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Polarization-sensitive photodetection using 2D/3D perovskite heterostructure crystal

 E-Mail IMAGE: (a) Schematic structure of polarized light detector. (b) Photoconductivity parallel and perpendicular to the interface. (c) Photoconductivity anisotropy versus excitation power. (d) Angle-resolved photocurrent as a function of polarization angle. view more  Credit: @Science China Press Polarization-sensitive photodetectors, based on anisotropic semiconductors, have exhibited wide advantages in specialized applications, such as astronomy, remote sensing, and polarization-division multiplexing. For the active layer of polarization-sensitive photodetectors, recent researches focus on two-dimensional (2D) organic-inorganic hybrid perovskites, where inorganic slabs and organic spacers are alternatively arranged in parallel layered structures. Compared with inorganic 2D materials, importantly, the solution accessibility of hybrid perovskites makes it possible to obtain their large crystals at low cost, offering exciting opportunities to incorporate crystal out-

Pooled CRISPR screening identifies m6A as a positive regulator of macrophage activation

Cd86), were down-regulated in Mettl3-deficient cells (Fig. 1G), suggesting that METTL3 has a critical function in controlling the innate immune response of Raw 264.7 macrophages. To further confirm the biological role of the m 6A modification in macrophages, Mettl3 conditional KO (CKO) mice were generated by crossing Mettl3 flox/flox mice with mice expressing Cre recombinase under the control of lysozyme 2 promoter ( Lyzm-Cre). We have documented the loss of both the METTL3 protein and the overall m 6A modification in bone marrow–derived macrophages (BMDMs) from Mettl3 flox/flox; Lyzm-Cre mice (fig. S1I). No differences in the frequency of major immune cell populations were observed between

Dalian coherent light source reveals oxygen production from three-body photodissociation of water

 E-Mail IMAGE: Dalian Coherent Light Source revealing three-body photodissociation of water as an important prebiotic-O2 source view more  Credit: DICP The provenance of oxygen on Earth and other solar planetary bodies is a fundamental issue. It is widely accepted that the prebiotic pathway of oxygen production in the Earth primitive atmosphere was via vacuum ultraviolet (VUV) photodissociation of CO 2 and subsequent recombination of two O atoms. In contrast, the photodissociation of H2O, one of the dominant oxygen carriers, has long been assumed to proceed mainly to produce hydroxyl (OH)- and hydrogen (H)-atom primary products, and its contribution to oxygen production is limited.

Observations indicate strengthening of tropical Pacific western boundary currents for six decades

 E-Mail IMAGE: Geostrophic currents retrieved from multi-decadal hydrological observational data based on WOA18 ((a), (b), (d), (e), cm s?1) and the mean horizontal absolute velocity |u| in the upper 200 m simulated. view more  Credit: ©Science China Press Under the background of global warming, the energy budget of the earth is out of balance with more than 90% of additional heat entering the ocean. The tropical Pacific Ocean has an important influence on the global tropical climate and the climate of China, and the tropical Pacific Western Boundary Currents (WBCs) that flow through it plays an important role in the climate system. Large-scale ocean circulation redistributes ocean heat and mass and is hence one of the basic dynamic processes that shape the earth s Marine environment. The tropical Pacific WBCs system is a key part of the global ocean circulation system. Accurate assessment of the variation of the tropical Pacific WBCs is of much significance for bett

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