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Measuring Zak phase in room-temperature atoms

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Light(Science & Applications) 2022年第10期11卷 2530-2539页

作者： Ruosong Mao Xingqi Xu jiefei wang Chenran Xu Gewei Qian Han Cai Shi-Yao Zhu Da-Wei wang Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentationand Zhejiang Province Key Laboratory of Quantum Technology and DeviceSchool of PhysicsZhejiang UniversityHangzhou 310027China College of Optical Science and Engineering Zhejiang UniversityHangzhou 310027China Hefei National Laboratory Hefei 230088China CAS Center of Excellence in Topological Quantum Computation 100190 BeijingChina

Cold atoms provide a flexible platform for synthesizing and characterizing topological matter,where geometric phases play a central ***,cold atoms are intrinsically prone to thermal noise,which can overwhelm the topological response and hamper promised *** the other hand,geometric phases also determine the energy spectra of particles subjected to a static force,based on the polarization relation between Wannier-Stark ladders and geometric Zak *** exploiting this relation,we develop a method to extract geometric phases from energy spectra of room-temperature superradiance lattices,which are momentum-space lattices of timed Dicke *** such momentum-space lattices the thermal motion of atoms,instead of being a source of noise,provides effective forces which lead to spectroscopic signatures of the Zak *** measure Zak phases directly from the anti-crossings between Wannier-Stark ladders in the Doppler-broadened absorption spectra of superradiance *** approach paves the way of measuring topological invariants and developing their applications in room-temperature atoms.

关键词： topological momentum invariants

Co-assembly of FeTPP@Fe_(3)O_(4) nanoparticles with photo-enhanced catalytic activity for synergistic tumor therapy

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Nano Research 2022年第10期15卷 9114-9124页

作者： Tian Tian Jianshuai Bao Jinghan wang jiefei wang Yan Ge Zengyin Li Shanqing Gao Zhongqi You Xiaoyan Yang Yong Zhong Feng Bai Key Laboratory for Special Functional Materials of Ministry of Education National&Local Joint Engineering Research Center for High-efficiency Display and Lighting TechnologySchool of Materials Science and EngineeringCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Henan-Macquarie University Joint Centre for Biomedical Innovation School of Life SciencesHenan UniversityKaifeng 475004China

Chemodynamic therapy(CDT)offers a promising alternative to conventional cancer ***,the limited acidity and H_(2)O_(2) concentration in tumor microenvironment(TME)severely impair the anticancer effects of *** this study,we report a microemulsion-assisted coassembly method to prepare iron(III)tetraphenylporphyrin(FeTPP)and magnetic(Fe_(3)O_(4))nanocomposite material(FeTPP@Fe_(3)O_(4)),using photoactive FeTPP and Fe_(3)O_(4) nanocrystals as building *** selfassembling nature of FeTPP results in disordered aggregation and fluorescence quenching,leading to a high light-to-heat conversion ***,the photo-thermal effect enhances the catalytic decomposition of hydrogen peroxide(H_(2)O_(2))in the Fenton reaction on Fe_(3)O_(4) nanocrystals to generate highly toxic hydroxyl radicals(·OH)to destroy cancer *** cascade reaction produces a synergistic therapeutic effect between CDT and photothermal therapy(PTT),which significantly amplifies the therapeutic effect and enhances the treatment outcome of cancer *** highly efficient tumor catalytic therapy in vivo results confirmed that this nanomedicine treatment is an excellent biocompatible catalytic nanomedicine therapy achieved through a photo-enhanced Fenton reaction activity approach.

关键词： porphyrin photo-enhanced nanocatalyst synergistic therapy

Protein-protein interaction analysis in crude bacterial lysates using combinational method of ^19F site-specific incorporation and ^19F NMR

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Protein & Cell 2017年第2期8卷 149-154页

作者： Dong Li Yanan Zhang Yao He Chengwei Zhang jiefei wang Ying Xiong Longhua Zhang Yangzhong Liu Pan Shi Changlin Tian Hefei National Laboratory for Physical Science at the Microscale School of Life Science University of Science and Technology of China Hefei 230026 Anhui China School of Chemistry University of Science and Technology of China Hefei 230026 Anhui China

Protein-protein interactions （PPI） are essential for a variety of cellular functions. Many PPI analyses were conducted in vitro, using purified proteins. In this report, the unnatural amino acid tfmF was site-specifically incorporated into several different sites of two Phox-Beml （PB1） domains from two mitogen activated protein kinases （MEKK3 and/ or MEK5） in the E. coil cells.

