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Chinese Physics Letters 2013年第8期30卷 202-204页

作者： ZHANG Si-Lei LI hai-Jie WEI Lian-Fu FANG Yu-Rong WANG Yi-Wen ZHOU Pin-Jia WEI Qiang cao chun-hai XIONG Xiang-Zheng Quantum Optoelectronics Laboratory Southwest Jiaotong UniversityChengdu 610031 State Key Laboratory of Optoelectronic Materials Technologies Sun Yat-sen UniversityGuangzhou 510275 Institute of Electromagnetic Field and Microwave Technology Southwest Jiaotong UniversityChengdu 610031 Research Institute of Superconductor Electronics Nanjing UniversityNanjing 210093

We design and fabricate two types of superconducting niobium coplanar waveguide microwave resonators with different coupling capacitors on high purity Si *** microwave transmissions are measured at 20 *** is found that these two types of resonators possess significantly different loaded quality factors;one is 5.6×10^(3) and the other is 4.0×10^(4).The measured data are fitted well by classical ABCD matrix approach and consequently the coupling capacitances are *** is found that the transmission peak deviates from the standard Lorentizian with a frequency broadening.

关键词： waveguide Waveguide microwave

Fabrication of High-Quality Niobium Superconducting Tunnel Junctions

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Chinese Physics Letters 2011年第8期28卷 289-292页

作者： XU Qin-Yin cao chun-hai LI Meng-Yue JIANG Yi ZHA Shi-Tong KANG Lin XU Wei-Wei CHEN Jian WU Pei-Heng Research Institute of Superconductor Electronics(RISE) Nanjing UniversityNanjing 210093

For high-quality superconducting tunnel junctions(STJs),it is necessary to reduce leakage current as much as *** describe the fabrication of niobium STJs using the selective niobium(Nb)etching process and various ways to minimize the leakage *** experiment shows that the leakage current mainly comes from shorts in the tunnel barrier layer rather than those around the junction *** systematic analysis of the thin film stress,surface morphology and modified junction structures,we fabricate high-quality Nb STJs with a gap voltage of 2.8 mV and a leakage current at 1 mV as low as 8.1%and 0.023%at 4.2 K and 0.3 K,respectively.

关键词： leakage tunnel film

Extraordinary Transmission through Fractal-Featured Metallic and Superconducting Films at Terahertz Frequency

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Chinese Physics Letters 2012年第11期29卷 56-59页

作者： LIANG Lan-Ju JIN Biao-Bing ZHANG Qiu-Yi WU Jing-Bo BAO Yong-Jun JIA Tao JIA Xiao-Qing cao chun-hai KANG Lin XU Wei-Wei CHEN Jian WU Pei-Heng Research Institute of Superconductor Electronics(RISE) School of Electronic Science and EngineeringNanjing UniversityNanjing 210093 State Key Laboratory of Superhard Materials Jilin UniversityChangchun 130012

We report on fractal-featured square and ring-shaped apertures with a Sierpinski carpet pattern(SCP)on metallic and superconducting NbN *** extraordinary terahertz(THz)transmission peaks are studied in the transmission spectra using both THz time-domain spectroscopy and numerical *** characteristic transmission peaks are found to be associated with the interaction of surface plasmon polaritons(SPPs)and localized surface plasmons(LSPs)for ring-shaped *** effect of LSPs is less remarkable in the square *** the superconducting NbN film,when the temperature is slightly lower than the critical transition temperature T_(c),the peak magnitude of SPP resonances is most prominent due to the non-monotonic temperature dependence of kinetic *** results provide a new way to design compact and efficient THz devices.

