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Nano Research 2024年第8期17卷 7027-7038页

作者： Wenan Cai Yuichiro Tanaka xing zhu Teruhisa Ohno Department of Applied Chemistry Faculty of EngineeringKyushu Institute of TechnologyKitakyushu 804-8550Japan College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&TechnologyXi’an 710021China

Polymer carbon nitride(PCN)is widely used in ***,pristine PCN has disadvantages such as insufficient visible light absorption and low photogenerated carrier separation efficiency that greatly limited the photocatalytic *** a non-toxic metal,gallium has the potential to solve the defects of *** ions coordinated with nitrogen in carbon nitride to form Ga-N active sites and improved the photocatalytic *** doped potassium ions form a transmission channel for charge redistribution and transfer between adjacent layers,which is beneficial for better separation of photoexcited *** this study,a series of PCN co-doped with gallium and potassium(Ga-K-PCN)were *** experimental results indicated photocatalytic generation of hydrogen peroxide proceeds through the 2e−oxygen reduction reaction ***,Nyquist plots and photocurrent results further proved that the presence of Ga-N sites and potassium ion doping could significantly improve the separation/transfer of intra-planar and interlayer charge carriers and thus enhance photocatalytic *** Ga10-K3-PCN photocatalysts promoted yield of H_(2)O_(2),with reactivity at 28.2μmol/(g·h)and solar-to-chemical conversion efficiency at 0.64%,surpassed that of a typical photo-catalyst based on PCN(0.18%).

关键词： photocatalysis gallium oxygen reduction reaction H_(2)O_(2) production

A historical overview of nano-optics:From near-field optics to plasmonics

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Chinese Physics B 2024年第5期33卷 134-145页

作者：邓妙怡朱星 Department of History of Science Technology and MedicineAcademy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China School of Physics Peking UniversityBeijing 100871China

Nano-optics is an emergent research field in physics that appeared in the 1980s,which deals with light–matter optical interactions at the nanometer *** early studies of nano-optics,the main concern focus is to obtain higher optical resolution over the diffraction *** researches of near-field imaging and spectroscopy based on scanning near-field optical microscopy(SNOM)are *** exploration of improving SNOM probe for near-field detection leads to the emergence of surface *** the sense of resolution and wider application,there has been a significant transition from seeking higher resolution microscopy to plasmonic near-field modulations in the nano-optics community during the nano-optic ***,studies of nano-optics prefer the investigation of plasmonics in different material *** this article,the history of the development of near-field optics is briefly *** difficulties of conventional SNOM to achieve higher resolution are *** an alternative solution,surface plasmons have shown the advantages of higher resolution,wider application,and flexible nano-optical modulation for new *** typical studies in different periods are introduced and characteristics of nano-optics in each stage are *** this way,the evolution progress from near-field optics to plasmonics of nano-optics research is *** future development of nano-optics is discussed then.

关键词： nano-optics near-field optics surface plasmon plasmonic modulation

Angular distribution of products in multinucleon transfer reactions

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Chinese Physics C 2024年第10期48卷 193-200页

作者： Xian-Kai Le Kuan Fan Feng-zhu xing Shu-Qing Guo Nan Wang College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Nuclear and Radiation Safety Shenzhen 518060China

A method based on the dinuclear system(DNS)is proposed to describe the angular distribution of products in multinucleon transfer(MNT)*** considering fluctuation effects,the angular distributions of reactions involving^(136)Xe+^(208)Pb,^(136)Xe+^(209)Bi,^(86)Kr+^(166)Er,^(84)Kr+^(209)Bi,and^(84)Kr+^(208)Pb are examined,demonstrating good agreement with experimental ***,the double differential cross-sections(dσ^(2)/dl_(i)dΘand dσ^(2)/dZdΘ)of reactions^(136)Xe+^(208)Pb and^(136)Xe+^(209)Bi are analyzed to explore the mechanism of angular distribution in MNT ***,the optimal angles for detecting N=126 isotopes are determined via an analysis on the influence of proton and neutron numbers of the projectiles on the angular distribution of the N=126 isotopic *** results of this study can provide valuable insights for experimental detection.

