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A Self-Aligned Process to Fabricate a Metal Electrode-Quantum Dot/Nanowire-Metal Electrode Structure with 100% Yield

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Chinese Physics Letters 2012年第9期29卷 203-205页

作者： FU Ying-Chun WANG Xiao-Feng fan zhong-chao YANG Xiang BAI Yun-Xia ZHANG Jia-Yong MA Hui-Li JI An YANG Fu-Hua Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083 The State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083

Using lateral phase change random access memory(PCRAM)for demonstration,we report a self-aligned process to fabricate a metal electrode-quantum dot(QD)/nanowire(NW)-metal electrode *** to the good confinement and coupling between the Ge_(2)Sb_(2)Te_(5)(GST)QD and the tungsten electrodes,the device shows a threshold current and voltage as small as 2.50μA and 1.08 V,*** process is highlighted with good controllability and repeatability with 100%yield,making it a promising fabrication process for nanoelectronics.

关键词： structure. electrode process

Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu Jing Wu Guang Yin fan‑Zhen Jiao zhong‑Zhen Yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

感应耦合等离子体刻蚀InP/InGaAsP二维光子晶体结构的研究

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物理学报 2007年第2期56卷 977-981页

作者：马小涛郑婉华任刚樊中朝陈良惠中国科学院半导体研究所纳米光电子实验室北京100083

为实现基于InP/InGaAsP材料的二维光子晶体结构低损伤、高各向异性的干法刻蚀,研究了对InP材料基于Cl2/BCl3气体的感应耦合等离子体刻蚀.从等离子体轰击使衬底升温的角度分析了刻蚀机理,发现离子轰击加热引起的侧蚀与物理溅射在侧壁再... 详细信息

为实现基于InP/InGaAsP材料的二维光子晶体结构低损伤、高各向异性的干法刻蚀,研究了对InP材料基于Cl2/BCl3气体的感应耦合等离子体刻蚀.从等离子体轰击使衬底升温的角度分析了刻蚀机理,发现离子轰击加热引起的侧蚀与物理溅射在侧壁再沉积之间处于平衡时可以得到高各向异性刻蚀,平衡点将随ICP功率增高而向偏压减小方向移动,从而在近203V偏压下得到陡直的侧壁.在优化气体组分后,成功实现了光子晶体结构高各向异性的低偏压刻蚀.

关键词：光子晶体 InP/InGaAsP 感应耦合等离子体 Cl2/BCl3 低偏压刻蚀

Tackling the microlensing wave effects of strong lensing gravitational waves with TAAH

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 257-258页

作者： Zuhui fan South-Western Institute for Astronomy Research Yunnan University

The rapid development of gravitational wave（GW） observations since their first detection in 2015 [1] has opened a completely new window for exploring the Universe. Consequently, astronomical research has entered the multimessenger era, allowing us to use different tracers to view the cosmos from various perspectives. Among others, the appealing application of gravitational wave events from compact binary mergers is that they can act as standard sirens to determine absolute cosmic distances entirely independent of standard candles. This approach is one of the most promising means to solve the current H0tension problem.

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Soluble epoxide hydrolase:a next-generation drug target for Alzheimer's disease and related dementias

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Neural Regeneration Research 2025年第9期20卷 2585-2586页

作者： Andrew Gregory Chengyun Tang fan fan Department of Physiology Medical College of GeorgiaAugusta UniversityAugustaGAUSA

Alzheimer's disease(AD)and Alzheimer's diseaserelated dementias(ADRD)represent a significant public health challenge,with projections indicating a substantial increase in affected individuals due to the aging global *** the World Health Organization,AD/ADRD has affected more than 55 million individuals worldwide,with an additional 10 million cases diagnosed each year.

关键词： Alzheimer population drug

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斗篷山隧道平面控制测量技术总结

高速铁路技术 2012年第4期3卷 68-70页

作者：范朝忠刘涛中铁二局第四工程有限公司贵广铁路项目部都匀558003

根据长大隧道施工控制测量的建网理论,结合贵广铁路的长大隧道施工,从斗篷山隧道导线的布设、边角测设、数据平差处理等方面进行阐述,探讨控制测量精度及误差控制的方法,以及采用隧道二等导线测量及采用GPS组建隧道控制网进行测量控制... 详细信息

