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Giant resonant light forces in microspherical photonics

Light(Science & Applications) 2013年第1期2卷 176-183页

作者： Yangcheng Li Oleksiy V Svitelskiy alexey V Maslov David Carnegie Edik Rafailov Vasily n Astratov Department of Physics and Optical Science Center for Optoelectronics and Optical CommunicationUniversity of North Carolina at CharlotteCharlotteNC 28223-0001USA Department of Radiophysics University of Nizhny NovgorodNizhny Novgorod 603950Russia Photonics and nanoscience Group School of Electrical Engineering and PhysicsUniversity of DundeeNethergateDundee DD14HNUK Colgate University HamiltonNY 13346USA

Resonant light pressure effects can open new degrees of freedom in optical manipulation with microparticles,but they have been traditionally considered as relatively subtle *** a simplified two-dimensional model of surface electromagnetic waves evanescently coupled to whispering gallery modes(WGMs)in transparent circular cavities,we show that under resonant conditions the peaks of the optical forces can approach theoretical limits imposed by the momentum conservation law on totally absorbing ***,we proved the existence of strong peaks of the optical forces by studying the optical propulsion of dielectric microspheres along tapered *** observed giant optical propelling velocities,0.45 mm s21 for some of the 15-20 mm polystyrene microspheres in water for guided powers limited at,43 *** velocities exceed previous observations by more than an order of magnitude,thereby providing evidence for the strongly enhanced resonant optical *** analyzed the statistical properties of the velocity distribution function measured for slightly disordered(,1%size variations)ensembles of microspheres with mean diameters varying from 3 to 20 *** results demonstrate a principal possibility of optical sorting of microspheres with the positions of WGM resonances overlapped at the wavelength of the laser *** can be used as building blocks of the lossless coupled resonator optical waveguides and various integrated optoelectronics devices.

关键词： optical propulsion optical forces whispering gallery modes microspheres evanescent coupling

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Forces of RBC interaction with single endothelial cells in stationary conditions:Measurements with laser tweezers

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Journal of Innovative Optical Health Sciences 2021年第5期4卷 53-63页

作者： Arseniy A.Kapkov alexey n.Semenov Petr B.Ermolinskiy Andrei E.Lugovtsov Alexander V.Priezzhev Faculty of Physics Lomonosov Moscow State UniversityLeninskie GoryMoscow 119991Russia Faculty of Biology Lomonosov Moscow State UniversityLeninskie GoryMoscow 119991Russia

Red blood cells(RBCs)are able to interact and communicate with endothelial cells(ECs).Under some pathological or even normal conditions,the adhesion of RBCs to the endothelium can be ***,the mechanisms and many aspects of the interaction between RBCs and ECs are not fully *** this work,we considered the interaction of single RBCs with single ECs in vitro aiming to quantitatively determine the force of this interaction using laser *** were performed under different concentrations of proaggregant macromolecules and in the presence or absence of tumor necrosis factor(TnF-α)activating the *** have shown that the strength of interaction depends on the concentration of fibrinogen or dextran proaggregant macromolecules in the environment.A nonlinear increase in the force of cells interaction(from 0.4 pn to 21 pn)was observed along with an increase in the fibrinogen con-centration(from 3 mg/mL to 9 mg/mL)in blood plasma,as well as with the addition of dextran macromolecules(from 10 mg/mL to 60 mg/mL).Dextran with a higher molecular mass(500 kDa)enhances the adhesion of RBCs to ECs greater compared to the dextran with a lower molecular mass(70 kDa).With the preliminary activation of ECs with TnF-α,the force of interaction ***,the adhesion of echinocytes to EC compared to discocytes is significantly *** results may help to better understand the process of interaction between RBCs and ECs.

关键词： Endothelial cells red blood cells laser tweezers adhesion

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Traditional taxonomy: Quo vadis?

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Integrative Zoology 2016年第6期11卷 500-505页

作者： alexey A.KOTOV Maria A.GOLOLOBOVA Laboratory of Aquatic Ecology and Invasions A.N.Severtsov Institute of Ecology and EvolutionMoscowRussia Laboratory for Palaeoclimatology Palaeoecology and PalaeomagnetismKazan Federal UniversityKazanRussia Faculty of Biology M.V.Lomonosov Moscow State UniversityMoscowRussia

TRADITIOnAL TAXOnOMY “Taxonomy is the science of naming,describing and classifying organisms and includes all plants,animals and microorganisms of the world”(Convention on Biological Diversity 2016).It is obvious that progress in biological science is impossible without taxonomic ef*** the last 250 years,taxonomists have named almost two million species of animals,plants and mi*** recently taxonomy has entered a deep crisis(Agnarson&Kuntner 2007;Walter&Winterton 2007);in particular,this crisis involves the science of traditional taxonomy.

