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Exploring two-dimensional (2D) magnetic heterostructures is essential for future spintronic and optoelectronic devices. Herein, using first-principle calculations, stable ferromagnetic ordering and colorful electronic properties are established by constructing the VS2/C3N van der Waals (vdW) heterostructure. Unlike the semiconductive properties with indirect band gaps in both the VS2 and C3N monolayers, our results indicate that a direct band gap with type-II band alignment and p-doping characters are realized in the spin-up channel of the VS2/C3N heterostructure, and a typical type-III band alignment with a broken-gap in the spin-down channel. Furthermore, the band alignments in the two spin channels can be effectively tuned by applying tensile strain. An interchangement between the type-II and type-III band alignments occurs in the two spin channels, as the tensile strain increases to 4%. The attractive magnetic properties and the unique band alignments could be useful for prospective applications in the next-generation tunneling devices and spintronic devices. [ABSTRACT FROM AUTHOR]

In this research, 96 children with primary nephrotic syndrome (PNS) in our hospital were selected as the research group, and 96 healthy children were randomly selected as the control group to conduct a prospective cohort study. The ultrasound carotid parameters were detected, as well as serum soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) and soluble urokinase plasminogen activator receptor (suPAR) levels, on which comparative analysis was performed. It was found that the carotid intima-media thickness (cIMT), mean wall cross-sectional area (WCSA), serum sTREM-1 and suPAR levels of the study group were higher than those of the control group. And the degree of vascular wall motion (ΔD) was lower than that of the control group (P<0.05), There was a positive correlation between TG, TC, urine NAG, β2-MG, 24 h Upro and cIMT, WCSA, serum sTREM-1, suPAR levels in children with PNS, and a negative correlation between TG, TC, urine NAG, β2-MG, 24 h Upro and ΔD (P<0.05), With the increase of cIMT, WCSA, serum sTREM-1, suPAR levels and the decrease of ΔD, the risk of PNS gradually increased (P<0.05), The area under the curve (AUC) was 0.914, which combined cIMT, AD, WCSA, serum sTREM-1 and suPAR to predict acute kidney injury in children with PNS, Based on these results, it is suggested that the cIMT, WCSA and the expression levels of serum sTREM-l and suPAR in children with PNS are significantly increased, and ΔD is abnormally decreased, which has a significant correlation with the increase of blood lipids and decreased renal function in children. [ABSTRACT FROM AUTHOR]

Magnetic two-dimensional (2D) materials hold considerable promise for the next generation of spintronic devices. In this study, a ternary 2D layered semiconductor compound, MnIn2Se4, with good photoelectric properties and low-temperature ferromagnetism is introduced. Field-effect transistors based on few-layer MnIn2Se4 exhibit n-type characteristics, with a high on-off ratio of up to 450 times, and exhibit a good photoresponse with an on-off ratio of 25 times. Magnetic measurements show that few-layer MnIn2Se4 exhibits ferromagnetic behavior with a perpendicular anisotropy at 2 K and a Curie temperature of ∼7 K. This study suggests that MnIn2Se4 has potential in applications involving magnetic and optoelectronic devices. [ABSTRACT FROM AUTHOR]

Two-dimensional (2D) magnetic crystals have attracted great attention due to their emerging new physical phenomena. They provide ideal platforms to study the fundamental physics of magnetism in low dimensions. In this research, magnetic tunneling junctions (MTJs) based on XSe2 (X=Mn, V) with room-temperature ferromagnetism were studied using first-principles calculations. A large tunneling magnetoresistance (TMR) of 725.07% was obtained in the MTJs based on monolayer MnSe2. Several schemes were proposed to improve the TMR of these devices. Moreover, the results of our non-equilibrium transport calculations showed that the large TMR was maintained in these devices under a finite bias. The transmission spectrum was analyzed according to the orbital components and the electronic structure of the monolayer XSe2 (X=Mn, V). The results in this paper demonstrated that the MTJs based on a 2D ferromagnet with room-temperature ferromagnetism exhibited reliable performance. Therefore, such devices show the possibility for potential applications in spintronics. [ABSTRACT FROM AUTHOR]

