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基于石墨电极的硅基金刚石日盲紫外探测器

发光学报 2024年第4期45卷 630-636页

作者：王增将王孝秋朱剑锋任檬檬吴国光张宝林邓高强董鑫张源涛吉林大学电子科学与工程学院集成光电子学国家重点实验室吉林长春130012

金刚石优异的材料特性使其在日盲紫外探测领域有很大的应用潜力。本文采用微波等离子体化学气相沉积设备在(111)晶面单晶硅衬底上沉积金刚石薄膜,并基于该薄膜采用光刻胶热解法制备石墨材料平面叉指电极MSM结构金刚石日盲紫外探测器,为... 详细信息

金刚石优异的材料特性使其在日盲紫外探测领域有很大的应用潜力。本文采用微波等离子体化学气相沉积设备在(111)晶面单晶硅衬底上沉积金刚石薄膜,并基于该薄膜采用光刻胶热解法制备石墨材料平面叉指电极MSM结构金刚石日盲紫外探测器,为全碳金刚石探测器的实现提供了新方法。结果表明,该硅基金刚石薄膜为高取向多晶薄膜,(111)晶面的XRD 2θ扫描半峰宽为0.093°,拉曼光谱金刚石特征峰峰位1332 cm^(-1),半峰宽为4 cm^(-1),薄膜晶体质量较高;石墨电极紫外探测器在5 V偏置电压下的暗电流为2.07×10^(-8) A,光暗电流比为77,开关特性良好,并且石墨电极探测器具有优异的时间响应,上升时间为30 ms,下降时间为430 ms。

关键词：金刚石薄膜石墨电极日盲紫外探测器

A Computational Study on the Discharge Characteristics of Atmospheric Dielectric Barrier Discharges at a Constant Power

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Plasma Science and Technology 2013年第10期15卷 1025-1030页

作者： SONG Xinxin TAN Zhenyu CHEN Bo zhang yuantao School of Electrical Engineering Shandong University Jinan 250061 China State Gride of China Technology College Jinan 250002 China

The study on homogeneous DBDs at atmospheric pressure has attracted much attention for their advantages in applications. Tremendous work has been conducted both experimentally and numerically at a constant applied voltage or driving frequency. However the investigation of dielectric barrier discharges is still scarce for a constant power or power density. In this work, a new computational approach for DBDs is developed to explore atmospheric DBDs at a constant power based on a one-dimensional fluid model. The frequency and gap spacing effects on the atmospheric plasmas are systematically analyzed based on computational data. The computational results show that at a constant power both the current density and the amplitude of the applied voltage decrease, whereas the current pulse width increases, with increasing frequency. The simulation also indicates that as the gap spacing is raised with a fixed power and frequency, the current density and electron density increase initially, then reach their peak values, and then decrease, which means that there are maximum values for both of them. These results are significant for many industrial applications, as they can be used to optimize plasma devices of DBDs with the consideration of power consumption.

关键词： atmospheric dielectric barrier discharges simulation frequency gas spacing constant power

Kinetic simulation of the transition from a pulse-modulation microwave discharge to a continuous plasma

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Plasma Science and Technology 2020年第1期22卷 45-52页

作者： Guan WANG Ye KUANG yuantao zhang School of Electrical Engineering Shandong UniversityJinan 250061People's Republic of China

The generation of a very strong peak current in the first period(PCFP)in a pulse-modulated microwave discharge has been discussed in previous *** this paper we focus on the transition process from a pulsed discharge to a fully continuous one driven by the pulsed microwave power source by means of a kinetic *** computational results show that by increasing the duty cycle or voltage modulation rate(VMR).the discharge eventually becomes fully continuous and PCFP can no longer he *** the transition process,the distributions of the electric field,electron energy probability function(EEPF)and plasma density are discussed according to the simulation data,showing different discharge *** simulations indicate that many high-energy electrons with electron energy larger than 20eV and low-energy electrons with electron energy less than 3eV could he generated in a pulsed microwave discharge,together with a reversal electric field formed in the anode sheath when PCFP ***,only medium-energy electrons could be observed in a fully continuous ***,by investigating the transition process the pulse-modulated microwave discharges can be further optimized for plasma applications at atmospheric pressure.

