaborative research. Using a novel imaging technique, they developed quantum protocols…

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  • Efficiency upgrade for OLED screens: A route to blue PHOLED longevity

    Efficiency upgrade for OLED screens: A route to blue PHOLED longevity

    Blue phosphorescent OLEDs can now last as long as the green phosphorescent OLEDs already in devices, University of Michigan researchers have demonstrated, paving the way for further improving the energy efficiency of OLED screens.

    “This moves the…

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