关键词： angular distribution multinucleon transfer reaction dinuclear system model neutron-rich nuclei

Remote entangling gate between a quantum dot spin and a transmon qubit mediated by microwave photons

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Chinese Physics B 2024年第2期33卷 52-59页

作者：朱行宇朱乐天涂涛李传锋 Key Laboratory of Quantum Information Chinese Academy of SciencesUniversity of Science and Technology of ChinaHefei 230026China School of Mechanical and Electronic Engineering Suzhou UniversitySuzhou 234000China Hefei National Laboratory University of Science and Technology of ChinaChinese Academy of SciencesHefei 230088China

Spin qubits and superconducting qubits are promising candidates for realizing solid-state quantum information *** a hybrid architecture that combines the advantages of different qubits on the same chip is a highly desirable but challenging *** we propose a hybrid architecture that utilizes a high-impedance SQUID array resonator as a quantum bus,thereby coherently coupling different solid-state *** employ a resonant exchange spin qubit hosted in a triple quantum dot and a superconducting transmon *** this hybrid system is highly tunable,it can operate in a dispersive regime,where the interaction between the different qubits is mediated by virtual *** utilizing such interactions,entangling gate operations between different qubits can be realized in a short time of 30 ns with a fidelity of up to 96.5%under realistic parameter *** utilizing this interaction,remote entangled state between different qubits can be prepared and is robust to perturbations of various *** results pave the way for exploring efficient fault-tolerant quantum computation on hybrid quantum architecture platforms.

关键词： hybrid quantum architectures circuit quantum electrodynamics entangling gate

Predictive model for non-malignant portal vein thrombosis associated with cirrhosis based on inflammatory biomarkers

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1213-1226页

作者： Guo-Le Nie Jun Yan Ying Li Hong-Long Zhang Dan-Na Xie xing-Wang zhu Xun Li The First School of Clinical Medicine Lanzhou UniversityLanzhou 730000Gansu ProvinceChina Department of General Surgery The First Hospital of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina

BACKGROUND Portal vein thrombosis(PVT),a complication of liver cirrhosis,is a major public health *** prediction is the most effective method for PVT diagnosis and *** To develop and validate a nomogram and network calculator based on clinical indicators to predict PVT in patients with *** Patients with cirrhosis hospitalized between January 2016 and December 2021 at the First Hospital of Lanzhou University were screened and 643 patients with cirrhosis who met the eligibility criteria were *** a 1:1 propensity score matching 572 patients with cirrhosis were screened,and relevant clinical data were *** risk factors were identified using the least absolute shrinkage and selection operator(LASSO)and multivariate logistic regression *** inflation factors and correlation matrix plots were used to analyze multicollinearity among the variables.A nomogram was constructed to predict the probability of PVT based on independent risk factors for PVT,and its predictive performance was verified using a receiver operating characteristic curve(ROC),calibration curves,and decision curve analysis(DCA).Finally,a network calculator was constructed based on the *** This study enrolled 286 cirrhosis patients with PVT and 286 without *** analysis revealed 13 variables as strongly associated with PVT *** logistic regression analysis revealed nine indicators as independent PVT risk factors,including etiology,ascites,gastroesophageal varices,platelet count,D-dimer,portal vein diameter,portal vein velocity,aspartate transaminase to neutrophil ratio index,and platelet-to-lymphocyte *** and correlation matrix plot results revealed no significant multicollinearity or correlation among the variables.A nomogram was constructed based on the screened independent risk *** nomogram had excellent predictive performance,with an area under the ROC curve of 0.821 and 0.829 in the

关键词： Portal vein thrombosis Liver cirrhosis Nomogram Inflammatory markers Aspartate aminotransferase to neutrophil ratio index Platelet-to-lymphocyte ratio

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帕克斯脉冲星计时阵

物理 2024年第8期53卷 525-531页

作者：朱兴江北京师范大学文理学院珠海519087

2023年，国际上几个脉冲星计时阵团队同时独立宣布发现了纳赫兹引力波背景信号的证据。这预示着一扇全新的引力波天文学观测窗口即将打开。帕克斯脉冲星计时阵是第一个正式运行的脉冲星计时阵实验，在研发先进的脉冲星观测仪器和高效的... 详细信息

2023年，国际上几个脉冲星计时阵团队同时独立宣布发现了纳赫兹引力波背景信号的证据。这预示着一扇全新的引力波天文学观测窗口即将打开。帕克斯脉冲星计时阵是第一个正式运行的脉冲星计时阵实验，在研发先进的脉冲星观测仪器和高效的数据处理软件、发展脉冲星计时噪声分析和引力波搜寻方法等方面做出了开创引领性贡献。文章将介绍帕克斯脉冲星计时阵的发展历程、对领域的独特贡献和最新的研究成果。

