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激光辅助化学气相沉积研究进展

光电工程 2022年第2期49卷 1-29页

作者：范丽莎刘帆吴国龙 volodymyr S.Kovalenko 姚建华浙江工业大学激光先进制造研究院浙江杭州310023 浙江工业大学机械工程学院浙江杭州310023 高端激光制造装备省部共建协同创新中心浙江杭州310023 乌克兰国立科技大学激光技术研究所乌克兰基辅03056

激光化学气相沉积技术(LCVD)相较于传统化学气相沉积技术具有低沉积温度、高膜层纯度、高沉积效率等特点,在各类功能薄膜材料制备上有着巨大的应用前景。围绕激光化学气相沉积技术,本文详细阐述了激光热解离、激光光解离与激光共振激发... 详细信息

激光化学气相沉积技术(LCVD)相较于传统化学气相沉积技术具有低沉积温度、高膜层纯度、高沉积效率等特点,在各类功能薄膜材料制备上有着巨大的应用前景。围绕激光化学气相沉积技术,本文详细阐述了激光热解离、激光光解离与激光共振激发解离作用机制,同时介绍了各类LCVD的常用设备,着重总结了LCVD在金属材料、碳基材料、氧化物材料以及半导体材料等各类材料制备应用上的最新研究进展,特别介绍了LCVD制备过程中常用的检测与分析方法,最后讨论了激光化学气相沉积技术目前所面临的挑战与机遇,并展望了该技术的发展前景。

关键词：激光化学气相沉积薄膜制备热解离光解离共振激发解离

One-pot Synthesis and X-ray Structure Determination of 7-(Diethylamino)-3-(4-aminophenyl)coumarin

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Chinese Journal of Structural Chemistry 2015年第12期34卷 1841-1844页

作者： KULAI Ihor MALLET-LADEIRA Sonia KOVTUNENKO volodymyr VOITENKO Zoia IMRCP CNRS UMR 5623 University of Toulouse Department of Chemistry Taras Shevchenko National University of Kyiv ICT FR CNRS 2599 University of Toulouse

7-（Diethylamino）-3-（4-aminophenyl）coumarin has been synthesized in a new one-pot synthesis by a three-step process starting from 4-（diethylamino）salicylaldehyde and 4-nitrophenylacetonitrile. The product was obtained in a good yield with a high degree of purity and characterized by NMR, IR and HR-MS. The orange crystals of the title compound were grown from ethyl acetate solution. The solid state structure was established by X-ray crystallography analysis. The crystal belongs to the orthorombic system, space group Pccn with a = 11.1095（5）, b = 33.0187（15）, c = 17.2865（7） A, V= 6341.1（5） A3, C19H20N2O2, Mr = 308.37, ρcalc = 1.292 g·cm^-3, = 0.085 mm^-1, F（000） = 2624, the final R = 0.0480 and wR = 0.1265 （I〉 2σ（I））.

关键词： coumarin dye crystal structure fluorescence one-pot synthesis

铁粉辅助微波热激联合降压分解甲烷水合物试验

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中南大学学报（自然科学版） 2022年第12期53卷 4845-4854页

作者：朱月张靖朱金龙 volodymyr Bondarenko ANDRⅡ Dreus 李小洋梁金强刘宝昌吉林大学建设工程学院吉林长春130012 浙江大学超重力研究中心浙江杭州310058 南方海洋科学与工程广东省实验室(广州) 广东广州511458 第聂伯国立技术大学地下采矿系乌克兰第聂伯49005 第聂伯国立大学流体力学与能源及传质系乌克兰第聂伯49089 中国地质科学院勘探技术研究所河北廊坊065000 中国地质调查局广州海洋地质调查局广东广州510700

为了提高甲烷水合物的分解率及能量利用率,提出采用铁粉辅助微波热激联合降压分解甲烷水合物的方法。设置了4个实验组(微波热激实验组1、铁粉辅助微波热激实验组2、微波热激联合降压实验组3以及铁粉辅助微波热激联合降压实验组4),对预... 详细信息

