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Mode characteristics of nested eccentric waveguides constructed by two cylindrical nanowires coated with graphene

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Chinese Physics B 2022年第3期31卷 466-474页

作者： Ji Liu Lixia Yu wenrui xue Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education North University of China Taiyuan 030051China School of Information and Communication Engineering North University of China Taiyuan 030051China College of Physics and Electronic Engineering Shanxi University Taiyuan 030006China

A kind of nested eccentric waveguide constructed with two cylindrical nanowires coated with graphene was *** mode characteristics of this waveguide were studied using the multipole method. It was found that the three lowest modes(mode 0, mode 1 and mode 2) can be combined by the zero-order mode or/and the first-order modes of two single nanowires. Mode 0 has a higher figure of merit and the best performance among these modes within the parameter range of interest. The mode characteristics can be adjusted by changing the parameters of the waveguide. For example, the propagation length will be increased when the operating wavelength, the minimum spacing between the inner and outer cylinders, the inner cylinder radius and the Fermi energy are increased. However, when the outer cylinder radius, the dielectric constants of region Ⅰ, or the dielectric constants of region Ⅲ are increased, the opposite effect can be seen. These results are consistent with the results obtained using the finite element method(FEM). The waveguide structure designed in this paper is easy to fabricate and can be applied to the field of micro/nano sensing.

关键词： graphene nanowire waveguide multipole method

Effects of tacrolimus and cyclosporine treatment on metabolic syndrome and cardiovascular risk factors after renal transplantation：a meta-analysis

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Chinese Medical Journal 2014年第12期127卷 2376-2381页

作者： xue wenrui Zhang Qiang Xu Yue Wang Wei Zhang Xiaodong Hu Xiaopeng Department of Urology Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China

Background The therapeutic success of renal transplantation has been largely attributable to the development of effective and balanced immunosuppressive treatment *** study provides a meta-analysis of a series of randomized controlled trials that compared the effects of tacrolimus and cyclosporine on metabolic syndrome （MetS） and cardiovascular risk factors after renal *** We searched various electronic databases and bibliographies,including MEDLINE,the Cochrane Central Register of Controlled Trials,and EMBASE,for relevant studies published prior to October *** Our meta-analysis included five randomized controlled trials that examined a total of 923 *** tacrolimus group and the cyclosporine group exhibited no significant differences in MetS incidence after renal transplantation; risk ratio （RR）：1.06,95％ confidence interval （C/）：0.73-1.55,P=*** treatment was associated with a higher incidence of hyperlipidemia （RR：0.50,95％ CI：0.39-0.64,P ＜0.01）.Although there were no statistically significant differences,cyclosporine treatment was associated with a higher incidence of hypertension （RR：0.91,95％ CI：0.83-1.00,P=0.06） after renal transplantation compared to tacrolimus treatment,and tacrolimus treatment was associated with a higher incidence of diabetes after renal transplantation （RR：1.79,95％ CI：0.98-3.27,P=0.06） compared to cyclosporine *** Compared to tacrolimus treatment,cyclosporine treatment was associated with a higher incidence of *** large-scale studies are expected to be conducted to further confirm our findings.

关键词： post-renal transplantation metabolic syndrome cardiovascular risk factors cyclosporine tacrolimus calcineurin inhibitor meta-analysis

Effect of continuous hypothermic machine perfusion transport system（AirdriveTM） on canine kidney preservation

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Chinese Medical Journal 2014年第6期127卷 1105-1109页

作者： Hu Xiaopeng xue wenrui Zhang Qiang Wang Wei Zhang Jiqing Zhang Xiaodong Department of Urology Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China

Background Organ preservation keeps the quality of the organs under prolonged ischemia. Continuous machineperfusions are gaining an important position in clinical research and practice. The aim of this study was to evaluate theprotective effect of continuous hypothermic machine perfusion transport system （AirdriveTM） on cold ischemic injury ofcanine kidney.

