Topotactic Reduction-Induced Stabilization of β-LaMoO Phase: Structure, Static Oxygen Disorder, and Electrical Properties.

LaMoO is acknowledged as an exceptional oxide ion conductor. It undergoes a reversible phase transition around 580 °C from the nonconductive low-temperature monoclinic α-LaMoO phase to the highly conductive high-temperature cubic β-LaMoO phase. In addition, LaMoO demonstrates complex chemistry under reducing conditions.

DFT-based B solid-state NMR calculations for guiding fine local structure identification and phase-property modulation in ZnYBO borate oxide ion conductors.

Solid-state nuclear magnetic resonance (NMR) spectroscopy serves as a powerful technique for probing local structures. However, the interpretation of NMR signals mainly based on empirical knowledge could lead to imprecise local structural determinations. To address this, density functional theory (DFT)-based theoretical NMR calculations, aided by experimental three-dimensional continuous rotation electronic diffraction (3D cRED) technique, were performed for ZnYBO borate oxide ion conductors.

Revolutionizing the capture efficiency of ultrasensitive digital ELISA an antibody oriented-immobilization strategy.

Bead-based digital ELISA, the most sensitive protein quantification method, has drawn much attention to exploring ultra-low abundance biomarkers in the life sciences and clinical applications. However, its major challenge refers to the low antigen capture efficiency in the immunoreaction process due to the low probability of collision between the deficient concentration of the analytes and the captured antibody-immobilized on the beads. Here, we achieved significantly improved reaction efficiency in the digital signal formation by fixing the orientation of antibodies and revealed the kinetic mechanism for the first time.

Safety and efficacy of allogenic human amniotic epithelial cells transplantation via ovarian artery in patients with premature ovarian failure: a single-arm, phase 1 clinical trial.

Background: Premature ovarian failure (POF) is a prevalent and severe condition that impairs female health but there is currently no effective treatment available to restore ovarian function. Human amniotic epithelial cells (hAECs) exhibit ovarian protection in pre-clinical models. Thus, we conducted a single-arm, phase 1 clinical trial to assess the safety and efficacy of allogenic hAECs in treating POF.

Correlating local structure and migration dynamics in Na/Li dual ion conductor NaYSiO.

NaYSiO (NYSO) is demonstrated as a promising electrolyte with high ionic conductivity and low activation energy for practical use in solid Na-ion batteries. Solid-state NMR was employed to identify the six types of coordination of Na ions and migration pathway, which is vital to master working mechanism and enhance performance. The assignment of each sodium site is clearly determined from high-quality Na NMR spectra by the aid of Density Functional Theory calculation.

Intrinsic-strain-induced ferroelectric order and ultrafine nanodomains in SrTiO.

Nano ferroelectrics holds the potential application promise in information storage, electro-mechanical transformation, and novel catalysts but encounters a huge challenge of size limitation and manufacture complexity on the creation of long-range ferroelectric ordering. Herein, as an incipient ferroelectric, nanosized SrTiO was indued with polarized ordering at room temperature from the nonpolar cubic structure, driven by the intrinsic three-dimensional (3D) tensile strain. The ferroelectric behavior can be confirmed by piezoelectric force microscopy and the ferroelectric TO1 soft mode was verified with the temperature stability to 500 K.

High-pressure synthesis of A-site ordered perovskite PbMn(CrMn)O with long-range antiferromagnetic ordering and a spin glass transition.

An AA'BO-type perovskite oxide PbMn(CrMn)O was synthesized by high-pressure solid-state reactions at 8 GPa and 1373 K. Synchrotron X-ray diffraction shows a cubic crystal structure with the space group 3̄. The charge states are verified by X-ray photoelectron spectroscopy to be PbMn(CrMnMn)O, where the Pb and Mn are 1 : 3 ordered respectively at A and A' sites, while the Cr, Mn and Mn are disorderly distributed at the B site.

Hexagonal Halide Perovskite CsLiInCl: Cation Ordering, Face-Shared Octahedral Trimers and Mn Luminescence.

The In-based double perovskite halides have been widely studied for promising optical-electric applications. The halide hexagonal perovskite CsLiInCl was isolated using solid-state reactions and investigated using X-ray diffraction and solid-state NMR spectra. The material adopts a 12-layered hexagonal structure (12R) consisting of layered cationic orders driven by the cationic charge difference and has Li cations in the terminal site and In in the central site of face-shared octahedron trimers.

Machine Learning Prediction of Quantum Yields and Wavelengths of Aggregation-Induced Emission Molecules.

The aggregation-induced emission (AIE) effect exhibits a significant influence on the development of luminescent materials and has made remarkable progress over the past decades. The advancement of high-performance AIE materials requires fast and accurate predictions of their photophysical properties, which is impeded by the inherent limitations of quantum chemical calculations. In this work, we present an accurate machine learning approach for the fast predictions of quantum yields and wavelengths to screen out AIE molecules.

Clinical characteristics and outcomes of COVID-19-associated encephalopathy in children.

Apart from the typical respiratory symptoms, coronavirus disease 2019 (COVID-19) also affects the central nervous system, leading to central disorders such as encephalopathy and encephalitis. However, knowledge of pediatric COVID-19-associated encephalopathy is limited, particularly regarding specific subtypes of encephalopathy. This study aimed to assess the features of COVID-19-associated encephalopathy/encephalitis in children.

