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Electronic structure engineering of single atomic sites by plasmoninduced hot electrons for highly efficient and selective photocatalysis

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Nano Research 2024年第8期17卷 6960-6967页

作者： Xiaoya Huang Xinyuan Li Akang Chen Hongfei Gu Shouyuan Li Tailei Hou shuwen zhu Shuang Yu Yin Song Jiatao Zhang Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications MIIT Key Laboratory of Medical Molecule Science and Pharmaceutical EngineeringMOE Key Laboratory of Cluster ScienceSchool of Chemistry and Chemical EngineeringSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China MIIT Key Laboratory of Complex-field Intelligent Exploration School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Single atom(SA)catalysts have achieved great success on highly selective heterogeneous catalysis due to their abundant and homogeneous active *** electronic structures of these active sites,restrained by their localized coordination environments,significantly determine their catalytic performances,which are difficult to ***,we investigated the effect of localized surface plasmon resonance(LSPR)on engineering the electronic structures of single atomic ***,core–shell structures consisted of Au core and transition metal SAs loaded N-doped carbon(CN)shell were constructed,namely Au@M-SA/CN(M=Ni,Fe,and Co).It was demonstrated that plasmon-induced hot electrons originated from Au were directionally injected to the M-SAs under visible light irradiation,which significantly changed their electronic structures and meanwhile facilitated improved overall charge separation *** as-prepared Au@Ni-SA/CN exhibited highly efficient and selective photocatalytic CO_(2) reduction to CO performance,which is 20.8,17.5,and 6.9 times those of Au nanoparticles,Au@CN,and Ni-SA/CN,*** spectroscopy analysis and theoretical calculations confirmed that the plasmon enhanced Ni-SA/CN sites featured increased charge density for efficient intermediate activation,contributing to the superb photocatalytic *** work provides a new insight on plasmon and atomic site engineering for efficient and selective catalysis.

关键词： single atom catalysts plasmon enhancement coupling effect photocatalysis CO_(2) reduction

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Robust asymmetric Cherenkov radiation in tilted anisotropic medium

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 46-51页

作者： shuwen Xue Yadong Xu Linkang Han Zhi Ning Chen Qiaoliang Bao Shan zhu Huanyang Chen Institute of Electromagnetics and Acoustics and Department of Physics College of Physical Science and TechnologyJiujiang Research InstituteXiamen UniversityXiamen 361005China School of Physical Science and Technology Institute of Theoretical and Applied PhysicsSoochow UniversitySuzhou 215006China Department of Electrical and Computer Engineering National University of SingaporeSingapore 8117583Singapore Institute of Energy Materials Science(IEMS) University of Shanghai for Science and TechnologyShanghai 200093China

Cherenkov radiation(CR)is available for a wide variety of terahertz(THz)radiation sources,but its efficiency is deeply affected by intrinsic *** find that if the tilted angle(α)of anisotropic material and radiation angle(θ)meet the condition ofθ+α=π/2,the intensity of radiation fields for the charged particle bunch(CPB)moving from left to right cannot be influenced by intrinsic losses,which means long-distance radiation can be ***,we observe an asymmetric CR when the CPB moves from the opposite *** addition,we select natural van der Waals(vd W)materialα-MoO3as an example,further confirming that the radiation field can reach the far field and the asymmetric CR radiation can also be *** wonderful properties with long-distance radiation will extend the application of CR to a certain extent for future design and fabrication.

关键词： asymmetric Cherenkov radiation intrinsic losses long-distance radiation

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Label-free biosensing with singular-phaseenhanced lateral position shift based on atomically thin plasmonic nanomaterials

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Light(Science & Applications) 2024年第5期13卷 810-822页

作者： Shaodi zhu Rodolphe Jaffiol Aurelian Crunteanu Cyrille Vézy Sik-To Chan Wu Yuan Ho-Pui Ho shuwen Zeng Light Nanomaterials&Nanotechnologies(L2n)CNRS-EMR 7004University of Technology of Troyes10000 TroyesFrance. Department of Biomedical Engineering The Chinese University of Hong KongShatinNew TerritoriesHong KongChina XLIM Research Institute UMR 7252 CNRS/University of Limoges123Avenue Albert ThomasLimogesFrance

