Research Article

Unveiling of a puzzling dual ionic migration in lead- and iodide-deficient halide perovskites (d-HPs) and its impact on solar cell J–V curve hysteresis

In the present paper, a phenomenon of ionic migration of large organic cations in the lead- and iodide-deficient perovskite films is unveiled. This phenomenon is intrinsic to the structure and at the origin of a large hysteresis in the measured J–V curves. Contrary to iodide, it cannot be fully blocked through defect passivation by potassium …

Unveiling of a puzzling dual ionic migration in lead- and iodide-deficient halide perovskites (d-HPs) and its impact on solar cell J–V curve hysteresis Read More »

Viscoelastic blood coagulation testing system enabled by a non-contact triboelectric angle sensor

Thromboelastography (TEG) remains a convenient and effective viscoelastic coagulation testing device. This paper presents a novel TEG enabled by a miniaturized triboelectric coagulation sensor, which can realize a comprehensive assessment of the coagulation system and is expected to promote the miniaturization of traditional TEGs. Abstract: Thromboelastography (TEG) remains a convenient and effective viscoelastic blood coagulation …

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Deep-learning enabled smart insole system aiming for multifunctional foot-healthcare applications

This paper proposes a deep-learning enabled wearable smart insole system. With a highly sensitive capacitive pressure sensing insole and deep-learning enabled data analysis process, it provides long-term data analysis, early prevention indicators, and deep insights into the relationship between plantar pressure and foot issues. Various foot-healthcare applications are proven, including daily statistics, exercise injury avoidance, …

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Dichroic switching of core–shell plasmonic nanoparticles on reflective surfaces

Spray coating of the obtained core/shell nanostructures (a metal core and a dielectric shell) on reflective substrates produces dichroic films that can display colour switching at different viewing angles. The unique dichroic effect and high-contrast colour-switching are achieved by leveraging the resonant scattering and absorption of light by plasmonic nanostructures and the specular reflection of …

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Understanding the improvement mechanism of plasma etching treatment on oxygen reduction reaction catalysts

This work studies the electrocatalytic activity improvement mechanism of the plasma etching treatment on oxygen reduction reaction catalysts, which reveals that the highly active metal-nitrogen species induced by nitrogen plasma treatment is the main active contributor of the improved electrocatalytic activity. Abstract: Plasma etching treatment is an effective strategy to improve the electrocatalytic activity, but …

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Programmed initiation and enhancement of cGAS/STING pathway for tumour immunotherapy via tailor-designed ZnFe2O4-based nanosystem

Tailor-designed ZnFe2O4-based nanosystem can respond to the tumour microenvironment and stimulate anti-tumour immune responses by enhancing the cGAS/STING pathway. Moreover, it remodels immunosuppressive microenvironment, and effectively inhibits tumour growth as well as postoperative recurrence. Abstract: The cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS)/stimulator of interferon genes (STING) signalling pathway has been a promising target for anticancer …

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Spatial transcriptomic analysis of the mouse brain following chronic social defeat stress

In this study, Wang et al. explored the potential pathogenesis of chronic social defeat stress (CSDS)-induced depressive-like behaviour in mice using 10× Visium spatial transcriptomics (ST) technique. Many of the depression-related gene changes were identified and more pronounced in the hippocampus (HIP), cortex (Isocortex), and amygdala (AMY) in susceptible (SUS) mice compared to control and resilient …

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Early monitoring-to-warning Internet of Things system for emerging infectious diseases via networking of light-triggered point-of-care testing devices

There is still no epidemic surveillance system, implementing prevention and control measures is slow and inefficient. This study developed a rapid point-of-care (POC) testing device for detecting pathogens. Through multi-device networking, an early monitoring and warning system for major infectious diseases was developed. This study makes a contribution to the urgent need for a system …

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Surface engineering Salmonella with pH-responsive polyserotonin and self-activated DNAzyme for better microbial therapy of tumor

This study presents a novel surface modification approach aimed at enhancing the biomedical applications of Salmonella. By employing a facile surface engineering technique involving pH-responsive polyserotonin (PST) and self-activated DNAzyme, the immune clearance and non-specific colonization of Salmonella can be effectively mitigated. The PST coating exhibits the ability to disassemble in acidic tumor microenvironments, thereby facilitating the controlled …

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Electrospun PEO/PEG fibers as potential flexible phase change materials for thermal energy regulation

Thermal regulating fabrics are highly applicable in various industries such as bandages, wearable devices, clothing, or facemasks. In this work, PEO is electrospun with PEG as the PCM and plasticizer component, which show great compatibility and produce uniform fibers. Presence of PEG significantly improve the fiber’s mechanical properties, and supercooling for PEG component effectively reduce …

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