Magnetic two-dimensional (2D) materials hold considerable promise for the next generation of spintronic devices. In this study, a ternary 2D layered semiconductor compound, MnIn2Se4, with good photoelectric properties and low-temperature ferromagnetism is introduced. Field-effect transistors based on few-layer MnIn2Se4 exhibit n-type characteristics, with a high on-off ratio of up to 450 times, and exhibit a good photoresponse with an on-off ratio of 25 times. Magnetic measurements show that few-layer MnIn2Se4 exhibits ferromagnetic behavior with a perpendicular anisotropy at 2 K and a Curie temperature of ∼7 K. This study suggests that MnIn2Se4 has potential in applications involving magnetic and optoelectronic devices. [ABSTRACT FROM AUTHOR]

Two-dimensional (2D) materials with excellent photocatalytic properties and unique piezoelectric response have attracted great attention. However, these characters are rare for traditional 2D structures. With an intrinsic electric field, the Janus 2D materials show great promise in photocatalytic and out-of-plane piezoelectric applications. Herein, we show that Janus In 2 X 2 X' (X and X' = S, Se, and Te) monolayers are desirable in the overall water splitting and piezoelectric devices. Comprehensive investigations reveal that the band gaps of these Janus monolayers are from 0.34 to 2.27 eV. With proper band edge positions, strong solar absorption, fast transfer and efficient separation of carriers, and high solar to hydrogen (STH) efficiencies (reaching 37.70%), eight members of them stand out. Besides, the electrons and holes have sufficient driving forces in the process of redox reaction. The piezoelectric response for in- and out-of-plane is superior for all monolayers. These compelling features make them suitable for photocatalysts, sensors, actuators, and energy conversion devices.

Structural symmetry is a simple way to quantify the anisotropic properties of materials toward unique device applications including anisotropic transportation and polarization-sensitive photodetection. The enhancement of anisotropy can be achieved by artificial symmetry-reduction design. A core-shell SbI 3 /Sb 2 O 3 nanowire, a heterostructure bonded by van der Waals forces, is introduced as an example of enhancing the performance of polarization-sensitive photodetectors via symmetry reduction. The structural, vibrational, and optical anisotropies of such core-shell nanostructures are systematically investigated. It is found that the anisotropic absorbance of a core-shell nanowire is obviously higher than that of two single compounds from both theoretical and experimental investigations. Anisotropic photocurrents of the polarization-sensitive photodetectors based on these core-shell SbI 3 /Sb 2 O 3 van der Waals nanowires are measured ranging from ultraviolet (UV) to visible light (360-532 nm). Compared with other van der Waals 1D materials, low anisotropy ratio (I max /I min ) is measured based on SbI 3 but a device based on this core-shell nanowire possesses a relatively high anisotropy ratio of ≈3.14 under 450 nm polarized light. This work shows that the low-symmetrical core-shell van der Waals heterostructure has large potential to be applied in wide range polarization-sensitive photodetectors., (© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Objective: To determine a network solution to meet the network requirements of the heavy data flow, load balance, and potential network storms from expansion of picture archiving and communication system (PACS) application., Methods: Intel Netstructure 480T Giga Switch was used as the main switch and connected to each building by fiber channel at 1 Giga speed to archive 100 MB/s to each port. At the same time, the in-dependence of the original network construction was physically kept. The layer 3 and 4 switchers were used as load balance to reduce the heavy load of the network, and all the cabling for PACS used the super CAT5 along with the Intel NetStructure 1520 to prepare for potential network storms., Results: An advanced intranet was set up to fully meet the high standard requirement of the PACS. The foundation for upgrading the whole network system to 1 Giga application was built to achieve sharing and transmission of images, information, and patient data within the hospital. The base was established for the standardized management of the hospital., Conclusion: Good planning is the first step in setting up PACS, and the equipment forms the necessary platform to run PACS and all kinds of hospital information system (HIS). The networking construction is the foundation of e-hospital.