关键词： taxonomy Taxonomy Diversity

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Euxinia as a dominant process during OAEla(Early Aptian)on the Eastern Russian Platform and during OAElb(Early Albian)in the Middle Caspian

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Science China Earth Sciences 2017年第1期60卷 58-70页

作者： Svetlana O. ZORInA Oksana V. pavlovA Bulat M. GALIULL1n Vladimir P. MOROZOV alexey A. ESKIn Institute of Geology and Petroleum Technologies Kazan Federal University 4/5 Kremlyovskaya street Kazan 420008 Russian Federation

A detailed study of the mineral composition and microstructure of the black shales associated with OAE1 a （Eastern Russian Platform）, OAElb （Middle Caspian）, and the host rocks has been carried out using X-ray diffraction, scanning electron microscopic, and microprobe analyses. The results provide important constraints for depositional environments in the sedimentary basins. Black shales with pyrite framboids imply euxinic （sulfidic） conditions with increased organic matter preservation. Disintegrating framboids suggest partial or complete dissolution of the organic matter inside the framboids due to increasing water oxygenation. OAEla on the Eastern Russian Platform is heterogeneous as it includes thin interbeds of concretionary coccolith limestones within the interval of bituminous shales, and correlates with the Lower Aptian Rhagodiscus angustus nannofossil zone. The coccolith limestones indicate short intermittent episodes of interrupted stagnation, rapid oxygenation, and restoration of normal marine conditions. The presence of montmorillonite, albite, microcline, and diopside in the bituminous siltstones and in the host siltstones of OAEla on the Eastern Russian Platform, as well as a high content of titanium in the black siltstones correlated with OAEIb in the Middle Caspian allow proposing significant input of pyroclastic material into the extant sea.

关键词： OAEIa OAElb Black shales Pyrite framboids Euxinia Oxygenation Eastem Russian Platform MiddleCaspian Cretaceous

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How to stabilize standard perovskite solar cells to withstand operating conditions under an ambient environment for more than 1000 hours using simple and universal encapsulation

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Journal of Energy Chemistry 2023年第3期78卷 246-252,I0008页

作者： nikolai A.Belich Andrey A.Petrov Pavel A.Ivlev natalia n.Udalova Alla A.Pustovalova Eugene A.Goodilin alexey B.Tarasov Laboratory of new Materials for Solar Energetics Faculty of Materials ScienceLomonosov Moscow State University119991 MoscowRussia Department of Chemistry Lomonosov Moscow State University119991 MoscowRussia

We introduce a simple and universal scalable encapsulation strategy for perovskite solar cells based on thermal vacuum evaporation of MgF2or MoO3-xcapping layer followed by sealing the device with glass and UV-curable *** proposed encapsulation method is beneficial to most of the other known encapsulation approaches being fully harmless to perovskite and transporting layers and processible at room *** deposition of the capping layer promotes efficient removal of water,oxygen and organic solvent residuals from the device prior to sealing and could be easily performed using standard equipment for metal electrode *** proposed strategy is transferrable to any lab-scale perovskite solar cell prototypes regardless of their geometry and architecture and results in excellent stability of the devices in ambient air and long operating *** the 1000 hours stability test at ambient air(30%-60% RH),the cells preserved 92.9% of their initial efficiency on average under 1 Sun illumination at constant maximum power point tracking(MPPT,ISOS-L-1) and over 96% under sto rage in the dark(ISOS-D-1),thus evidencing for the high effectiveness of the proposed encapsulation approach.