为了提高甲烷水合物的分解率及能量利用率,提出采用铁粉辅助微波热激联合降压分解甲烷水合物的方法。设置了4个实验组(微波热激实验组1、铁粉辅助微波热激实验组2、微波热激联合降压实验组3以及铁粉辅助微波热激联合降压实验组4),对预先在石英砂中合成的甲烷水合物开展了分解试验,研究了不同试验条件下甲烷水合物的分解特性。研究结果表明:在微波热激作用下,甲烷水合物快速吸收微波能量而迅速分解,前期水合物由微波穿透体积加热的方式分解,中后期由于宏观热传导而分解,且分解前期的平均产气速率和能量效率比均远比分解中期和后期的高,微波的直接体积加热效果比传统加热方法的加热效果好;在微波加热功率相同的条件下,实验组2、实验组3、实验组4都能进一步促进甲烷水合物的分解,且实验组2的分解效果更高,为本研究的最优的分解条件;降压组分解前期的平均产气速率和能量效率比都高于非降压组,中后期的平均产气速率和能量效率均比非降压组的低。在实际应用时,可在水合物分解后期关闭微波,避免过多微波能量的浪费,进一步提高能量效率比。

关键词：甲烷水合物微波热激降压铁粉能量效率比

Generation of Higher Terahertz Harmonics in Nonlinear Paraelectrics under Focusing in a Wide Temperature Range

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Journal of Electromagnetic Analysis and Applications 2023年第4期15卷 43-58页

作者： volodymyr Grimalsky Jesus Escobedo-Alatorre Christian Castrejon-Martinez Yered Gomez-Badillo Center for Investigations on Engineering and Applied Science (CIICAp) Institute for Investigations on Basic and Applied Science (IICBA) Autonomous University of State Morelos (UAEM) Cuernavaca Mor. Mexico Tecnológico Nacional de México/Instituto Tecnológico de Zacatepec Zacatepec Mor. Mexico

It is theoretically investigated the generation of higher harmonics of two-dimensional and three-dimensional terahertz electromagnetic beams in nonlinear crystals. The attention is paid to crystalline paraelectrics like SrTiO3 under the temperatures 60 - 200 K, these crystals possess the cubic nonlinearity. The bias electric field is applied to provide the dominating quadratic nonlinearity. The initial focusing of the beams not only increases the efficiency of generation of higher harmonics, but alto makes possible to select maxima of different higher harmonics at some distances from the input. At lower temperatures the nonlinearity behaves at smaller input amplitudes, whereas at higher temperatures the harmonic generation can be observed at higher frequencies up to 1.5 THz. In three-dimensional beams the peak amplitudes of higher harmonics can be bigger than in two-dimensional beams, but the ratios of these peak values to the maximum values of the focused first harmonic are smaller than in two-dimensional beams.

关键词： Terahertz Wave Beams Nonlinear Crystalline Paraelectrics Different Temperatures Generation of Harmonics Initial Focusing

Digital holography as metrology tool at micronanoscale for soft matter

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Light(Advanced Manufacturing) 2022年第1期3卷 128-153页

作者： Zhe Wang Lisa Miccio Sara Coppola Vittorio Bianco Pasquale Memmolo volodymyr Tkachenko Vincenzo Ferraro Ernesto Di Maio Pier Luca Maffettone Pietro Ferraro CNR-ISASI Institute of Applied Sciences and Intelligent Systems"E.Caianiello"Via Campi Flegrei 3480078 PozzuoliNapoliItaly Dipartimento di Ingegneria Chimica dei Materiali e della Produzione Industriale Universitàdegli Studi di Napoli"Federico II"Piazzale Tecchio 8080125 NapoliItaly NEAPoLIS Numerical and Experimental Advanced Program on Liquids and Interface SystemsJoint Research Center CNR Universitàdegli Studi di Napoli"Federico II"NapoliItaly