关键词： shaped ordinary Fractal

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高层建筑基坑变形监测研究

山东煤炭科技 2020年第3期38卷 192-195页

作者：曹海春山西工程职业学院山西太原030031

为了掌握高层建筑基坑的变形规律,消除安全隐患,本文对高层建筑基坑变形监测的工作流程、变形监测的项目及方法、数据分析等方面进行论述。得出高层建筑的基坑施工应该加快施工进度,减少基坑暴露时间,加快基坑底板浇筑,从而减小基坑的变... 详细信息

为了掌握高层建筑基坑的变形规律,消除安全隐患,本文对高层建筑基坑变形监测的工作流程、变形监测的项目及方法、数据分析等方面进行论述。得出高层建筑的基坑施工应该加快施工进度,减少基坑暴露时间,加快基坑底板浇筑,从而减小基坑的变形,减小基坑施工对周边环境的影响。

关键词：基坑变形监测预警值

Frequency-tunable transmon in a three-dimensional copper cavity

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Chinese Physics B 2015年第11期24卷 81-84页

作者：潘佳政曹志敏范云益周渝兰栋刘宇浩陈志平李永超曹春海许伟伟康琳陈健于海峰于扬孙国柱吴培亨 National Laboratory of Solid State Microstructures and Research Institute of Superconductor Electronics School of Electronic Science and Engineering Nanjing University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China National Laboratory of Solid State Microstructures School of Physics Nanjing University

We have realized a frequency-tunable transmon in a three-dimensional cooper cavity using a direct current supercon- ducting quantum interference device. Both the transition frequency of the transmon and the frequency of the dressed cavity can be varied with the applied external flux bias, which are well consistent with the theoretical model. The range of the variable transition frequency is from 5.188 GHz to 7.756 GHz. The energy relaxation time of the transmon is hundreds of nanoseconds.

关键词： superconducting qubit three-dimensional transmon tunable transmon dc-superconducting quantum interference device

内冷式搅拌法制备不同铝合金半固态浆料工艺研究

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铸造 2016年第2期65卷 141-145,150页

作者：许朋朋王连登陈晓张宇曹海春福州大学机械工程及自动化学院福建福州350116 福建省瑞奥麦特轻金属有限责任公司福建将乐353300

采用内冷式搅拌法制备了A319、A356、A380、ZL203、7075等5种牌号铝合金的半固态浆料。研究了内冷搅拌速度、内冷块/铝液质量比、铝液温度对A319半固态浆料显微组织的影响。结果表明：提高内冷搅拌速度不仅能提高初生琢-Al相圆整度,还... 详细信息

采用内冷式搅拌法制备了A319、A356、A380、ZL203、7075等5种牌号铝合金的半固态浆料。研究了内冷搅拌速度、内冷块/铝液质量比、铝液温度对A319半固态浆料显微组织的影响。结果表明：提高内冷搅拌速度不仅能提高初生琢-Al相圆整度,还具有晶粒细化效应。在内冷块/铝液质量比为3%、铝液温度为615℃以及内冷块/铝液质量比为5%、铝液温度为615-625℃条件下均可以制备出组织良好的半固态浆料,显微组织中初生琢-Al相平均晶粒尺寸和形状因子分别可以达到61-71滋m和0.68-0.73。分析了内冷式搅拌法制备铝合金半固态浆料过程中球状晶的形核及长大过程。

关键词：半固态铝合金内冷搅拌显微组织

用Cr/Au/Ni/Au制备n-GaN欧姆接触

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北京工业大学学报 2005年第5期31卷 449-451页

作者：谢雪松张小玲吕长志武利袁颖李志国曹春海北京工业大学电子信息与控制工程学院北京100022 南京固体器件研究所南京210016

为了获得n-GaN的低接触电阻的欧姆接触,采用Cr/Au/Ni/Au金属化系统与n—GaN形成欧姆接触,并对其不同温度下的接触电阻率进行了测试分析.室温下Cr/Au/Ni/Au的接触电阻率为0.32mΩ·m2。随着温度的升高,接触电阻率略有增加,在300℃时接触... 详细信息

为了获得n-GaN的低接触电阻的欧姆接触,采用Cr/Au/Ni/Au金属化系统与n—GaN形成欧姆接触,并对其不同温度下的接触电阻率进行了测试分析.室温下Cr/Au/Ni/Au的接触电阻率为0.32mΩ·m2。随着温度的升高,接触电阻率略有增加,在300℃时接触电阻率为0.65mΩ·cm2,因此此欧姆接触适合在高温下使用.