根据长大隧道施工控制测量的建网理论,结合贵广铁路的长大隧道施工,从斗篷山隧道导线的布设、边角测设、数据平差处理等方面进行阐述,探讨控制测量精度及误差控制的方法,以及采用隧道二等导线测量及采用GPS组建隧道控制网进行测量控制的方法,把贯通误差控制在15mm以内,确保了长大隧道按规范要求及精度顺利贯通,从而为施工生产的正常进行提供有效的保证。

关键词：高速铁路长大隧道控制测量

Chiral phosphoramidite ligand-modulated palladium auto-tandem catalysis for asymmetric dehydrogenative dienylation of imines with α-alkenes

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Science China Chemistry 2025年

作者： zhong-Sheng Nong Hao-fan Qian Ying-Chun Chen Pu-Sheng Wang Liu-Zhu Gong Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of China Key Laboratory of Drug Targeting and Drug Delivery System (Sichuan University) Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University School of Materials and Chemistry Southwest University of Science and Technology

The development of efficient processes allowing rapid access to complex chiral molecules from easily available alkenes is a long-term pursuit in the synthetic chemistry community. Transition metal-catalyzed asymmetric functionalization of allylic C–H bond represents a unique alternative toward this goal. However, enantioselective dehydrogenative transformation of olefins to value-added optically enriched molecules remains yet to be discovered. Here, we report a highly enantioselective dehydrogenative dienylation of imines with unactivated α-alkenes driven by the synergistic action of palladium complex and carboxylic acid. Chiral phosphoramidite ligands turned out to be superior in modulating the performance of palladium autotandem catalysis and allowed a broad range of α-alkenes and imines to be transformed into chiral dienylamines. Mechanistic studies suggest that the dienes could be in situ generated from α-alkenes through a palladium(0)-mediated dehydrogenative process in the presence of excess benzoquinone oxidants, and then participated in the Pd-chiral phosphoramidite-catalyzed intermolecular vinylogous-type addition to the imines activated by the carboxylic acid co-catalyst. Notably, the second β-H elimination occurring in the dienylation event might be the turnover-limiting step.

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Reconstructing forest and grassland cover changes in China over the past millennium

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Science China Earth Sciences 2025年第1期68卷 94-110页

作者： fanneng HE fan YANG Yafei WANG Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Key Research Institute of Yellow River Civilization and Sustainable Development Henan University University of Chinese Academy of Sciences

Historical forest and grassland cover changes not only are critical indicators for quantifying ecological and environmental change processes but also serve as fundamental data for long-term climate change simulations and terrestrial ecosystem carbon emission assessments. However, because of limitations in historical data, quantitative estimations and spatially gridded reconstructions of these changes remain challenging, necessitating further methodological exploration. This study focused on China's present-day land area over the past millennium, objectively capturing the characteristics and drivers of forest and grassland cover changes. On this basis, using the forest transition theory and the space-for-time substitution method, we depicted the historical deforestation process as an inverted “S” curve and developed a model to reconstruct historical forest area changes based on the functional relationship between the forest area and population size dynamics. Subsequently, a gridded forest allocation model was established on the basis of deforestation tendencies. For the grassland cover, we implemented regionspecific methods, such as the cropland area deduction method and the habitat constraint method, to quantitatively reconstruct historical changes. Consequently, we obtained provincial forest and grassland area changes over the past millennium and mapped 10-km-resolution gridded data of forest and grassland cover. The results indicated the following.(1) The methods developed using population data as a proxy objectively reproduced the spatiotemporal evolution of forest and grassland cover in China over the past millennium. These feasible methods offer a novel pathway for the quantitative reconstruction of historical forest and grassland cover changes.(2) The data indicated that China's forest area generally decreased over the past millennium, characterized by a “decrease-then-increase” pattern. The forest area experienced three distinct phases: a slow decline(AD 1000

关键词： Land use and land cover change Forest Grassland Quantitative reconstruction Gridded reconstruction China historical period

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微纳加工技术在光电子领域的应用

物理 2006年第1期35卷 51-55页

作者：韩伟华樊中朝杨富华中国科学院半导体研究所半导体集成技术工程研究中心北京100083

纳米光电子器件正在成为下一代光电子器件的核心.文章介绍了电子束光刻和电感耦合等离子体刻蚀为代表的微纳加工技术在光电子学器件中的应用,主要包括量子点激光器、量子点THz探测器和光子晶体器件.

关键词：纳米光电子器件电子束光刻电感耦合等离子体刻蚀量子点器件光子晶体