The glass phase in the grain boundary of NaZrSiPO, created by gallium modulation.

NaZrSiPO has been proven to be a promising electrolyte for solid-state sodium batteries. However, its poor conductivity prevents application, caused by the large ionic resistance created by the grain boundary. Herein, we propose an additional glass phase (Na-Ga-Si-P-O phase) to connect the grain boundary Ga ion introduction, resulting in enhanced sodium-ion conduction and electrochemical performance.

An isotropic zero thermal expansion alloy with super-high toughness.

Zero thermal expansion (ZTE) alloys with high mechanical response are crucial for their practical usage. Yet, unifying the ZTE behavior and mechanical response in one material is a grand obstacle, especially in multicomponent ZTE alloys. Herein, we report a near isotropic zero thermal expansion (α = 1.

Au/TiC/g-CN Ternary Composites Boost H Evolution Efficiently with Remarkable Long-Term Stability by Synergistic Strategies.

The use of novel two-dimensional MXene materials and conventional g-CN photocatalysts to fabricate the composites for hydrogen evolution reaction (HER) has attracted much attention, for which there is plenty of room for the enhancement of hydrogen evolution rates particularly under visible light and photostability. Herein, g-CN was modified by copolymerization of malonamide and melamine and used to fabricate the ternary composites of Au particles and TiC MXene, and based on the synergistic effect, the composites enhanced the hydrogen evolution rates by 2.1, 99.

Tolerance Factor and Phase Stability of the KCoO-Type AMN Nitrides.

In order to help understand the structural stability of KCoO-type ternary nitrides AMN, referring to perovskite structure, a tolerance factor is proposed to describe the size effect on the phase/symmetry options of the experimentally accessible AMN nitrides. This leads to a range of values above 0.946 for structurally stable KCoO-type AMN nitrides with values around 0.

Clinical characteristics and genetic analysis of pediatric patients with sodium channel gene mutation-related childhood epilepsy: a review of 94 patients.

Objective: This study aimed to examine the clinical and gene-mutation characteristics of pediatric patients with sodium channel gene mutation-related childhood epilepsy and to provide a basis for precision treatment and genetic counseling.

Methods: The clinical data from 94 patients with sodium channel gene mutation-related childhood epilepsy who were treated at Hunan Children's Hospital from August 2012 to December 2022 were retrospectively evaluated, and the clinical characteristics, gene variants, treatment, and follow-up status were analyzed and summarized.

Results: Our 94 pediatric patients with sodium channel gene variant-related childhood epilepsy comprised 37 girls and 57 boys.

Thermally Induced Oxygen Vacancies and High Oxide Ion Conduction in KZnVO with a Melilite-Related Structure.

Donor-doped melilite materials with interstitial oxygen defects in the structure are good oxide ion conductors with negligible electronic conduction and show great potential in the ceramic electrolyte of intermediate-temperature solid oxide fuel cells (IT-SOFC). However, the parent melilite-structured materials with stoichiometric oxygen are usually insulators. Herein, we reported high and pure oxide ion conduction in the parent KZnVO material with a melilite-related structure, e.

Circularly Polarized Light-Dependent Pyro-Phototronic Effect from 2D Chiral-Polar Double Perovskites.

Chiral hybrid perovskites combine the advantages of chiral materials and halide perovskites, offering an ideal platform for the design of circularly polarized light (CPL) detectors. The pyro-phototronic effect, as a special mechanism of the photoexcited pyroelectric signal, can significantly improve the performance of photodetectors, whereas it remains a great challenge to achieve pyroelectricity-based CPL detection. In this work, the chiroptical phenomena and the pyro-phototronic effect are combined in chiral-polar perovskites to achieve unprecedented pyroelectric-based CPL detection.

KCoO-type layered nitrides CaEuTiN: structural stability, electrical properties and Eu coordination chemistry.

Eu was used to substitute Ca in the orthorhombic KCoO-type layered CaTiN to form a CaEuTiN solid solution, which showed a limited substitution around = 0.35 with the tetragonality enhanced but the orthorhombic symmetry retained and inaccessibility for the end member EuTiN. This was in contrast with the full solid solution CaSrTiN, which realized a structural transition from orthorhombic to tetragonal at = 0.

BaLaVON: a novel anti-perovskite oxynitride for electrode applications.

The exploration of transition metal oxynitrides has garnered significant interest due to their intriguing property diversity. Herein, we present a promising new transition metal oxynitride BaLaVON, which features an anti-perovskite structure type. This unique structural configuration endows the material with remarkable conductivity, particularly at low temperatures, paving the way for the material to be used in a wide range of technological applications.

Interplanar Ferromagnetism Enhanced Ultrawide Zero Thermal Expansion in Kagome Cubic Intermetallic (Zr,Nb)Fe.

A cubic metal exhibiting zero thermal expansion (ZTE) over a wide temperature window demonstrates significant applications in a broad range of advanced technologies but is extremely rare in nature. Here, enabled by high-temperature synthesis, we realize tunable thermal expansion via magnetic doping in the class of kagome cubic (-3) intermetallic (Zr,Nb)Fe. A remarkably isotropic ZTE is achieved with a negligible coefficient of thermal expansion (+0.