关键词： Perovskite solar cells Halide perovskites Encapsulation High stability ISOS-L-1

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Pulsed laser reshaping and fragmentation of upconversion nanoparticles-from hexagonal prisms to ID nanorods through“Medusa”-like structures

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nano Research 2021年第4期14卷 1141-1148页

作者： Laszlo Sajti Denis n.Karimov Vasilina V.Rocheva nataliya A.Arkharova Kirill V.Khaydukov Oleg I.Lebedev alexey E.Voloshin Alla n.Generalova Boris n.Chichkov Evgeny V.Khaydukov AIT Austrian Institute of Technology GmbH Wiener Neustadt2700Austria Federal Scientific Research Centre“Crystallography and Photonics”Russian Academy of Sciences Moscow119333Russia Laboratoire CRISMAT UMR6508CNRS-ENSIACENUniversite CaenCaen14050France Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences Moscow 117997Russia Institutfiir Quantenoptik Leibniz Universitat HannoverHannover30167Germany Center of Biomedical Engineering Institute of Molecular Medicine Sechenov First Moscow State Medical UniversityMoscow119991Russia

One dimensional(1D)nanostructures attract considerable attention,enabling a broad application owing to their unique ***,the precise mechanism of 1D morphology attainment remains a matter of *** this study,ultrafast picosecond(ps)laser-induced treatment on upconversion nanoparticles(UCnPs)is offered as a tool for 1 D-nanostructures ***,reshaping through recrystallization process and bioadaptation of initially hydrophobic(β-na_(1.5)Y_(1.5_)F_(6):Yb^(3+),Tm^(3+)/β-na_(1.5)Y_(1.5_)F_(6))core/shell nanoparticles by means of one-step laser treatment in water are demonstrated.“True”1D nanostructures through"Medusa^-like structures can be obtained,maintaining anti-Stokes luminescence functionalities.A matter of the one-dimensional UCnPs based on direction of energy migration processes is *** proposed laser treatment approach is suitable for fast UCnP surface modification and nano-to-nano transformation,that open unique opportunities to expand UCnP applications in industry and biomedicine.

关键词： upconversion nanoparticles fluoride crystals upconversion nanorods one-dimensional(1D)structures laser-induced reshaping

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通过新型轻量化参数优化方法比较激光选区熔化部件设计的不同细胞结构（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2019年第2期20卷 117-132页

作者： Rubén PAZ Mario D.MOnZón Philippe BERTRAnD alexey SOVA Universidad de Las Palmas de Gran Canaria Departamento de Ingeniería Mecánica University of Lyon ENISE

目的:1.提出一种在外型不变的部件内模拟不同细胞结构的方法;2.发展激光选区熔化(SLM)部件轻量化参数设计的新方法;3.利用这一方案实现优化设计并比较不同细胞结构的质量。创新点:1.提出基于拉丁超立方实验设计、遗传算法、克里金元模... 详细信息

目的:1.提出一种在外型不变的部件内模拟不同细胞结构的方法;2.发展激光选区熔化(SLM)部件轻量化参数设计的新方法;3.利用这一方案实现优化设计并比较不同细胞结构的质量。创新点:1.提出基于拉丁超立方实验设计、遗传算法、克里金元模型和有限元方法的轻量化优化方案;2.该方法可通过较少的采样获得良好的结果并能克服几何奇点(内部网格细化算法)的问题。方法:1.进行内部细胞结构的生成和参数化;2.根据输入数据(设计变量和约束条件等)采用拉丁超立方实验设计模拟所选样本;3.利用先前的数据创建克里金元模型并利用预测的元模型来计算遗传算法演化过程中的适应函数;4.将模拟实现的优化结果添加到数据中更新元模型,并通过数次重复迭代提高元模型的准确度直至误差小于5%;5.将这一概念应用于不同的几何结构,然后通过SLM加工制造优化后的几何结构,并在弯曲载荷下进行测试。结论:1.该优化算法通过适当的参数化克服了SLM技术的相关限制,可适用于SLM部件的优化;2.立方单元格在计算机辅助设计定义、参数化和时间优化等方面有一些优势,但和有限元分析的估计结果相比,其存在的缺乏坚实支撑的水平条(悬挂结构)会造成机械性能损失;3.将立方单元结构与用户自定义的参数化增强相结合可以得到更有效的设计结果(更高的比刚度),但更多的设计变量也延长了所需要的优化时间。

关键词：参数优化细胞结构激光选区熔化有限元分析实验设计精细化

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Quantification of glucose and glycerol diffusion in myocardium

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Journal of Innovative Optical Health Sciences 2015年第3期8卷 46-55页

作者： Daria K.Tuchina alexey n.Bashkatov Elina A.Genina Valery V.Tuchin Research-Educational Institute of Optics and Biophotonics Saratov State University Saratov 410012Russia Laboratory of Laser Diagnostics of Technical and Living Systems Institute of Precise Mechanics and Control RAS Saratov 410028 Russia Optoelectronics and Measurement Techniques Laboratory P.O.Box 4500 University of Oulu FIN-90014OuluFinland

The results on determination of glucose and glycerol difusion cofficients in myocardium tissuse are *** method is based on the measurement and analysis of temporal dependence of tissue optical collimated transmittance umder action of a hyperosmotic *** temporal tissue response is related to the rate of the agent and water diffusion in a *** diffusion coefficients for tssue fAuid fluxes at glucose and glycerol application to the myocardium at 20℃ have been estimated as(4.75±3.40)×10^(-7) and(7.71±4.63)×10^(-7) cm^(2)/s,respectively.