Rapid plasmonic biosensing has attracted wide attention in early disease diagnosis and molecular biology ***,it was still challenging for conventional angle-interrogating plasmonic sensors to obtain higher sensitivity without secondary amplifying labels such as plasmonic *** address this issue,we developed a plasmonic biosensor based on the enhanced lateral position shift by phase *** singularity presents as a sudden phase retardation at the dark point of reflection from resonating plasmonic substrate,leading to a giant position shift on reflected ***,for the first time,the atomically thin layer of Ge2Sb2Te5(GST)on silver nanofilm was demonstrated as a novel phase-response-enhancing plasmonic *** GST layer was not only precisely engineered to singularize phase change but also served as a protective layer for active silver *** new configuration has achieved a record-breaking largest position shift of 439.3μm measured in calibration experiments with an ultra-high sensitivity of 1.72×10^(8)nm RIU−1(refractive index unit).The detection limit was determined to be 6.97×10^(−7)RIU with a 0.12μm position ***,a large figure of merit(FOM)of 4.54×10^(11)μm(RIU∙°)^(−1)was evaluated for such position shift interrogation,enabling the labelfree detection of trace amounts of *** targeted biosensing experiments,the optimized sensor has successfully detected small cytokine biomarkers(TNF-αand IL-6)with the lowest concentration of 1×10^(−16)*** two molecules are the key proinflammatory cancer markers in clinical diagnosis,which cannot be directly screened by current clinical *** further validate the selectivity of our sensing systems,we also measured the affinity of integrin binding to arginylglycylaspartic acid(RGD)peptide(a key protein interaction in cell adhesion)with different Mn2+ion concentrations,ranging from 1 nM to 1 mM.

关键词： diagnosis protective silver

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Notch signaling pathway in cancer:from mechanistic insights to targeted therapies

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Signal Transduction and Targeted Therapy 2024年第6期9卷 2527-2563页

作者： Qingmiao Shi Chen Xue Yifan Zeng Xin Yuan Qingfei Chu shuwen Jiang Jinzhi Wang Yaqi Zhang Danhua zhu Lanjuan Li State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesNational Medical Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China

Notch signaling,renowned for its role in regulating cell fate,organ development,and tissue homeostasis across metazoans,is highly conserved throughout *** Notch receptor and its ligands are transmembrane proteins containing epidermal growth factor-like repeat sequences,typically necessitating receptor-ligand interaction to initiate classical Notch signaling *** evidence indicates that the Notch signaling pathway serves as both an oncogenic factor and a tumor suppressor in various cancer *** of this pathway promotes epithelial-mesenchymal transition and angiogenesis in malignancies,closely linked to cancer proliferation,invasion,and ***,the Notch signaling pathway contributes to maintaining stem-like properties in cancer cells,thereby enhancing cancer *** regulatory role of the Notch signaling pathway in cancer metabolic reprogramming and the tumor microenvironment suggests its pivotal involvement in balancing oncogenic and tumor suppressive ***,the Notch signaling pathway is implicated in conferring chemoresistance to tumor ***,a comprehensive understanding of these biological processes is crucial for developing innovative therapeutic strategies targeting Notch *** review focuses on the research progress of the Notch signaling pathway in cancers,providing in-depth insights into the potential mechanisms of Notch signaling regulation in the occurrence and progression of ***,the review summarizes pharmaceutical clinical trials targeting Notch signaling for cancer therapy,aiming to offer new insights into therapeutic strategies for human malignancies.

关键词： Notch invasion involvement

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装配式钢结构建筑工程施工监理控制要点

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建设监理 2019年第7期 85-86页

作者：朱书文上海新建设工程咨询有限公司上海200123

简述了装配式钢结构体系的特点,概括了做好装配式钢结构建筑工程监理工作的前提,总结出装配式钢结构体系工程施工过程中监理质量控制要点。为今后类似的装配式钢结构建筑工程提供施工监理经验。

关键词：装配式建筑钢结构监理质量控制

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Single-cell transcriptomic Atlas of aging macaque ocular outflow tissues

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Protein & Cell 2024年第8期15卷 594-611页

