Chinese Academy of Sciences

Electrically controllable superconducting memory effect in UTe2

Abstract Multiphase superconductors—materials that host two or more distinct superconductive phases—are exceptionally rare. Examples include heavy-fermion CeRh 2 As 2 alongside some uranium compounds such as UPt 3 and URhGe (refs. 1,2,3 ). In the multiphase p -wave superfluid 3 H...

Extratropical teleconnections in a multi-model ensemble nudged towards the observed QBO

The Quasi-Biennial Oscillation (QBO), the dominant mode of interannual variability of monthly-mean zonal winds and temperatures in the equatorial stratosphere, has a significant influence on the circulation in other regions of the stratosphere and troposphere in boreal winter. To...

Magnetic Reconnection Driven by the Impact of a Magnetosheath High‐Speed Jet

Abstract High‐speed jets (HSJs) are transient structures in the magnetosheath characterized by enhanced dynamic pressure. While recent studies report that HSJs trigger magnetic reconnection at the magnetopause, whether they can directly drive reconnection within the magnetosheath...

Large tunneling magnetoresistance in room temperature magnetic tunnel junctions based on altermagnetic XV2Y2O

This work presents a comprehensive investigation of spin-dependent quantum transport properties of the emerging layered room temperature metallic altermagnet family X V 2 Y 2 O ( X = K, Rb, Cs; Y = S, Se, Te), based on first-principles calculations combined with the non-equilibri...

A Deep Model Framework for Morphological Trait Imputation Across Taxonomic Groups

ABSTRACT Incomplete morphological trait data pose major hurdles for trait‐based analyses, particularly when missing values, multicollinearity, and sparse sampling constrain inference. These issues limit our ability to quantify trait variation and explore broad patterns of functio...

How surface governs vibration-induced degradation of glass Structure: A view from molecular dynamics

Silica glass, renowned for its exceptional thermal stability and mechanical strength, is widely used in optics, manufacturing, and aerospace. However, the mechanisms underlying its structural degradation under external vibrational fields is still rare due to the inherent disorder...

Interpenetration Transformation of Diacetylene Metal–Organic Frameworks for Topochemical Polymerization

Achieving precise control over topochemical polymerization in diacetylene metal-organic frameworks (MOFs) remains a huge challenge due to the stringent requirements for molecular alignment and ordered stacking. Herein, we report two interpenetrated MOFs (twofold interpenetrated C...

Manure to insect farming for feed mitigates nitrogen and greenhouse gas emissions

Livestock manure is nutrient-rich and represents a promising feedstock for insect farming, with insect protein offering a high-quality alternative to conventional crop-based livestock feed. This pathway has substantial potential to mitigate nitrogen (N) and greenhouse gas (GHG) e...

Dynamic deformation and fracture of porous cement: A high-speed X-ray phase contrast imaging study

Investigations on mechanical responses and failure mechanisms of porous cement to dynamic compression are essential for its applications as impact energy absorption material. This study conducts split Hopkinson pressure bar tests along with in situ high-speed X-ray phase contrast...

TPHH: a long-term (1901–2023) high-resolution (1∕30°) near-surface humidity dataset for the Tibetan Plateau generated via spatial downscaling based on hybrid-structure deep learning

The Tibetan Plateau acts as the “Asian Water Tower” and faces regional amplified warming compared to the global climate change baseline. Given the Tibetan Plateau's pronounced alpine terrain, i.e., significant elevation gradients within short horizontal distances, studies on clim...

Geographic bias in the fossil record: tests using Chinese early Paleozoic echinoderms

Abstract The greater diversity of fossils known from North America and Europe, plus the correlation between outcrop area and paleobiodiversity, introduce a potential bias in the fossil record. We develop tests to detect actual bias using recent discoveries of Chinese early Paleoz...

Geometrical-optics resonator photonics

Conventional waveguide optical resonators face inherent limitations of low damage thresholds, limited coupling tunability, and stochastic resonance. To overcome these, we introduce a geometrical-optics resonator (GOR) framework, emulating free-space reflection and thin-film coupl...

Simulation and Multi-Time Scale Attribution Analysis of Actual Evapotranspiration in the Source Region of the Yangtze River, China

The Yangtze River Basin is a critical water supply region in China. To quantify the contributions of climate change and human activities to water resources across multiple temporal scales, this study focuses on actual evapotranspiration (AET), which directly influences water avai...

Mitochondrial genetic diversity, population structure and late Pleistocene demographic expansion of Evynnis cardinalis in the northern South China Sea

Understanding how historical processes and contemporary oceanography shape population connectivity and demographic dynamics is essential for effective management of coastal marine fishes. In this study, we investigated the genetic diversity, population structure, and demographic...

Vision-language sample scoring with dynamic coverage-centric strategies

Data pruning reduces image-classifier training cost by replacing a full training set with a coreset. Existing methods often require training a target or proxy model to estimate sample importance, which ties data selection to a particular architecture. In addition, common allocati...

Strong Polarons Enable High‐Performance Perovskite Optoelectronic Synaptic Diode Array for In‐Sensor Computing

ABSTRACT Halide perovskites, with their outstanding photovoltaic properties, are ideal materials for constructing optoelectronic synaptic diodes (OSDs) in in‐sensor computing. High recognition accuracy requires OSDs to generate a large number of photoresponsivity states and have...

Disentangling the effect of space and electric field on photoelectrochemical water splitting

Photoelectrochemical water splitting is a promising pathway for renewable solar fuel production. The photoelectrochemical performance strongly depends on the charge separation ability within the space charge layer. In space charge layer, the charge dynamics should be governed by...

Multiple Argonaute complexes orchestrate epigenetic silencing in the Arabidopsis germline

Abstract Small RNAs (sRNAs) are widespread across diverse flowering plant species and play important roles regulating reproduction and environmental responses. However, how sRNAs exert their function is largely unknown, likely due to their typical origin in non-genic regions, the...

A segmented surrogate model for THMC responses in the near-wellbore zone of super-long gravity heat pipes

The super-long gravity heat pipe, as an emerging technology for deep geothermal exploitation, has attracted considerable attention owing to its "pumpless" heat extraction feature. The heat extraction process involves complex coupled thermal-hydraulic-mechanical-chemical (THMC) Mu...

Persistent silicate weathering and carbon dioxide uptake in eolian drylands since the late Pliocene

Semi-arid and arid regions are largely omitted from long-term geological-scale carbon budgets due to the assumed weakness of silicate weathering. Here we reconstruct annual carbon dioxide (CO₂) consumption by silicate weathering (CO₂(SIW)) using red clay and loess–paleosol sequen...