关键词： atmospheric plasmas pulse modulation radio-frequency discharge.PIC-MCC model

Numerical study on peak current in pulse-modulated radio-frequency discharges with atmospheric helium–oxygen admixtures

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Plasma Science and Technology 2022年第8期24卷 77-83页

作者： Xucheng WANG Shuhan GAO yuantao zhang School of Electrical Engineering Shandong UniversityJinan 250061People's Republic of China

Atmospheric pressure pulse-modulated radio-frequency(rf) plasmas have drawn growing attention due to their potential in *** selecting appropriate modulation parameters,the diffused and large-volume plasma can be generated in the pulse-modulated rf plasma with plenty of reactive oxygen species,which is essential for the biomedical application of helium–oxygen *** this paper,by means of a fluid model,the formation of the peak current in the first period(PCFP) in a pulse-modulated rf helium–oxygen discharge driven by a sinusoidal voltage is discussed,the existence of a reverse field near the anode caused by the negative and positive charges contributes greatly to the mechanism of *** the simulation,as oxygen admixture increases,the negative ions of O~- and O~-become dominative anions in the sheath region,which can’t be driven to the anode very quickly to build a reverse field,thus the PCFP eventually *** study can effectively enhance the understanding of different transportation behavior of heavy negative ions and electrons,and further optimize pulsemodulated rf discharges with helium–oxygen mixtures in various applications.

关键词： pulse modulation RF discharge fluid model

天然气量价耦合非线性销售优化模型构建及应用

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石油科学通报 2024年第2期9卷 354-364页

作者：赵思睿刘定智张曦侯浩远张元涛左丽丽吴长春中国石油大学(北京)油气管道输送安全国家工程研究中心/石油工程教育部重点实验室/城市油气输配技术北京市重点实验室北京102249 中国石油天然气股份有限公司规划总院北京100083

在国家天然气产业“X+1+X”政策下,针对直面市场竞争的销售环节,天然气价格对下游客户市场的开发至关重要。针对天然气销售公司与下游客户签订的阶梯气价结算合同在制定过程未充分考虑客户购气能力的不足,本文通过分析客户量价关系对阶... 详细信息

在国家天然气产业“X+1+X”政策下,针对直面市场竞争的销售环节,天然气价格对下游客户市场的开发至关重要。针对天然气销售公司与下游客户签订的阶梯气价结算合同在制定过程未充分考虑客户购气能力的不足,本文通过分析客户量价关系对阶梯价格的影响,结合天然气供应链结构,建立了天然气量价耦合非线性优化模型。该模型以天然气销售公司总利润最大为目标函数,以天然气供应链各环节气量、供销气量以及客户各阶梯气价为决策变量,考虑各环节气量上下限约束、各客户调价空间约束、节点流量平衡约束、客户量价关系约束、阶梯价格约束、客户类型约束等,调用GUROBI求解器中的空间分支定界算法对该混合整数二次规划模型进行求解。将模型及算法应用于某省网大型多气源多客户(含10个气源和121个客户)的供销系统中,计算时间不超过5秒,算法求解效率高。与阶梯价格方案固定的销售情况相比,所得各客户销量及气价方案使得总效益最高提升17.2%,具有较好的优化效果。本文构建的模型及算法应用于不同客户类型的案例中,同时兼顾了客户和天然气销售公司的利益。可用于天然气销售公司与下游客户进行价格复议时推荐调价方案,并为天然气销售公司制定阶梯气价销售方案提供依据。

关键词：天然气客户阶梯气价量价关系非线性优化调价方案

Studies on Growth of N-Polar InN Films by Pulsed Metal-organic Vapor Phase Epitaxy

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Chemical Research in Chinese Universities 2016年第4期32卷 669-673页

作者： ZHAO Baijun HAN Xu YANG Fan DONG Xin zhang yuantao State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 P R. China Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

We reported the growth of N-polar InN films on N-polar GaN/sapphire substrates by pulsed metal-organic vapor phase epitaxy. The crystalline quality, surface morphology, optical and electrical properties of N-polar InN films were investigated in details by varying the breaking time and trimethylindium（TMIn） duration of pulse cycle. It has been found that when the breaking time and the TMIn duration in each cycle remain at 30 and 60 s, respectively, the N-polar InN film obtained exhibits a better crystalline quality and greater optical properties. Meanwhile, the surface morphology and electrical properties of the N-polar InN films also greatly depend on the given growth conditions.