关键词：帕克斯脉冲星计时阵纳赫兹引力波脉冲星计时噪声分析引力波搜寻

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基于网联车辆数据融合的路面平整度评估方法

中国公路学报 2024年第6期37卷 302-316页

作者：杜昭张文榕朱兴一同济大学交通运输工程学院上海201802

智能网联汽车的快速发展为道路基础设施服役性能的监测提供了更加便捷、高效的全新解决方案。为发挥智能网联车辆优势,提高车载响应类路面平整度检测的便捷性和准确性,首先提出了一种基于车辆振动响应信号的路面纵断面高程反演及平整度... 详细信息

智能网联汽车的快速发展为道路基础设施服役性能的监测提供了更加便捷、高效的全新解决方案。为发挥智能网联车辆优势,提高车载响应类路面平整度检测的便捷性和准确性,首先提出了一种基于车辆振动响应信号的路面纵断面高程反演及平整度估计方法,该方法通过对车辆垂向动力学的合理建模及模型参数辨识,以车身振动响应信号作为测量值,借助增广卡尔曼滤波算法,对路面断面高程进行反演估计,进而求解国际平整度指数。随后,采用高斯过程模型对多车估计结果进行拟合以实现多车结果的融合解析。考虑到智能网联汽车可实现车车互联通信的优势,进一步将前车融合结果纳入当前车辆估计算法,并将其作为伪测量量,实现多车协同估计以提高当前车辆估计结果的准确性。借助数值仿真及实测数据对前述方法进行验证,实测结果表明:所提出的单车估计方法所得国际平整度指数的估计值与实测值相关性可达87%,均方根误差约为0.26 m·km-1;多部车辆的重复性测试验证了该方法的准确性和可重复性;多车结果融合及协同估计策略不仅可降低单车估计结果的误差,且可在一定程度上提高单车估计算法的稳定性。在算法验证基础上,设计了一套可实现路面平整度在线评估的原型系统,并提出了智能网联环境下路面平整度评估框架,进而对该系统及框架进行了离线验证。基于该框架,不仅可实现路面平整度的单车在线估计,还可对多车感知结果进行融合,并将平台端融合结果用于终端计算中,实现云-端协同估计,从而提高终端反演的准确性和鲁棒性。

关键词：路面工程平整度评估方法反演分析卡尔曼滤波高斯过程路面断面高程数据融合

外电场作用下纳米结构表面的固-液界面传热特性

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物理学报 2024年第15期73卷 154-161页

作者：齐凯朱星光王军夏国栋北京工业大学传热强化与过程节能教育部重点实验室暨传热与能源利用北京市重点实验室北京100124

在固体表面布置纳米结构是一种强化固-液界面传热的简单有效的方法.但是,当固-液界面相互作用较弱时,由于纳米结构并不能被液体浸润,纳米结构的存在反而会弱化固-液界面之间的传热,而外电场的施加则可以解决这一问题.本文基于分子动力... 详细信息

在固体表面布置纳米结构是一种强化固-液界面传热的简单有效的方法.但是,当固-液界面相互作用较弱时,由于纳米结构并不能被液体浸润,纳米结构的存在反而会弱化固-液界面之间的传热,而外电场的施加则可以解决这一问题.本文基于分子动力学模拟的方法,研究了纳米结构固-液界面在外电场作用下的传热特性.通过在2块平行金属板布置数量相同的正负电荷,产生垂直于板面的均匀电场,并在下层金属板上布置了不同尺寸的纳米结构.结果表明:在外电场作用下,纳米结构处会产生电润湿现象,固-液界面的润湿状态能够从Cassie态变为Wenzel态,界面处的Kapitza热阻长度明显减小,因而热流密度显著增大;当电荷量增至发生电冻结的临界值,液态水会产生电冻结现象,其热导率骤增至1.2 W/(m·K),热流密度也随之发生骤增;继续增加电场强度,由于电冻结现象的发生,固-液界面热阻则基本保持不变.

