Organic field-effect transistors (OFETs) are fundamental building blocks for flexible electronics, including flexible displays, wearable sensors and electronic skin. However, at the heterointerface between the organic semiconductor (OSC) and the dielectric layer where charge transport takes place, structural and energetic disorders inevitably introduce defects, which adversely affect device stability. To address these challenges, researchers from Tianjin University and collaborating institutions have developed a novel interfacial engineering strategy, in which ultrathin alkyl chains of alkylated OSC molecules are covalently attached to the OSC backbone. This approach effectively reduces the trap density at the OSC/dielectric interface, thereby enabling stable OFET operation. In addition, this strategy substantially decreases the dielectric layer thickness, which facilitates low‑voltage operation. As a result, OFETs constructed on the basis of this strategy operate stably at a low voltage of −1 V for over 10,000 s, while integrated logic circuits achieve high gain, fast switching and robust stability. This work provides a new pathway toward high-reliability flexible electronics.

A research team from Tiangong University has published a systematic practice-oriented review in Science Bulletin, establishing a unified semi-quantitative industrial evaluation framework covering eight core dimensions for lithium-ion battery prelithiation technologies. The framework enables objective head-to-head comparison of eight representative prelithiation strategies, provides a scenario-specific decision matrix for five typical application scenarios, and distills five universal design rules for next-generation solutions, closing the long-standing gap between laboratory innovation and large-scale battery manufacturing.

Replacing petroleum-based synthetic fibers with sustainable bio-derived materials is critical to curbing global microplastic pollution, but biomass fibers have long been limited by insufficient mechanical performance. Researchers from Anhui Agricultural University and Zhejiang University developed high-performance cellulose metafibers (Meta-CFs) using a scalable hydrodynamic twisting strategy. By guiding continuously twisted structures on chemically cross-linked cellulose networks via an asymmetric microfluidic field, the team achieved a record tensile strength of 3.29 GPa and a toughness of 349.5 MJ m^–3—rivaling both high-performance synthetic fibers and natural spider silk. The fibers can be scaled into bundles while retaining GPa-level strength, are fully biodegradable, and have been validated as durable trimmer lines that eliminate persistent agricultural microplastic residues.

Extended reality (XR) aims for "immersion," requiring displays to simultaneously deliver a wide field of view (FOV) and true 3D imagery free of vergence-accommodation conflict (VAC). Researchers in China have reported a near-eye light-field display architecture based on a heterogeneous metalens array. By integrating lens and spatially heterogeneous prism phase designs with nanoimprint technology, the array overcomes the aberration-induced FOV limit of conventional microlens arrays, providing a hardware path for next-generation immersive XR displays.

On 1 August 2025, China's GBZ 337–2025 Diagnostic Standard for Occupational Post-Traumatic Stress Disorder came into force.1 For the first time, post-traumatic stress disorder (PTSD) among emergency responders, including police, firefighters and medical personnel, has been formally recognised as an occupational condition, eligible for compensation under the country's occupational injury system. This move marks a significant institutional acknowledgement that psychological trauma can be as disabling and deserving of protection as physical injury. Far from an isolated policy decision, GBZ 337–2025 marks a milestone in decades of evolving scientific understanding, public awareness and policy development, shaped by the lived experiences of natural disasters and public health emergencies in China.

Although experimental evidence supports links between exercise and certain mental health indicators, epidemiological research has focused primarily on the dose–response effect of a single type of exercise, overlooking potential differences across exercise types in their associations with overall and specific mental health outcomes.To examine the associations between different types of exercise and multiple mental health outcomes, including depression, anxiety, post-traumatic stress disorder, suicidal ideation, suicide attempts and nonsuicidal self-injury, and to explore their dose–response relationships in terms of exercise frequency and duration.

Pulmonary vein isolation alone frequently yields suboptimal long‑term rhythm control for patients with persistent atrial fibrillation, and manual substrate ablation produces inconsistent results across centers. This systematic review and meta‑analysis pooled data from three eligible studies enrolling 322 persistent atrial fibrillation patients, published in Cardiology Discovery. After the 3‑month post‑ablation blanking period, pooled 12‑month freedom‑from‑atrial‑fibrillation reached 87% (95% CI, 82%‑91%). One included randomized controlled trial demonstrated 89% arrhythmia‑free survival for artificial‑intelligence‑guided ablation versus 67% for standard pulmonary vein isolation alone. Authors caution that the small body of available evidence requires further validation in large‑scale multicenter trials.

A modelling study finds that banks form interbank networks by balancing the benefits of sharing liquidity risk against incentives to rely on other banks' reserves. As networks grow, risk-sharing can initially improve expected profits, but free-riding can later reduce them. The findings suggest that relatively small networks may be most efficient and offer insights into “too-big-to-fail” and “too-interconnected-to-fail” risks.