关键词： Difusion cofficient optical clearing delhydration scattering.

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Preliminary analyses of the frozen mummies of mammoth(Mammuthus primigenius),bison(Bison priscus)and horse(Equus sp.)from the Yana-Indigirka Lowland,Yakutia,Russia

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Integrative Zoology 2014年第4期9卷 471-480页

作者： Gennady G.BOESKOROV Olga R.POTAPOVA Eugeny n.MASHCHEnKO Albert V.PROTOPOPOV Tatyana V.KUZnETSOVA Larry AGEnBROAD alexey n.TIKHOnOV Diamond and Precious Metal Geology Institute Siberian Branch of Russian Academy of SciencesYakutskRussia The Mammoth Site of Hot Springs Museum Hot SpringsSouth DakotaUSA Paleontological Institute Russian Academy of SciencesMoscowRussia Department of the Mammoth Fauna Studies Academy of Sciences of the Sakha(Yakutia)Republic YakutskRussia M.V.Lomonosov Moscow State University MoscowRussia Zoological Institute Russian Academy of SciencesSt.PetersburgRussia

The frozen bodies of a young woolly mammoth(Mammuthus primigenius),a wild horse(Equus sp.)and a steppe bison(Bison priscus)were recently found in the northern Yakutia(northeastern Siberia).All specimens have preserved bones,skin and soft *** the woolly mammoth and the Pleistocene horse were represented by partial frozen bodies,the steppe bison body was recovered in an absolutely complete *** specimens were found frozen in the permafrost,with some of the tissues *** wild horse and steppe bison are of Holocene age,and the mammoth is of Late Pleistocene age.

关键词： bison horse mammoth mummy Siberia

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Silica-based nanoarchitecture for an optimal combination of photothermal and chemodynamic therapy functions of Cu2–xS cores with red emitting carbon dots

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Frontiers of Chemical Science and Engineering 2023年第12期17卷 2144-2155页

作者： alexey Stepanov Svetlana Fedorenko Kirill Kholin Irek nizameev alexey Dovzhenko Rustem Zairov Tatiana Gerasimova Alexandra Voloshina Anna Lyubina Guzel Sibgatullina Dmitry Samigullin Asiya Mustafina Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center of RASKazan 420088Russia Department of Physics Kazan National Research Technological UniversityKazan 420015Russia Department of nanotechnology in Electronics Kazan National Research Technical University named after A.N.Tupolev-KAIKazan 420111Russia Kazan(Volga region)Federal University Kazan 420008Russia Kazan Institute of Biochemistry and Biophysics FRC Kazan Scientific Center of RASKazan 420111Russia

This study introduces multifunctional silica nanoparticles that exhibit both high photothermal and chemodynamic therapeutic activities,in addition to *** activity of the silica nanoparticles is derived from their plasmonic properties,which are a result of infusing the silica nanoparticles with multiple Cu2-xS *** infusion process is facilitated by a recoating of the silica nanoparticles with a cationic *** key factors that enable the internal incorporation of the Cu2-xS cores and the external deposition of red-emitting carbon dots are *** Cu2-xS cores within the silica nanoparticles exhibit both self-boosting generation of reactive oxygen species and high photothermal conversion efficacy,which are essential for photothermal and chemodynamic *** silica nanoparticles’small size(no more than 70 nm)and high colloidal stability are prerequisites for their cell *** internalization of the red-emitting silica nanoparticles within cells is visualized using fluorescence microscopy *** chemodynamic activity of the silica nanoparticles is associated with their dark cytotoxicity,and the mechanisms of cell death are evaluated using an apoptotic *** photothermal activity of the silica nanoparticles is demonstrated by significant cell death under near-infrared(1064 nm)irradiation.

关键词： copper sulfide nanoparticles chemodynamic therapy photothermal therapy carbon dots silica nanoparticles

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