The appearance of the first laser approximately 12 years after the invention of holography by Gabor(1948)revolutionized the field of optical *** fact,the invention of holographic interferometry enabled the exploitation of interferometry on non-mirror surfaces and full-scale *** holography-based measurement methods has been implemented to several industrial systems or in support of R&D with the aim of improving new products in many fields(automotive,aerospace,electronics,etc.).To date,holography has been considered an important measurement tool for non-destructive inspection(NDI),strain-stress measurement,and vibration analysis at various engineering ***,the new paradigm of Industry4.0 has seen the introduction of new technologies and methods of processing materials as well as the development of manufacturing approaches for the realization of innovative *** example,direct printing,additive,and bottom-up manufacturing processes are expected to involve new ways of making products in future,and most innovative fabrication processes will be based on the manipulation of soft matter(e.g.,starting from the liquid phase)that will be shaped at the *** inherent characteristics of digital holography(DH)make it a powerful and accurate tool for the visualization and testing of final products,as well as for in situ and real-time monitoring and quantitative characterization of the processes involved during the fabrication *** review aims to report on the most useful applications of soft matter,where the capabilities offered by DH,such as three-dimensional(3D)imaging,extended focus,3D tracking,full-field analysis,high sensitivity,and a wide range of measurements from nanometers to centimeters,permit completely non-invasive characterizations on a *** holographic experimental results of typical samples are reported and discussed where DH plays a primary role as a tool gauge for soft matter.

关键词： Digital holography Soft matter Microscopy Thin film Polymers Liquids Characterization Interferometry Inkjet printing

A method for optimization of time intervals between rolling cuts on sorting humps

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Journal of Modern Transportation 2018年第3期26卷 189-199页

作者： Dmytro Kozachenko volodymyr Bobrovsky Yevhen Demchenko Research and Development Department Dnipropetrovsk National University of Railway Transport Named After Academician V.LazaryanDnipro 49010Ukraine Stations and Junctions Department Dnipropetrovsk National University of Railway Transport Named After Academician V.LazaryanDnipro 49010Ukraine

Sorting humps are the main technical means providing the breaking- and making-up of freight trains. Automation of sorting process by implementing microprocessor control systems is the main direction ofincreasing hump yard capacity, enhancement of safety in trains breaking-up, improvement of working conditions on hump yards. However, for wider introduction of such systems at the humps, it is necessary to reduce their cost. One of the main tasks of hump control systems is the determination of the optimal cars exit speeds from the retarders. Its solution is significantly complicated because of the uncertainty of cars rolling resistance coefficient, wind velocity and direction, retarder control errors. The paper is aimed at solving the problem of searching for such cars exit speeds from the retarders that provide the longest time intervals between them at the switches. Implementation of this method will make it possible to improve the quality of sorting process as a whole by improving the software of microprocessor control systems for automatic humping, rather than by increasing their technical facilities, which as a result will reduce the cost of their construction and operation. The research results, when solving the problem of searching for cars exit speeds from the retarders, allow us to move from searching for the maximum of a nonlinear non-smooth function of two variables to solution of an equation with one variable, which significantlyaccelerates and simplifies the solution to the problem.

关键词： Railways Sorting hump Optimization Marshalling yard

LaMgNi系储氢合金相变过程中的原位中子衍射研究

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LaMgNi系储氢合金相变过程中的原位中子衍射研究

Lignite oxidative desulphurization: notice 3-process technological aspects and application of products

中国稀土学会第四届青年学术会议

作者：万初斌 volodymyr A.Yartys 巨新北京科技大学数理学院挪威能源技术研究所IFE能源系统部

目前的新能源汽车以锂电作为主流,但与锂离子电池相比,镍氢电池具有价格低廉,通用性强,放电电流大,环保稳定,使用安全等优点,因此镍氢电池将是新能源汽车动力电池的重要选择之一。以储氢合金为负极材料的镍氢电池(Ni-MH)已引起了人们广... 详细信息