关键词： bacterial interaction Protein-protein

Unique Cd1-xZnxS@WO3-x and Cd1-xZnxS@WO3-x/CoOx/NiOx Z-scheme photocatalysts for efficient visible-light-induced H2 evolution

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Science China Materials 2020年第1期63卷 75-90页

作者： Yanyan Li Qinqin Ruan Haifeng Lin Yanling Geng jiefei wang Hui wang Yu Yang Lei wang Key Laboratory of Eco-Chemical Engineering Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and TechnologyKey Laboratory of Rubber-Plastics of Ministry of EducationShandong Provincial Key Laboratory of Rubber-PlasticsCollege of Chemistry and Molecular EngineeringSchool of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao 266042China

Artificial Z-scheme photocatalytic systems have received considerable attention in recent years because they can achieve wide light-absorption, high charge-separation efficiency, and strong redox ability simultaneously. Nevertheless, it is still challenging to exploit low-cost and stable Zscheme photocatalysts with highly-efficient H2 evolution from solar water-splitting so far. Herein, we report a novel all-solidstate Z-scheme photocatalyst Cd1-xZnxS@WO3-x consisting of Cd1-xZnxS nanorods coated with oxygen-deficient WO3-x amorphous layers. The Cd1-xZnxS@WO3-x exhibits an outstanding H2 evolution reaction(HER) activity as compared with Pt-loaded Cd1-xZnxS and most WO3- and Cd S-based photocatalysts, due to the generation of stronger reducing electrons through the appropriate Zn-doping in Cd1-xZnxS and the enhanced charge transfer by introducing oxygen vacancies(W^5+/OVs) into the ultrathin WO3-x amorphous coatings. The optimal HER rate of Cd1-xZnxS@WO3- xis determined to be 21.68 mmol h^-1 g^-1, which is further raised up to 28.25 mmol h^-1 g^-1(about 12 times more than that of Pt/Cd1-xZnxS) when Cd1-xZnxS@WO3-x is hybridized by Co Ox and Ni Oxdual cocatalysts(Cd1-xZnxS@WO3-x/CoOx/NiOx)through in-situ photo-deposition. Moreover, the corresponding apparent quantum yield(AQY) at 420 nm is significantly increased from 34.6% for Cd1-xZnxS@WO3-x to 60.8% for Cd1-xZnxS@WO3-x/CoOx/NiOx. In addition, both Cd1-xZnxS@WO3-x and Cd1-xZnxS@WO3-x/CoOx/NiOx demonstrate good stability towards HER. The results displayed in this work will inspire the rational design and synthesis of high-performance nanostructures for photocatalytic applications.

关键词： Z-scheme charge transfer photocatalytic H2 evolution,Cd1−xZnxS solid solutions oxygen-deficient WO3−x amor-phous layers CoOx and NiOx dual cocatalysts

游泳联合早期抚触在新生儿神经系统发育迟缓护理中的应用

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临床研究 2025年第1期33卷 151-153页

作者：张新丽韩芳王洁翡郑州市妇幼保健院秦岭院区急诊医学科河南郑州450000 郑州市妇幼保健院产房河南郑州450000

目的探讨游泳联合早期抚触在新生儿神经系统发育迟缓护理中的应用效果。方法选取2020年3月至2022年6月郑州市妇幼保健院秦岭院区收治的108例神经系统发育迟缓新生儿,以随机数字表法分成干预组(n=54)与对照组(n=54),干预组采用游泳联合... 详细信息

目的探讨游泳联合早期抚触在新生儿神经系统发育迟缓护理中的应用效果。方法选取2020年3月至2022年6月郑州市妇幼保健院秦岭院区收治的108例神经系统发育迟缓新生儿,以随机数字表法分成干预组(n=54)与对照组(n=54),干预组采用游泳联合早期抚触护理,对照组采用常规新生儿护理,两组均干预3个月,比较两组干预前、干预后神经行为情况、生长发育情况、智力发育情况。结果两组干预后新生儿神经行为测定(NBNA)评分均提高,且干预组评分高于对照组,差异有统计学意义(P<0.05);两组干预后头围、身长、体重均升高,且干预组高于对照组,差异有统计学意义(P<0.05);干预后两组智力发展指数(MDI)评分均提高,且干预组高于对照组,差异有统计学意义(P<0.05)。结论游泳联合早期抚触干预应用于神经系统发育迟缓新生儿中能够改善新生儿神经行为,促进其生长发育和智能发育。

关键词：游泳早期抚触新生儿神经系统发育迟缓

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次世代数字交互式城市电影的美学嬗变

当代电影 2014年第11期 179-182页

作者：王杰飞鲁东大学文学院讲师264025

随着科学技术的高速发展,次世代数字技术越发广泛和深入地介入电影创作,不断催生出电影的新形态,拓展了电影艺术的表现空间。以交互性和非线性叙事为主要特征的"数字交互式电影",将成为未来城市电影发展的新方向,这种数字交互式城市电... 详细信息