关键词： N-Polar Pulsed metal-organic vapor phase epitaxy InN

美军“快速龙”托盘化武器运用分析及应对思考

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国防科技 2024年第4期45卷 70-75页

作者：张元涛赵晓宏落焱霞杨典 32178部队科技创新研究中心北京100192

采用实例引入、性能分析、运用预估等方法分析美军“快速龙”托盘化武器,揭示其可能衍生的新打法、新威胁,为预置应对策略提供参考。美军“快速龙”托盘化武器能够通过远程投放方式实施精准打击,具有较高的穿透性、隐蔽性、弹群性等作... 详细信息

采用实例引入、性能分析、运用预估等方法分析美军“快速龙”托盘化武器,揭示其可能衍生的新打法、新威胁,为预置应对策略提供参考。美军“快速龙”托盘化武器能够通过远程投放方式实施精准打击,具有较高的穿透性、隐蔽性、弹群性等作战特点。未来该武器可能高频出现在广域战场,作为嵌入高端杀伤链的重要环节,实施防区外隐形“踹门”、远程穿透、饱和突击、干扰压制以及纵深拔点等高危任务。

关键词：托盘化武器作战概念美军 “快速龙”

Metal-organic Chemical Vapor Deposition of GaSb/GaAs Quantum Dots： the Dependence of the Morphology on Growth Temperature and Vapour V/Ⅲ Ratio

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Chemical Research in Chinese Universities 2014年第1期30卷 13-17页

作者： YANG Haoyu LIU Renjun LU You WANG Liankai LI Tiantian LI Guoxing zhang yuantao zhang Baolin State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 P. R. China

GaSb quantum dots have been widely applied in optoelectronic devices due to its unique electrical and optical *** effects of metal-organic chemical vapor deposition（MOCVD） parameters,such as growth temperature and vapour V/Ⅲ ratio[V/Ⅲ ratio means the molar ratio of trimethylgallium（TMGa） and triethylantimony（TESb）],were systematically investigated to achieve GaSb quantum dots with high quality and high *** features of surface morphology of uncapped GaSb quantum dots were characterized by atomic force microscope（AFM） *** results show that the surface morphologies of quantum dots are strongly dependent on growth temperature and vapour V/Ⅲ *** quantum dots with an average height of 4.94 nm and a density of 2.45× 1010 cm-2 were obtained by optimizing growth temperature and V/Ⅲ ratio.

关键词： GaSb quantum dot Surface morphology Metal-organic chemical vapor deposition Atomic force microscope

Studies on plasma-activated perilla seed oil:Diagnosis,optimisation,and validation of reactive species

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High Voltage 2023年第4期8卷 841-851页

作者： Xiaolong Wang Jun Liu Quanxin Li Lian Li Shanrui Li Yunhan Ding Tong Zhao Ying Sun yuantao zhang School of Electrical Engineering Shandong UniversityJinanChina State Grid Hubei Electric Power Co. Ltd.WuhanChina The Second Hospital of Shandong University Shandong UniversityJinanChina Key Laboratory of Chemical Biology(Ministry of Education) Institute of Biochemical and Biotechnological DrugsSchool of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinanChina

Recently,the applications of cold atmospheric plasma(CAP)in liquid treatment have attracted increasing attention owing to its excellent medical *** has been proved that CAP can effectively enhance the biological activity of vegetable oils due to the generation of reactive *** the reactor parameter is an important approach to regulate reactive species in plasma-activated oil to obtain better biological *** this study,a self-made jet array driven by a pulsed power supply was used to generate large-area plasma to irradiate perilla seed oil(PSO),with the formation of plasmaactivated perilla seed oil(PAPSO).By means of laser-induced fluorescence and chemical titration,the relative density of hydroxyl radical radical in plasma jet,as well as the activity of PAPSO were measured under different discharge parameters,and realised the control of the activity of *** vitro experiments showed that PAPSO significantly enhanced its ability to inhibit cancer cells proliferation and induce apoptosis after plasma treatment,which provides a reference for cancer *** study is helpful to further understand the influence of plasma dose effect on the activity of media and provide guidance for related plasma medical applications.

关键词： reactive cancer radical