关键词： n-GaN材料欧姆接触接触电阻率

基于SPOT与ETM+影像融合方法的实验及融合质量评价

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科技情报开发与经济 2009年第12期19卷 161-164页

作者：曹海春王晓勇山西煤炭职业技术学院地测工程系山西太原030031 济南煤炭设计院有限公司山东济南250031

通过对SPOT影像全色波段和ETM+多光谱影像、ETM+全色波段和ETM+多光谱影像两组数据的实验,从定性、定量的角度对两种融合方法进行了分析和评价,归纳出适用于SPOT全色波段与ETM+多光谱影像和ETM+全色波段影像与ETM+多光谱影像的融合方法。

关键词：影像融合 HIS融合 PCA融合 Brovey融合小波融合

Microplastic and nanoplastic exposure and risk of diabetes mellitus

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World Journal of Clinical Cases 2025年第3期13卷 24-29页

作者： Hui-Yi Hsiao chung-Yi Nien Ruei-Feng Shiu Wei-chun Chin Tzung-hai Yen Department of Biomedical Sciences College of MedicineChang Gung UniversityTaoyuan 33302TaiwanChina Center for Tissue Engineering Chang Gung Memorial HospitalLinkouTaoyuan 33305TaiwanChina Department of Life Sciences National Central UniversityZhongli 320317TaoyuanTaiwanChina Center of Excellence for The Oceans Taiwan Ocean UniversityKeelung 20224TaiwanChina Institute of Marine Environment and Ecology Taiwan Ocean UniversityKeelung 20224TaiwanChina Department of Chemical and Materials Engineering University of California MercedMercedCA 95343United States Department of Nephrology Clinical Poison CenterChang Gung Memorial HospitalLinkou 33305TaoyuanTaiwanChina School of Traditional Chinese Medicine College of MedicineChang Gung UniversityTaoyuan 33302TaiwanChina

The issue of plastic pollutants has become a growing *** microplastics(MPs)(particle size<5 mm)and nanoplastics(NPs)(particle size<1μm)can cause DNA damage,cytotoxicity,and oxidative stress in various *** primary known impacts of microplastic/nanoplastic are observed in the liver and respiratory system,leading to hepatotoxicity and chronic obstructive pulmonary *** research on the effects of MPs and NPs on diabetes is still in its early stages,there are potential *** editorial highlights the risk to diabetics from co-exposure to contaminants and MPs/NPs,supported by evidence from animal studies and the various chemical compositions of MPs/NPs.

关键词： Microplastics Nanoplastics Plastic pollution,Diabetes mellitus Insulin resistance

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超导纳米线单光子探测器

物理学报 2011年第3期60卷 790-796页

作者：张蜡宝康琳陈健赵清源郏涛许伟伟曹春海金飚兵吴培亨南京大学电子科学与工程学院超导电子学研究所南京210093

利用磁控溅射、电子束光刻和反应离子刻蚀等微加工技术,开展了超导纳米线单光子探测器(SNSPD)的研究.通过对SNSPD的设计和制备工艺参数的优化,成功制备出了高质量的SNSPD.单光子检测实验表明,制备的SNSPD对660nm波长的光信号,系统检测... 详细信息

利用磁控溅射、电子束光刻和反应离子刻蚀等微加工技术,开展了超导纳米线单光子探测器(SNSPD)的研究.通过对SNSPD的设计和制备工艺参数的优化,成功制备出了高质量的SNSPD.单光子检测实验表明,制备的SNSPD对660nm波长的光信号,系统检测效率可达30%,对1550nm波长光信号,最大系统检测效率为4.2%.在平均暗计数小于10c/s的情况下,系统检测效率大于20%(660nm)和3%(1550nm).

关键词：单光子氮化铌纳米线探测器