β-Gallium oxide (β-Ga2O3) is a superior material for power electronic applications due to ultra-wide bandgap and high critical field strength. The bottlenecking issue for its application lies in promoting heat dissipation and robust interfacial contact. Opposite to the common notion that a clean interface leads to high thermal conductivity, here we demonstrate an opposite strategy with alloying the

Conductive hydrogels with water-enriched pores have shown great potential in electromagnetic wave protection and flexible wearable electronics. However, hydrogel with high water content often results in some challenges such as water loss and low-temperature freezing. In this study, porous gelatin/ChCl/MXene Ti3C2Tx (GCM) hydrogels were prepared via a facile one-pot method. The introduction of ChCl

In the post-Moore era, silicon-based electronic devices have reached their physical limits, impeding significant performance enhancements through further miniaturization of transistor size. Two-dimensional (2D) materials have demonstrated considerable potential for application in electronic devices due to their superior optoelectronic properties, providing new ideas and methods to solve this problem

A broad range of unusual transport behaviors have been discovered in topological semimetals. However, to date, the effect on the thermopower from intrinsic momentum exchange between electrons and phonons has received little attention. Here we report that huge electron-phonon drag enhancements of the thermopower of the topological semimetal, θ-phase tantalum nitride (θ-TaN), can occur that persist even

Lithium lanthanum titanate oxide (LLTO) presents significant potential as a solid electrolyte in all-solid-state Li-ion batteries. However, its ionic conductivity requires enhancement for broader applications. In this study, we conducted first-principles calculations to explore the impact of metal doping on LLTO's ionic mobility. LLTO showed uneven ionic diffusion characterized by singular Li-O bonds

Ternary hydrides, with richer chemical compositions and structures compared to binary hydrides due to their high degrees of freedom, are expected to contain more candidates for high-Tc superconductors with remarkable properties including higher Tc and lower stabilizing pressures. In this work, the high-pressure structures, electronic properties, and superconductivity of MgZrH2n (n=1-6) ternary system

The coexistence and competition between the well-known quantum phenomena such as superconductivity, charge density wave (CDW), and band topology represent a cutting-edge frontier in the field of condensed matter physics. Two-dimensional (2D) Janus transition metal sulfide hydrides, a family of materials known for hosting diverse quantum phenomena, have drawn extensive attention recently. In this work

Transition metal diborides (MB2), characterized by their simple crystal lattice structure and wide linear dispersion range, serve as an ideal system for exploring novel topological states and anomalous physical properties. In this study, we report a temperature-induced Fermi surface reconstruction at around 100 K and the anomalous magnetotransport behaviors mediated by it in nodal line semimetal TiB2

Phonons play a critical role in determining various material properties, but conventional methods for phonon calculations are computationally intensive, limiting their broad applicability. In this study, we present an approach to accelerate high-throughput harmonic phonon calculations using machine learning universal potentials (MLIPs) combined with an efficient training dataset generation strategy

Thermoelectric (TE) power generators provide an effective solution for recovering low-grade heat, driving the development of high-performance Bi2Te3 alloys. In this study, we enhanced the peak ZT to 1.43 at 350 K by incorporating perovskite-type ZnSnO3 nanoparticles into Bi0.4Sb1.6Te3, surpassing the performance of most (Bi,Sb)2Te3-based composites. The enhancement is attributed to the in-situ reaction

GeTe, known for its superior thermoelectric performance, undergoes a structural transition from low temperature rhombohedral to high temperature cubic phase at around 700 K. This phase transition is the primary obstacle to its practical applications. Alloying Mn at the Ge site can inhibit the phase transition and stabilize the cubic structure down to room temperature, while simultaneously degrading

Near room-temperature thermoelectric materials have promising applications for recovering low-grade waste heat, but high-performance p-type thermoelectric candidates are quite limited if compared with n-type ones. It is thus important to design new p-type materials with superior thermoelectric performance. AgSbTe2 has received plenty of attention as a promising p-type material candidate due to its

While there is a relatively clear understanding of the deformation mechanisms of parallel nanotwinned diamonds with a single-orientated twin plane under shear strain from both experimental and theoretical studies, significant discrepancies remain between single-orientated parallel twins and experimentally observed twinned structures. These discrepancies hinder a comprehensive explanation of the structural

A two-terminal artificial synaptic memristor capable of emulating the discrimination ability in human brain is an essential prerequisite for realizing neuromorphic computing architectures through straightforward crossbar array, however, it is still a challenge yet. Here, a multi-functional synaptic memristor is reported, based on bismuth oxybromide (BiOBr) nanosheets, in which enables advanced pattern-discriminating

β gallium oxide (β-Ga2O3) is considered as a primary choice for solar-blind ultraviolet (SBUV) detection because of its advantages such as intrinsic solar-blindness and robust stability. Nevertheless, the inherent low electron mobility of β-Ga2O3 poses a significant challenge to its application. Here, β-Ga2O3 films were integrated with gallium nitride (GaN) substrates through metal-organic chemical

Ga2O3, as an ultra-wide bandgap semiconductor, has promising applications, e.g. solar-blind ultraviolet detectors, but is hindered by issues related to thermal conductivity and the P-type doping method. This study prepared P-N heterojunction via Ta-doped β-Ga2O3 films on B-doped mono-diamonds. We found that the multi-valence states of doped Ta coexisted in β-Ga2O3 films, leading to a transmittance

