The in-situ growth of epitaxial GaN with a short-range ordered (SRO) BN interlayer is proposed to demonstrate a high manufacturing scalability of the epitaxial lateral overgrowth (ELOG) process. During the GaN growth, the mask formation of the SRO BN occurred in the on-site chamber within a few minutes. The BN interlayer efficiently reduced microstructural defects, such as screw-type and edge-type threading dislocations, to achieve high structural and optical characteristics of the GaN overlayer, whose results are comparable to those of the previously reported ex-situ ELOG approaches. These improvements were also demonstrated in the device performances of the GaN light-emitting diodes.

The schematic illustrates the heat generation mechanisms of magnetic nanoparticles (MNPs) under an alternating magnetic field (AMF). Upon exposure to AMF, the magnetization vector (M) of the MNPs undergoes relaxation processes that result in heat dissipation. At low thermal stability (low σ = K_effV/k_BT), Néel relaxation dominates, where spin-orbit coupling induces lattice vibrations. At high thermal stability (high σ), Brownian relaxation occurs as the physical rotation of the MNPs generates frictional heat in the surrounding medium. These combined effects of Néel and Brownian relaxation contribute to efficient heat dissipation, which is critical for advanced applications such as multiplexed neural stimulation.

This work presents three acidic types of proton conductors (covalently bonded PA, ion-pair bonded PA, and free PA) within phosphonated zwitterionic aromatic polymer structure. Covalently bonded PA groups and ion-pair bonded PA function as fixed proton sources, anhydride inhibitors, and free radical scavengers, effectively mitigating the dependence of proton conductivity on free PA. Furthermore, the incorporation of ion pair coordination significantly reduces the proton conductors leaching during operation. The synergistic interactions among these three proton-conducting structures lead to exceptional chemical stability and superior electrochemical performance of HT-PEMs.

Na₃V₂(PO₄)₃/C (NVP/C) demonstrates outstanding low-temperature lithium-ion battery performance, retaining up to 86% capacity at −20 °C due to its fast ionic conductive structure, reduced particle size, and robust cycling stability. Exceptional resilience and rate capability highlight its potential for extreme environments.

Controlling stoichiometry and electronic reconstruction at the interface of transition metal oxide heterostructures offers a new way to tune their unique properties, leading to behaviors distinct from the bulk components. Using atomically resolved scanning transmission electron microscopy, element specific x-ray resonant magnetic reflectivity and x-ray magnetic circular dichroism, we have demonstrated that the presence of local oxygen deficiency across the interface and charge transfer to the empty conduction band of SrTiO₃ at the interface are the primary drivers for the modified interfacial magnetism in the manganite thin films and Ti³⁺ induced ferromagnetism at the La_0.7Sr_0.3MnO₃/SrTiO₃ interface.

In this work, we propose the preparation of foamed TPU fibers and foamed fabrics (FT-fabric) with anisotropic cell structure using TPU as substrate by micro-extrusion foaming techniques. Thanks to the multistage cell distribution of FT-fabric and the vibrational absorption of the polymer in the MIR band, the prepared FT-fabric has a near-infrared reflectance of more than 97%, which enables effective radiative cooling. The porous structure of the FT-fabric endows it with an ultra-low density, which is able to provide additional buoyancy in water.

The authors investigate the high-pressure phase boundaries of Pd-intercalated 2H-TaSe₂ crystals at low temperatures. By systematically tuning the charge density wave (CDW) transition temperatures using hydrostatic pressure, they identify a quantum critical point near 21.5 GPa. At this critical pressure, both the superconducting transition temperature and the upper critical field reach their maximum values. Moreover, an effective electron mass in the Fermi liquids states is most enhanced at the quantum critical point, while Raman scattering confirms disappearance of periodic lattice distortions linked to the CDW. These findings highlight the crucial role of CDW quantum fluctuations in optimizing superconductivity.

There is an urgent need to enhance silica glass transparency for optical fibers. This study achieves this by hot compression above the melting point. Measurements of density, refractive index, Rayleigh scattering, and ring structures reveal two pressure-dependent trends. High-energy X-ray scattering links these to structural changes at ~4 Å (short-range) and ~8 Å (intermediate-range). Notably, optimal enhancement occurs at pressures as low as 0.8 GPa, far below the 4 GPa predicted by molecular dynamics simulations, making the process practical for high-transparency silica glass fiber production.

This study clarified a large dielectric constant of MgO tunnel barriers in epitaxial magnetic tunnel junction (MTJ). The MgO tunnel barrier is subjected to compressive strain because of restraint from the underlying layers. We demonstrated that the dielectric constant of the MgO tunnel barrier and voltage controlled magnetic anisotropy (VCMA) coefficient of the epitaxial MTJ enhanced with increasing the compressive strain. Such strain engineering in epitaxial stacks makes simple rocksalt tunnel barriers more attractive for spintronics applications.