Pub Date : 2025-12-15DOI: 10.1016/j.scib.2025.12.016
Zhigang Chen
{"title":"Vortices at the Dirac point: twisting quantum matter in artificial graphene.","authors":"Zhigang Chen","doi":"10.1016/j.scib.2025.12.016","DOIUrl":"https://doi.org/10.1016/j.scib.2025.12.016","url":null,"abstract":"","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":21.1,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145831812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-08DOI: 10.1016/j.scib.2025.12.004
Min Feng, Jinhao Xu, Xuefei Zhang, Dezhao Yan, Xin Li, Andreas Kääb, Fahu Chen, Guodong Cheng
Rock glaciers, periglacial landforms with tongue- or lobe-shaped streams of slowly deforming frozen debris, play an important role in periglacial mountainous regions. The understanding of rock glaciers and their geoecological role at regional scales has been considerably hampered due to survey difficulties. We employ an automated approach for identifying rock glaciers and compile for the first time a complete rock glacier survey over the entire Tibetan Plateau. We find over 130,000 individual rock glaciers, much more than expected from previous inventories over any areas on Earth, also suggesting that the global number of rock glaciers is significantly underestimated today. We reveal an underestimated source of water storage to the Asian Water Tower and an enormous material flux due to rock glacier creep, which warrants consideration for its potential impact on downstreams. This result is also important for improving the modeling of mountain permafrost for a better anticipation of climate change impacts.
{"title":"Underestimated number and significance of rock glaciers on the Tibetan Plateau.","authors":"Min Feng, Jinhao Xu, Xuefei Zhang, Dezhao Yan, Xin Li, Andreas Kääb, Fahu Chen, Guodong Cheng","doi":"10.1016/j.scib.2025.12.004","DOIUrl":"https://doi.org/10.1016/j.scib.2025.12.004","url":null,"abstract":"<p><p>Rock glaciers, periglacial landforms with tongue- or lobe-shaped streams of slowly deforming frozen debris, play an important role in periglacial mountainous regions. The understanding of rock glaciers and their geoecological role at regional scales has been considerably hampered due to survey difficulties. We employ an automated approach for identifying rock glaciers and compile for the first time a complete rock glacier survey over the entire Tibetan Plateau. We find over 130,000 individual rock glaciers, much more than expected from previous inventories over any areas on Earth, also suggesting that the global number of rock glaciers is significantly underestimated today. We reveal an underestimated source of water storage to the Asian Water Tower and an enormous material flux due to rock glacier creep, which warrants consideration for its potential impact on downstreams. This result is also important for improving the modeling of mountain permafrost for a better anticipation of climate change impacts.</p>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":21.1,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145792961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Metal-organic frameworks (MOFs), owing to their tunable pore environments and abundant hydrogen-bonding sites that enable the formation of continuous transport pathways, are widely regarded as promising candidates for proton-conducting material. Despite extensive research, most efforts have been devoted to bulk forms, such as powders and single crystals, which are hindered by long diffusion pathways, random orientation, and limited processability, thereby restricting their intergration into device. Recent progress in fabricating high-quality MOF membranes has addressed these challenges, while preserving high proton conductivity. Although notable progress has been achieved, a systematic review of proton-conducting MOF membranes remains absent. In this review, we present a comprehensive overview of proton-conducting MOF membranes, encompassing design strategies, conduction mechanisms, systematic classification, representative fabrication approaches, and their application. Particular emphasis is given to their broader application landscape, extending beyond proton exchange membrane fuel cells to include light-controlled protonic devices, proton sensors, protonic field-effect transistors, and proton rectifiers. By consolidating advances and outlining remaining challenges, this review aims to clarify design principles and guide future research toward integrating MOF membranes into next-generation protonic technologies.
{"title":"Recent advances and perspectives in proton-conducting metal-organic framework membranes.","authors":"Jiangfeng Lu, Yiming Xu, Yongjun Chen, Xiaoqing Yu, Guane Wang, Hiroshi Kitagawa, Gang Xu","doi":"10.1016/j.scib.2025.12.009","DOIUrl":"https://doi.org/10.1016/j.scib.2025.12.009","url":null,"abstract":"<p><p>Metal-organic frameworks (MOFs), owing to their tunable pore environments and abundant hydrogen-bonding sites that enable the formation of continuous transport pathways, are widely regarded as promising candidates for proton-conducting material. Despite extensive research, most efforts have been devoted to bulk forms, such as powders and single crystals, which are hindered by long diffusion pathways, random orientation, and limited processability, thereby restricting their intergration into device. Recent progress in fabricating high-quality MOF membranes has addressed these challenges, while preserving high proton conductivity. Although notable progress has been achieved, a systematic review of proton-conducting MOF membranes remains absent. In this review, we present a comprehensive overview of proton-conducting MOF membranes, encompassing design strategies, conduction mechanisms, systematic classification, representative fabrication approaches, and their application. Particular emphasis is given to their broader application landscape, extending beyond proton exchange membrane fuel cells to include light-controlled protonic devices, proton sensors, protonic field-effect transistors, and proton rectifiers. By consolidating advances and outlining remaining challenges, this review aims to clarify design principles and guide future research toward integrating MOF membranes into next-generation protonic technologies.</p>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":21.1,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145792906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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