目前的新能源汽车以锂电作为主流,但与锂离子电池相比,镍氢电池具有价格低廉,通用性强,放电电流大,环保稳定,使用安全等优点,因此镍氢电池将是新能源汽车动力电池的重要选择之一。以储氢合金为负极材料的镍氢电池(Ni-MH)已引起了人们广泛的关注,并且已经在产业方面取得了重大的突破,目前可用于便携电子设备,电动自行车、小轿车和公交车等。镍氢电池的效率取决于负极材料,即储氢合金的吸放氢性能和电化学性能。针对第三代镍氢电池负极材料La-Mg-Ni合金体系,研究表明La-Mg-Ni体系合金具备高容量吸放氢能力和充放电能力稳定性,成为近些年国内外学者研究的焦点。研究以AB型LaY MgNi合金材料为对象,利用原位高分辨中子衍射技术,研究La-Mg-Ni合金材料在300-1273K温度范围下,组成相的结构信息和相平衡状态,获得包晶反应和温度之间的关系;研究La-Mg-Ni合金氢化物的晶体结构,确认氢原子金属原子在结构中的位置和占位等重要信息。同时结合电化学和吸放氢性能测试,开发出电池性能优异的La-Mg-Ni电池负极材料。高分辨粉末中子衍射数据Rietveld结构精修观察该材料体系在300 K到1273 K温度范围下的晶体组成相,获得了各La-Mg-Ni金属间化合物的熔点,获得相结构与温度之间的关系;研究Mg元素对相平衡和化合物的熔点的影响,Mg含量增加导致AB熔点升高,AB熔点的降低;获得了La-Y-Mg-Ni合金及其氢化物的晶体结构信息。

关键词： LaMgNi 稀土储氢合金中子衍射晶体结构电化学性能

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International Journal of Coal Science & Technology 2019年第1期6卷 63-73页

作者： volodymyr Gunka Mariia Shved Yuriy Prysiazhnyi Serhiy Pyshyev Denis Miroshnichenko Lviv Polytecnic National University 12 Bandery Str. L'viv 79013Ukraine National Technical University “Kharkiv Polytechnic Inslilute” 2 Kyrpychova Str.Kharkiv 61002Ukraine

The study reviews the process of oxidative desulphurization of high-sulphur Ukrainian lignite, which was performed by coal treatment using an air or air-steam mixture. In the process. sulphur-free fuel and tar from the decomposition of coal organic matter was obtained. Hence, the sulphur in the coal was converted inlo hydrogen sulphide. The coal desulphurization process is critical to power generatio n. power generation and technology, and tech no logy field of application. The coal desulphurization process ensures the maximum recovery of the highest content of sulphur and hydrogen sulphide (H2S) in desulphurized gases at minimal energy costs. The process also enhances the maximum decomposition of tar and sulphur recovery (> 50%) during coal power generation. Based on smnniarized field studies, a block schematic diagram coupled with heat and material balances of the process was developed for the calculations. The application of the tech no logy at the first stage of coal combustion in thermal power plants will en able the utilizatio n of over 50% of recovered coal sulphur in the form of concentrated H2S or commercial elemental sulphur. This will, nevertheless, allow for a reduction of sulphur oxide pollution in the environment by at least 53%-56%. It has been suggested that the product of thermal decomposition of coal organic matter (tar) can be used as a componenl of fumace fuel oil or as a plasticizer of petroleum-based road bitumen.

关键词： Lignite Oxidative desulphurization Sulphur Hydrogen sulphide

Effect of oxygen content on the structural and optical properties of ZnO films grown by atmospheric pressure MOCVD

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Progress in Natural Science:Materials International 2013年第1期23卷 44-50页

作者： Sajjad Hussain Yaqoob Khan volodymyr Khranovskyy Riaz Muhammad Rositza Yakimova Department of Applied Physics Federal Urdu University of ArtsScience and TechnologyIslamabadPakistan Nanosciences and Catalysis Division National Centre for PhysicsQuaid-e-Azam University Campus45320 IslamabadPakistan Department of Physics Chemistryand Biology(IFM)Linkǒping UniversityLinkǒping SE-581 83Sweden

Atmospheric pressure MOCVD was used to deposit ZnO layers on sapphire and homoepitaxial template under different oxygen flow *** content affects the lattice constant value and texture coefficient of the films as evidenced by the θ-2θ peaks position and their *** deposited at lower oxygen flow rate possess higher value of strain and *** films deposited at high oxygen flow rates show intense UV emissions while samples prepared under oxygen deficient conditions exhibited defect related emission along with UV *** results are compared to the ZnO films deposited homoepitaxially on annealed ZnO *** data obtained suggest that ZnO stoichiometry is responsible for the structural and optical quality of ZnO films.

关键词： APMOCVD XRD PL Near-band-edge(NBE)