作者： Jian Wu Chaoye Wang Shuhui Sun Tianmin Ren Lijie Pan Hongyi Liu Simeng Hou Shen Wu Xuejing Yan Jingxue Zhang Xiaofang Zhao Weihai Liu Sirui zhu shuwen Wei Chi Zhang Xu Jia Qi Zhang Ziyu Yu Yehong zhuo Qi Zhao Chenlong Yang Ningli Wang Beijing Institute of Ophthalmology Beijing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing Key Laboratory of Ophthalmology and Visual SciencesBeijing 100730China State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510060China State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer MedicineSun Yat-sen University Cancer CenterGuangzhou 510060China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Department of Neurosurgery Peking University Third HospitalCenter for Precision Neurosurgery and Oncology of Peking University Health Science CenterBeijing 100191China Spencer Center for Vision Research Byers Eye InstituteSchool of MedicineStanford UniversityPalo AltoCA 94304USA

The progressive degradation in the trabecular meshwork(TM)is related to age-related ocular diseases like primary open-angle ***,the molecular basis and biological significance of the aging process in TM have not been fully ***,we established a dynamic single-cell transcriptomic landscape of aged macaque TM,wherein we classified the outflow tissue into 12 cell subtypes and identified mitochondrial dysfunction as a prominent feature of TM ***,we divided TM cells into 13 clusters and performed an in-depth analysis on cluster O,which had the highest aging score and the most significant changes in cell proportions between the two ***,we found that the APOE gene was an important differentially expressed gene in cluster O during the aging process,highlighting the close relationship between cell migration and extracellular matrix regulation,and TM *** work further demonstrated that silencing the APOE gene could increase migration and reduce apoptosis by releasing the inhibition on the PI3K-AKT pathway and downregulating the expression of extracellular matrix components,thereby increasing the aqueous outflow rate and maintaining intraocular pressure within the normal *** work provides valuable insights for future clinical diagnosis and treatment of glaucoma.

关键词： single-cell transcriptomic atlas macaque trabecular meshwork ocular outflow tissue aging

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第三方验证下的基于无线信道特征的密钥提取

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智能计算机与应用 2019年第2期9卷 108-111页

作者：丁佳蓉朱淑文上海工程技术大学电子电气工程学院上海201620

随着可穿戴设备的应用越来越广泛,基于体域网医疗监测的数据隐私保护工作日益突出。基于信道特征的密钥提取,可以消除复杂的密钥分发过程和计算开销,但是现有的工作不能有效防止合谋攻击且量化后的密钥传输易受到合谋攻击。为此引入第... 详细信息

随着可穿戴设备的应用越来越广泛,基于体域网医疗监测的数据隐私保护工作日益突出。基于信道特征的密钥提取,可以消除复杂的密钥分发过程和计算开销,但是现有的工作不能有效防止合谋攻击且量化后的密钥传输易受到合谋攻击。为此引入第三方可信机构Victor来对体域网通信双方Alice和Bob进行密钥的校验和分发,不仅可以防止合谋攻击,还承担了信息协调的工作,减少了一部分Alice和Bob的能源消耗。此外,利用矩形帧结构对量化后的密钥进行处理,便于对密钥运行ShiftRows和ColumnMix运算,从而保证了量化后的密钥传输的安全性,有效阻止了中间人的攻击。

关键词：体域网信道特征合谋攻击密钥提取可穿戴传感器安全通信

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林业碳汇信贷融资现实困境、制约因素与模式创新

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中国人口·资源与环境 2024年第3期34卷 68-78页

作者：秦涛王姗邓树文朱然北京林业大学经济管理学院北京100083

林业碳汇信贷融资作为林业碳汇价值实现的主要路径,对于盘活林业碳汇资源、提升碳汇资产价值,以及缓解碳汇经营企业融资约束具有重要价值。目前,中国部分地区已探索试点林业碳汇质押融资业务,但面临现有模式难以复制推广的现实困境。该... 详细信息