关键词： continuous hypothermic machine perfusion organ preservation organ transplantation canine kidney common cold preservation

Unlocking photocatalytic NO removal potential in an S-type UiO-66-NH_(2)/ZnS(en)Unlocking photocatalytic NO removal potential in an S-type UiO-66-NH_(2)/ZnS(en)_(0.5)heterostructureheterostructure

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Interdisciplinary Materials 2024年第3期3卷 400-413页

作者： wenrui Dai Chenxiang Wang Yi Wang Jieting Sun Hang Ruan Yuhua xue Shuning Xiao School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghaiChina

The contamination of nitric oxide presents a significant environmental challenge,necessitating the development of efficient photocatalysts for *** heterojunctions encounter obstacles such as large contact barriers,sluggish charge transport,and compromised redox ***,we introduce an innovative S-type heterostructure photocatalyst,UiO-66-NH_(2)/ZnS(en)0.5,designed specifically to overcome these *** synthesis,employing a unique microwave solvothermal method,strategically aligns the lowest unoccupied molecular orbital of UiO-66-NH_(2)with the highest occupied molecular orbital of ZnS(en)0.5,fostering the formation of a stepped *** resulting intimate interface contact generates a built-in electric field,facilitating charge separation and migration,as evidenced by time-resolved photoluminescence spectroscopy and photoelectrochemical *** abundant active sites in the porous UiO-66-NH_(2)counterpart provide adsorption and activation sites for nitrogen monoxide(NO)*** evaluation reveals exceptional photocatalytic NO removal,achieving 70%efficiency and 99%selectivity toward nitrates under simulated solar *** from X-ray photoelectron spectroscopy and trapping experiments supports the effectiveness of the S-type heterostructure,showcasing refined reactive oxygen species,particularly ***,this study introduces a new perspective on advanced NO oxidation and unlocks the potential of S-scheme heterojunctions to refine reactive oxygen species for NO remediation.

关键词： heterojunction metal-organic framework NO oxidation photocatalysis S-scheme

武汉滨江消落带景观设计研究——以汉口江滩公园为例

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装饰 2019年第1期 88-91页

作者：薛文睿杜守帅江南大学

消落带是水体出现季节性的水位变化时,靠近陆地的部分周期性的产生裸露或被水淹没的条带状区域。目前武汉市的滨江消落带以优先防洪功能的人工硬质堤岸为主,无法构成美观、生态、多样的城市消落带景观。本文将以汉口江滩公园为例,对武... 详细信息

消落带是水体出现季节性的水位变化时,靠近陆地的部分周期性的产生裸露或被水淹没的条带状区域。目前武汉市的滨江消落带以优先防洪功能的人工硬质堤岸为主,无法构成美观、生态、多样的城市消落带景观。本文将以汉口江滩公园为例,对武汉滨江消落带景观设计展开探讨。

关键词：滨水区景观规划消落带生态修复武汉江滩

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槽深线性渐变的表面等离子光栅光吸收器

光学学报 2017年第1期37卷 286-292页

作者：梁磊霞薛文瑞杨荣草山西大学物理电子工程学院山西太原030006

设计了一种槽深呈线性渐变的表面等离子光栅光吸收器,运用有限元算法分析了该吸收器的结构参数及光入射角度对其在可见光波段内的吸收性能的影响,并与槽深呈对称分布的光吸收器进行了对比。结果表明,增加空气凹槽的数目、宽度和深度以... 详细信息

设计了一种槽深呈线性渐变的表面等离子光栅光吸收器,运用有限元算法分析了该吸收器的结构参数及光入射角度对其在可见光波段内的吸收性能的影响,并与槽深呈对称分布的光吸收器进行了对比。结果表明,增加空气凹槽的数目、宽度和深度以及减小相邻凹槽间距,均可有效提高光吸收率。与槽深呈对称分布的光吸收器相比,该吸收器的吸收性能更优越。