随着科学技术的高速发展,次世代数字技术越发广泛和深入地介入电影创作,不断催生出电影的新形态,拓展了电影艺术的表现空间。以交互性和非线性叙事为主要特征的"数字交互式电影",将成为未来城市电影发展的新方向,这种数字交互式城市电影带来了全新的城市文化景观,将对传统城市电影美学带来巨大变革,也将改变人们的审美思维和审美情趣。次世代数字交互式城市电影的美学嬗变为城市电影的发展提供新的视角和空间,探讨这些变化,有助于更好地实现其美学意义。

关键词：城市电影次世代数字交互技术美学美学嬗变

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Cooperative Zinc oxide fullerene electron selective layers for planar perovskite solar cells

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Cooperative Zinc oxide fullerene electron selective layers f...

High-Performance Perovskite Solar Cells Based on a Solution-Processed Tin Oxide Electron-Transporting Layer

第四届新型太阳能电池学术研讨会

作者： jiefei wang Hao Gu Xiaotao Liu Yiqiang Zhang State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM) Zhengzhou University

Perovskite solar cells(PSCs) are awesome compared to silicon solar cells due to their low cost and easy *** report that ZnO and fullerenes can work cooperatively to further boost the performance of perovskite solar *** find that fullerenes can be redissolved during perovskite deposition, allowing ultra-thin fullerenes to be retained at the interface and some dissolved fullerenes infiltrate into perovskite grain *** ZnO layer blocks holes effectively;whereas, the fullerenes promote electron transfer and passivate both the ZnO/perovskite interface and perovskite grain *** find that the partial dissolving of fullerenes during perovskite deposition is the key for fabricating high-performance perovskite solar cells based on metal oxide/fullerene electron selective layers(ESLs).

关键词： perovskite solar cells ZnO election selective layers

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High-Performance Perovskite Solar Cells Based on a Solution-...

第四届新型太阳能电池学术研讨会

作者： Gu Hao Liu Xiaotao wang jiefei Zhang,Yiqiang State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM) Zhengzhou University

Recently, Perovskite solar cells(PSCs) are one of the most promising lab-scale technologies to deliver inexpensive solar ***-temperature planar PSCs are particularly suited for large-scale ***, we propose a simple, solution-processed technological approach for depositing SnO *** use of these layers in planar PSCs yields a high stabilized power conversion efficiency close to 13% with no obvious *** all layers of the PSCs were fabricated at low *** approach represents an advancement in the understanding of the role of electron selective layers on the efficiency and stability of ***, the newly proposed approach constitutes a simple, scalable method paving the way for industrialization of perovskite solar cells.

关键词： Solution-processed SnO2 film Perovskite solar cells

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收入差距、努力指数与居民主观幸福感

南开经济研究 2022年第4期 3-21页

作者：王洁菲姚树洁湖南工商大学经济与贸易学院 410000 辽宁大学李安民经济研究院 110036 重庆大学经济与工商管理学院 400044

本文基于2018年中国家庭追踪调查数据(CFPS),运用Ordered Probit、IV Probit、2SLS和OLS模型研究收入差距、收入差距主观评价对居民主观幸福感的影响,通过构造努力指数探讨了收入差距主要来源之一的努力因素对居民幸福感的影响。其结果... 详细信息

本文基于2018年中国家庭追踪调查数据(CFPS),运用Ordered Probit、IV Probit、2SLS和OLS模型研究收入差距、收入差距主观评价对居民主观幸福感的影响,通过构造努力指数探讨了收入差距主要来源之一的努力因素对居民幸福感的影响。其结果表明:(1)社会客观收入差距越高、居民对社会收入差距主观评价越高,居民主观幸福感越低。(2)收入差距扩大会损害城乡居民主观幸福感,城市居民对收入差距的主观评价会通过“负向预期”作用机制削弱其对未来生活的信心,损害当下幸福感。(3)努力指数对城乡、不同收入阶层居民主观幸福感的影响存在异质性。努力指数对最低收入组居民的主观幸福感影响不显著,一是因为受教育程度较低、劳动技能不足等原因,努力程度的提高并不能有效提高这类居民收入水平;二是对于部分努力程度较低的最低收入居民来说,政府转移支付可以在一定程度上抵消没有劳动报酬所产生的负幸福效应。

关键词：收入差距收入差距主观评价主观幸福感努力程度 “扶志”困境