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The anomalous photovoltaic (APV) effect with an above-bandgap photovoltage and polarization-dependent photocurrent shows unique advantages in the field of photoelectronics in comparation to the conventional semiconductor photovoltaic effect. With the combination of the flexoelectric effect, the APV effect can be extended to a large pool of materials systems than to ferroelectric materials. Herein, we present the self-biased photoelectric performance of centrosymmetric BiVO4(BVO) driven by the APV effect induced by applying unidirectional mechanical polishing. In addition, nitrogen doping was realized on BVO ceramics by annealing treatment under a gaseous NH3environment to further optimize the photovoltaic outputs and the photoresponse range. It was observed that N doping effectively improves its photoabsorption at the visible light range. Under zero external bias, in comparison to pure BVO, N-doped BVO exhibits an open-circuit voltage improved from 6 to 14.1 V and a short-circuit photocurrent improved from 0.5 to 0.9 nA when illuminated by a 405 nm laser at 100 mW/cm2. Besides, the short-circuit photocurrent shows a fast response time and a high light on/off ratio above 103. These findings verify the potential of N-doped BVO ceramics for self-powered photoelectric applications despite the centrosymmetric structure.

A MoS2-based electrochemical aptasensor has been developed for the simultaneous detection of thrombin and adenosine triphosphate (ATP) based on gold nanoparticles-decorated MoS2(AuNPs–MoS2) nanocomposites. Two different aptamer probes labeled with redox tags were simultaneously immobilized on an AuNPs–MoS2film modified electrode via Au–S bonds. The aptamers presented structural switches with the addition of target molecules (thrombin and ATP), resulting in methylene blue (MB) far from or ferrocene (Fc) close to the electrode surface. Therefore, a dual signaling detection strategy was developed, which featured both “signal-on” and “signal-off” elements in the detection system because of the target-induced structure switching. This proposed aptasensor could simultaneously determine ATP and thrombin as low as 0.74 nM ATP and 0.0012 nM thrombin with high selectivity, respectively. In addition, thrombin and ATP could act as inputs to activate an AND logic gate.

Shifting climate zones are widely used to diagnose and predict regional climate change. However, few attempts have been made to measure the spatial redistribution of these climate zones from a spatial structure perspective. We investigated changes in spatial structure of Köppen climate landscape in China between 1963 and 2098 with a landscape aggregation index. Our results reveal an apparent signal from fragmentation to aggregation, accompanied by the intensification of areal dispersion between cold and warm climate types. Our attribution analysis indicates that anthropogenic forcings have a larger influence on changes of spatial structure than natural variation. We also found that topographical heterogeneity is likely to contribute to the regional spatial fragmentation, especially in the Qinghai‐Tibet Plateau. However, we also found that the spatial fragmentation will be weakened around the mid‐2040s. We argue that biodiversity is likely to be mediated by spatial structure of future climate landscapes in China. Shifting climate zones are the most extensively tool for measuring the global and regional climate change, so understanding how they evolve is crucial to improving our ability to diagnose and predict climate change and its potential ecological influences. Previous studies have focused on the area‐based shifts between different climate types. However, little attempts have been made to analyze the spatial structure of change in China, simultaneously, causing an apparent gap in the understanding of shifting climate zones. In this study, we investigate changes in the spatial structure of Köppen climate landscape in China between 1963 and 2098 and track its characteristics and driving forces. We reveal an apparent opposite signal from fragmentation to aggregation under SSP5‐8.5 scenario. Our attribution analysis indicates that anthropogenic forcings have dominated the evolution of spatial structure over natural ones. Topographical heterogeneity is a well‐known factor that exacerbates spatial fragmentation, especially in the Qinghai‐Tibet Plateau. We argue that mitigation and adaptation of biodiversity will be regulated by the spatial structural changes of China's climate landscape, and will pose a challenge to biodiversity conservation in the future warming scenario. A simplified “patch mosaic” model borrowed from landscape ecology was used to assess spatial redistribution of climate zonesFrom 1963 to 2098, an apparent signal from fragmentation to aggregation was detectedTopographic heterogeneity exacerbates the fragmentation of regional spatial structure A simplified “patch mosaic” model borrowed from landscape ecology was used to assess spatial redistribution of climate zones From 1963 to 2098, an apparent signal from fragmentation to aggregation was detected Topographic heterogeneity exacerbates the fragmentation of regional spatial structure