Flexible pressure sensors are widely used in human health detection and human-machine interface interaction. In this paper, a 3D porous flexible pressure sensor based on carbon nanotubes (CNT)/carbon black (CB)/thermoplastic polyurethane (TPU)/polyurethane (PU) sponge is studied. This sensor exhibits good sensitivity, stability and washability. The sensing layer utilizes a conductive network formed

β-Ga2O3, with its ultrawide band gap (∼4.9 eV) and high critical electric field, holds potential in power electronics but is limited by low thermal conductivity, which is critical to the performance and reliability because the high level of heat flux density induced by the extremely high levels of power density. Combining first-principles calculations, machine-learning potentials, and solving the phonon

Most high-performance thermoelectric materials, such as Bi2Te3, PbTe, and SnTe, rely on the costly and scarce element like tellurium, limiting their practical use. Recently PbSe has emerged as a promising candidate, showing high peak figure of merit (ZT) values at 900 K. However, PbSe is intrinsically p-type due to the lower formation energy of Pb vacancies, undermining the development of its n-type

Molten carbonates with high operating temperatures and excellent thermal properties are very promising phase change material for high temperature thermal energy storage. However, the structure and thermal properties of carbonates at high temperatures are lacking and difficult to measure accurately. Here, a deep potential model of ternary eutectic carbonates was developed by using first-principles molecular

Exploring the lower bound of thermal conductivity in fully dense solids holds significant fundamental and practical importance. Rotation stacked layered materials have been proven as a unique platform to achieve low thermal conductivity, but the reported performance should be partially attributed to the size effects of the ultrathin film. Here, we theoretically demonstrate the possibility of using

The pillar-array interdigitated solid-state super cap-electronics (PISSC) is a cutting-edge energy storage device with a narrow gap between isolated electrode channels, allowing for faster ionic switching and lower ionic resistance. Notably, we fabricated a symmetric supercapacitor (SnS2‖PVA-LiClO4‖SnS2) using electron beam evaporation and employed physical vapor deposition (PVD) to construct thin

High spin Chern-number insulators (HSCI) have emerged as a novel 2D topological phase of condensed matter that is beyond the classification of topological quantum chemistry. The HSCI phase with two pairs of gapless helical edge states is robust even in the presence of spin–orbit coupling due to the protection of a “hidden” feature spectrum topology. In this work, we report the observation of a semimetallic

The Ising superconductor, due to its unique upper critical magnetic field, has become one of the most prominent subjects in the field of two-dimensional materials in recent years. Currently, the researches on Type I Ising superconductors mainly focus on transition metal chalcogenides (TMDs), however, the limited superconducting transition temperature (Tc) restricts their practical application. In addition

Thermochromic windows have been studied as a promising solution for energy-efficiency with the dynamical adjustment of solar heating in response to temperature. Recent advancements in the field have introduced simultaneous multiband modulation, incorporating radiative cooling in the longwave infrared range. In this work, we present VO2(M)/TiO2(A)/ITO multilayer-coated glass (referred to as VTI) as

The intrinsic ferromagnetic topological insulators MnBi8Te13 provide a promising material platform for the realization of diverse exotic topological quantum states, such as quantum anomalous Hall effect and axion-insulator state. The planar Hall effect (PHE) has significant advantages for the characterization of intrinsic magnetic properties in magnetic materials and applications to spintronic devices

Ultra-wide bandgap semiconductors like Ga2O3, presenting intrinsic spectral selectivity in the UV-C region of the electromagnetic spectrum, are especially well suited for application as solar-blind photodetectors. In this work, photodiodes based on a planar hybrid heterojunction between Ga2O3 and an organic semiconductor are fabricated.

GeTe-MnTe-based materials have been proposed as promising thermoelectric materials due to the ineluctable phase transition of GeTe materials. However, the previously reported Ge1-xMnxTe alloys with low MnTe content may mix with the rhombohedral phase of GeTe, making the sample unstable during thermal cycling. Moreover, the exact phase of GeTe-MnTe-based alloys have not been thoroughly studied. In this

Due to the limitations in structure and loss mechanisms, achieving both excellent reflection loss and broadband electromagnetic absorption simultaneously has been challenging for SiC-based materials. In this study, an innovative approach was adopted to fabricate Al2O3-modified SiC (SiC/Al2O3) ceramic matrix composites by polymer impregnation and pyrolysis method, and oxidation of a carbon framework

Understanding thermal transport in amorphous materials is critical for a wide range of applications, including buildings, vehicles, aerospace, and acoustic technologies. Despite its importance, the fundamental behavior of heat carriers in amorphous structures remains poorly understood and is often attributed to localized vibrational modes with mean free paths of about 1 nm, posing significant challenges

Conductive hydrogels with poor mechanical properties seriously limit the service life of sensors and flexible electronics. Outstanding mechanical properties and electrical conductivity are the bottleneck of the application of conductive hydrogels. To combined excellent elasticity and electronic conductivity, herein, a new method was employed to achieve elastic dissipation with low hysteresis via introduce

Lead-free dielectric ceramics, as vital components of eco-friendly advanced pulse power systems, have encountered challenges for simultaneously achieving excellent energy-storage density (Wrec) and efficiency (η) at moderate electric fields. To address this issue, a novel class of (1-x)(Na0.5Bi0.5)0.75Sr0.25TiO3-x(K0.5Ag0.5)0.97Bi0.01NbO3 (NBST-xKABN, x = 0, 0.05, 0.10 and 0.15) relaxor ferroelectric