关键词：光学器件光吸收器表面等离子光栅

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基于LiF和NaF的超宽带红外吸收器

光学学报 2018年第1期38卷 283-289页

作者：陈曦薛文瑞赵晨李昌勇山西大学物理电子工程学院山西太原030006 山西大学量子光学与光量子器件国家重点实验室激光光谱研究所山西太原030006

设计了一种基于LiF和NaF材料的光栅型超宽带红外吸收器,并采用频域有限差分法对其吸收特性进行了研究。研究结果表明,单独采用LiF(或NaF)和电介质材料构成的光栅型吸收器都具有较宽的吸收带,但其吸收带处于不同的红外波段。同时采用LiF... 详细信息

设计了一种基于LiF和NaF材料的光栅型超宽带红外吸收器,并采用频域有限差分法对其吸收特性进行了研究。研究结果表明,单独采用LiF(或NaF)和电介质材料构成的光栅型吸收器都具有较宽的吸收带,但其吸收带处于不同的红外波段。同时采用LiF、NaF及电介质材料构成的光栅型吸收器可以把这两个吸收带衔接起来。通过优化参数,在入射波长为15~45μm、入射角度为0°~80°的范围内,吸收器的吸收率达到80%以上,实现了宽带吸收。结构中复合层的层数对吸收率有最大的影响,电介质层的厚度对吸收率的影响较小。

关键词：光学器件吸收器磁激元光栅红外

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双芯复合格点光子晶体光纤的负色散特性

光学学报 2008年第1期28卷 27-30页

作者：王红华薛文瑞张文梅山西大学物理电子工程学院山西太原030006

介绍了一种双芯复合格点负色散光子晶体光纤,其包层是由连续电介质纯硅背景上挖出的两种大小不同的空气孔构成,芯区是由掺锗的高折射率的材料构成。为了实现负色散,还移去了包层中的一圈空气孔。采用频域有限差分法对其负色散特性进行... 详细信息

介绍了一种双芯复合格点负色散光子晶体光纤,其包层是由连续电介质纯硅背景上挖出的两种大小不同的空气孔构成,芯区是由掺锗的高折射率的材料构成。为了实现负色散,还移去了包层中的一圈空气孔。采用频域有限差分法对其负色散特性进行分析表明,通过调整空气孔间距和两种空气孔的尺寸,可以得到不同程度的宽带负色散。当内芯半径取0.95μm,孔间距取2.15μm,大空气孔直径取1.9μm,小空气孔直径取1.1μm时,可在1.55μm处实现宽带负色散,其半峰全宽超过了200 nm。这种光纤的包层中空气孔呈六边形分布,空气孔的尺寸均大于1μm,降低了制作的难度。这种光纤可以用于波分复用光纤通信系统中的宽带色散补偿。

关键词：光纤光学光子晶体光纤负色散频域有限差分方法

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方形渐变空气孔微结构光纤的色散特性分析

光学学报 2005年第2期25卷 174-178页

作者：武劲青薛文瑞周国生山西大学物理电子工程学院量子光学与光量子器件国家重点实验室太原030006

提出了一种新型的方形分布渐变空气孔微结构光纤.借助时域有限差分法计算了孔间距取2.0μm和2.5 μm,最小孔直径分别取0.4 μm、0.6 μm、0.7 μm、0.8μm和1.0μm,从第一层到第五层直径线性递增量分别为0.1μm/层和0.2 μm/层的五层渐... 详细信息

提出了一种新型的方形分布渐变空气孔微结构光纤.借助时域有限差分法计算了孔间距取2.0μm和2.5 μm,最小孔直径分别取0.4 μm、0.6 μm、0.7 μm、0.8μm和1.0μm,从第一层到第五层直径线性递增量分别为0.1μm/层和0.2 μm/层的五层渐变空气孔微结构光纤的基模色散曲线图,结果表明渐变空气孔微结构光纤在控制色散的能力上明显优于空气孔不变的微结构光纤,这种光纤的色散曲线在1400～2000 nm波长范围内保持平坦且具有更低的色散量;当渐变空气孔微结构光纤第三层孔的直径取与孔直径不变微结构光纤的孔直径相同,且第一层到第五层孔直径按每层0.2μm的斜率增长时,其色散曲线最低最平坦,色散值保持在30 ps/(km·nm)左右.

关键词：导波与光纤光学微结构光纤色散时域有限差分法导波模式