林业碳汇信贷融资作为林业碳汇价值实现的主要路径,对于盘活林业碳汇资源、提升碳汇资产价值,以及缓解碳汇经营企业融资约束具有重要价值。目前,中国部分地区已探索试点林业碳汇质押融资业务,但面临现有模式难以复制推广的现实困境。该研究通过剖析典型案例的融资模式和现存不足,深入分析林业碳汇信贷融资当下面临的现实问题,探究影响林业碳汇发挥质押作用的根本原因。研究发现:①林业碳汇法律属性不明确,质权设立过程中涉及的相关权益变动缺乏法理依据。②林业碳汇价值评估标准缺失,质押价值评估结果银行难以认定。③林业碳汇资产质权难以处置变现,质权实现路径缺失导致银行无法有效控制信贷违约风险。因此,该研究通过引入林业碳汇保险的保单质押、价值认定和金融增信功能,以及碳汇收储机制在质权实现方面的担保增信作用,创新性地提出“林权抵押附加林业碳汇(预期收益权)质押+碳汇价值综合保险+林权(碳汇)收储担保”“林业碳汇(预期收益权)价值保险保单质押+碳汇收储担保”和“林业碳汇资产质押+碳汇价格指数保险”三种林业碳汇信贷融资模式,为林业碳汇质押融资广泛开展提供可行路径。最后,针对林业碳汇信贷融资的制约因素,从完善碳汇相关配套政策、统一碳汇价值评估标准、优化创新碳汇保险产品、建立碳汇收储担保制度、构建林业碳汇金融支持体系五个方面,提出促进林业碳汇信贷融资有效开展的具体策略建议。

关键词：林业碳汇信贷质押担保保险融资

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无线医疗传感网的匿名双向身份认证研究

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单片机与嵌入式系统应用 2017年第12期17卷 16-19页

作者：丁邢涛钟伯成朱淑文上海工程技术大学电子电气工程学院上海201620

针对无线医疗传感网系统中通信实体身份问题,提出了一种双向身份认证方案,包括初始化、用户注册、身份认证和机密信息及口令更新4个阶段。该方案实现了用户、医疗传感节点和个人服务器三者之间的双向身份认证,保证用户匿名性的同时能够... 详细信息

针对无线医疗传感网系统中通信实体身份问题,提出了一种双向身份认证方案,包括初始化、用户注册、身份认证和机密信息及口令更新4个阶段。该方案实现了用户、医疗传感节点和个人服务器三者之间的双向身份认证,保证用户匿名性的同时能够抵御多种攻击。与现有的两种认证方案相比,降低了时间复杂度,同时具有更高的安全性,适用于无线医疗传感网。

关键词：无线医疗传感网安全隐私身份认证

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隐蔽图像后门攻击

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中国图象图形学报 2023年第3期28卷 864-877页

作者：朱淑雯罗戈韦平李晟张新鹏钱振兴复旦大学计算机科学技术学院上海200433

目的图像后门攻击是一种经典的对抗性攻击形式,后门攻击使被攻击的深度模型在正常情况下表现良好,而当隐藏的后门被预设的触发器激活时就会出现恶性结果。现有的后门攻击开始转向为有毒样本分配干净标签或在有毒数据中隐蔽触发器以对抗... 详细信息

目的图像后门攻击是一种经典的对抗性攻击形式,后门攻击使被攻击的深度模型在正常情况下表现良好,而当隐藏的后门被预设的触发器激活时就会出现恶性结果。现有的后门攻击开始转向为有毒样本分配干净标签或在有毒数据中隐蔽触发器以对抗人类检查,但这些方法在视觉监督下很难同时具备这两种安全特性,并且它们的触发器可以很容易地通过统计分析检测出来。因此,提出了一种隐蔽有效的图像后门攻击方法。方法首先通过信息隐藏技术隐蔽图像后门触发,使标签正确的中毒图像样本(标签不可感知性)和相应的干净图像样本看起来几乎相同(图像不可感知性)。其次,设计了一种全新的后门攻击范式,其中毒的源图像类别同时也是目标类。提出的后门攻击方法不仅视觉上是隐蔽的,同时能抵御经典的后门防御方法(统计不可感知性)。结果为了验证方法的有效性与隐蔽性,在ImageN et、MNIST、CIFAR-10数据集上与其他3种方法进行了对比实验。实验结果表明,在3个数据集上,原始干净样本分类准确率下降均不到1%,中毒样本分类准确率都超过94%,并具备最好的图像视觉效果。另外,验证了所提出的触发器临时注入的任意图像样本都可以发起有效的后门攻击。结论所提出的后门攻击方法具备干净标签、触发不可感知、统计不可感知等安全特性,更难被人类察觉和统计方法检测。

关键词：后门攻击隐蔽触发攻击范式干净标签统计隐蔽

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