关键词：电润湿纳米结构外电场固-液界面热阻分子动力学

循环加卸载过程中灰岩微细观损伤特征的试验研究

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岩土力学 2024年第3期45卷 685-696页

作者：刘汉香叶刁瑜别鹏飞朱星成都理工大学环境与土木工程学院四川成都610059 成都理工大学计算机与网络安全学院四川成都610059

岩石的动力学性质是影响岩质边坡地震动力稳定性的关键内因。地震产生的循环往复作用会造成岩石损伤和破坏,劣化岩石性能,降低岩质边坡的稳定性。为了深入研究岩石在动力荷载下的损伤特征,以某岩质斜坡出露的二叠系灰岩为研究对象,联合... 详细信息

岩石的动力学性质是影响岩质边坡地震动力稳定性的关键内因。地震产生的循环往复作用会造成岩石损伤和破坏,劣化岩石性能,降低岩质边坡的稳定性。为了深入研究岩石在动力荷载下的损伤特征,以某岩质斜坡出露的二叠系灰岩为研究对象,联合单轴循环加卸载试验和微细观试验,从微细观角度研究了岩样在循环加卸载过程中的损伤特征和损伤演化规律,分析了不同加载条件对微细观损伤的影响,开展了宏观和微细观参数的关联分析。研究结果表明:岩样内部的损伤是一个渐进性过程,在破坏前,随着应力幅值和循环周次的增加,表现为以小孔隙的生成、扩展和贯通为主,大孔隙的数量轻微增加且数量相对少得多;与变上限应力加载相比,变下限应力加载更有利于小孔隙的连通和大孔隙的形成,导致岩样内部微裂隙面积更大,在宏观上表现为平均弹性模量的降低;在变上限应力时,低应力幅值的循环荷载对岩石内部结构劣化效应比单轴压缩条件下的大,而高应力幅值的循环荷载反而可能对岩石内部孔隙有一定压密作用,导致孔隙度相对较小,劣化效应相对减弱;综合多种微细观损伤变量演化趋势,可判断岩样在循环加卸载下经历了一段裂纹稳定扩展的阶段,对应的上限应力和下限应力范围分别为(0.4~0.6)σ_(f)(σ_(f)为静态峰值强度)和(0.3~0.5)σ_(f)。研究成果有助于从微细观层次更好地理解岩石的动力学特性,为岩质斜坡在地震作用下的动力响应行为和灾害孕育及启动过程提供理论解释。

关键词：灰岩微细观损伤单轴循环加卸载试验核磁共振试验电镜扫描试验

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火星进入流场特性中红外吸收光谱诊断研究

光谱学与光谱分析 2024年第5期44卷 1277-1282页

作者：曾徽文鹏杨国铭朱兴营欧东斌中国航天空气动力技术研究院电弧等离子应用装备北京市重点实验室北京100074

火星探索项目是我国深空探测工程的重要组成部分,“天问一号”2021年成功着陆火星,是中国航天在火星探索研究迈出的一大步。火星大气的气氛主要以二氧化碳为主,表面气压远低于地球大气,由于大气成分和进入轨道的差异,火星进入器面临的... 详细信息

火星探索项目是我国深空探测工程的重要组成部分,“天问一号”2021年成功着陆火星,是中国航天在火星探索研究迈出的一大步。火星大气的气氛主要以二氧化碳为主,表面气压远低于地球大气,由于大气成分和进入轨道的差异,火星进入器面临的热环境同地球返回器有很大不同,其进入过程为非空气介质的高速流动,将产生严重的气动防热问题。利用电弧风洞模拟火星进入器气动加热环境,是开展火星探测防热系统设计的关键。电弧风洞模拟火星进入高温过程,其主要过程是CO_(2)主导的离解反应,并且CO等高温离解组分与火星进入器防热材料相互作用,产生的催化效应会显著影响气动热环境。利用中红外量子级联激光吸收光谱测量技术,开展电弧加热火星进入流场特性的在线定量研究。电弧加热在线诊断研究利用CO在4.5μm附近中心波长为2212.625 cm^(-1)(v″=0,R(19))的谱线,实现了对火星地面流场的高信噪比测量,采用单线-直接吸收光谱诊断技术获得了自由流静温和关键组分CO摩尔浓度的实时测量结果。典型状态下,火星进入流场自由流静温和CO摩尔组分浓度在整个运行时间内保持稳定,显示出电弧加热流场良好的稳定性。六组重复试验显示自由流静温和CO摩尔组分浓度分别在(1757±69)K和(0.189±0.027)范围内,自由流温度波动≤3.9%,CO组分浓度波动≤14.3%,证明电弧风洞建立的火星地面流场具有非常好的重复性。基于该研究发展的电弧风洞中红外激光吸收光谱诊断技术,可以为研究火星进入器气动热环境和防热材料烧蚀-催化特性提供精细化测量能力。

关键词：火星进入电弧风洞中红外激光吸收光谱气流温度组分浓度