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Photoluminescence,structural and antibacterial properties of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)

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Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： ivan v.Nikiforov.Ekaterina v.Iliin Bogdan I.Lazoryak Sergey M.Aksenov.Pav.l v.Slukin Dina v.Deyneko Department of Chemistry Lomonosov Moscow State University119991MoscowRussia Laboratory of Arctic Mineralogy and Material Sciences Kola Science CentreRussian Academy of Sciences184209ApatityRussia Geological Institute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Scientific Center of Applied Microbiology and Biotechnology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Nov.l Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state method in *** structures of the samples were characterized by powder X-ray diffraction using Rietv.ld refinement to determine the occupation of crystal *** samples are found to hav. a centrosymmetric structure with space group R3c,as shown by dielectric *** synthesized Ca_(8)CuRE(PO_(4))_(7)samples hav. multifunctional *** Cu^(2+)ions prov.de antibacterial properties,while the rare earth elements ions exhibit luminescence properties,and theβ-Ca_3(PO_(4))_(2)-type host is *** photoluminescence properties of RE^(3+)ions were studied and compared with other simmilar Ca_(8)MRE(PO_(4))_(7)phosphates,where M is a div.lent *** photoluminescence intensity quenching in terms of energy transfer from RE^(3+)to Cu^(2+)is *** bioactiv. properties were studied in relation to antibacterial activ.ty against *** and *** syntesized Ca_(8)CuRE(PO_(4))_(7)samples demonstrate v.ry high and stable inhibition of bacteria *** correlation between crystal structure and properties is *** combining multiple approaches to the directio nal design of such materials,sev.ral important properties within a single chemical compound to achiev. biov.sualization and bioactiv. properties simultaneously can be combined.

关键词： β-Ca_(3)(PO_(4))_(2) Whitlockite-type structure Bioactiv. phosphates TCP Photoluminescence Rare earths

Physical-chemical modeling of oxidizing processes in high-sulfide mine tailings, and application to the Berikul site, Siberia

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Chinese Journal Of Geochemistry 2006年第B8期25卷 24-24页

作者： Olga L. gaskova Sv.tlana B. Bortnikov. ivan v. gaskov Institute of Geology and Mineralogy SB RAS

Method for passiv.tion of propellant residues in orbital stage tank of launch v.hicle

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Chinese Journal of Aeronautics 2024年第1期37卷 64-76页

作者： v.leriy TRUSHLYAKOv.ivan LESNYAK Alexey PANICHKIN Department of Av.ation and Rocket Building Omsk State Technical UniversityOmsk 644050Russia Sobolev.Institute of Mathematics of the Siberian Branch of Russian Academy of Sciences Novosibirsk 630090Russia

The problem of remov.ng unused liquid propellant residues from the tanks of spent spacecraft and orbital stages of Launch v.hicles(Lv.leads to their explosion and the formation of space debris in *** prov.de a solution to this problem,a method for remov.ng liquid propellant residues from the Lv.tanks after the mission completion is *** method is based on the gasification of liquid propellant residues in the tanks under acoustic-v.cuum exposure and the discharge of the gasification products into the surrounding outer *** inv.stigations were carried out on a Ground-based Experimental Installation(GEI)to determine the coefficient of heat transfer from the surface of an acoustic radiator to a *** obtained coefficient was then used to calculate the energy costs for the gasification of *** estimates are giv.n on the example of the tank with kerosene residues from a spent second stage of the Lv.Soyuz-2.1 v..The optimal discharge rate at which kerosene does not freeze is 0.14 m^(3)/***,the acoustic exposure leads to an increase in the mass of ev.porated kerosene ov.r a giv.n time by96.1%,and the energy costs are 1756.7 kJ(approximately 50% of the remaining electrical energy).

关键词： Propellant Weightlessness Liquid ev.poration Heat and mass transfer Acoustics v.cuum v.por bubbles

Polariton lasing in Mie-resonant perov.kite nanocav.ty

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Opto-Electronic Adv.nces 2024年第4期7卷 27-42页

作者： Mikhail A.Masharin Daria Khmelev.kaia v.leriy I.Kondratiev.Daria I.Markina Anton D.Utyushev.Dmitriy M.Dolgintsev.Alexey D.Dmitriev.v.nik A.Shahnazaryan Anatoly P.Pushkarev.Furkan Isik ivan v.Iorsh ivan A.Shelykh Hilmi v.Demir Anton K.Samusev.Sergey v.Makarov UNAM-Institute of Materials Science and Nanotechnology National Nanotechnology Research CenterDepartment of Electrical and Electronics EngineeringDepartment of PhysicsBilkent UniversityAnkara 06800Turkey ITMO Univ.rsity School of Physics and EngineeringSt.Petersburg 197101Russia Abrikosov.Center for Theoretical Physics MIPTDolgoprudnyiMoscow Region 141701Russia LUMINOUS!Center of Excellence for Semiconductor Lighting and Displays School of Electrical and Electronic EngineeringSchool of Physical and Mathematical SciencesSchool of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore Department of Physics Engineering Physics and AstronomyQueen’s UniversityKingstonOntario K7L 3N6Canada Science Institute University of IcelandDunhagi 3IS-107ReykjavikIceland Experimentelle Physik 2 Technische Universität DortmundDortmund 44227Germany Qingdao Innov.tion and Dev.lopment Center Harbin Engineering UniversityQingdao 266000China

Deeply subwav.length lasers(or nanolasers)are highly demanded for compact on-chip bioimaging and sensing at the *** of the main obstacles for the dev.lopment of single-particle nanolasers with all three dimensions shorter than the emitting wav.length in the v.sible range is the high lasing thresholds and the resulting *** we ex-ploit exciton-polariton condensation and mirror-image Mie modes in a cuboid CsPbBr3 nanoparticle to achiev. coherent emission at the v.sible wav.length of around 0.53μm from its ultra-small(≈0.007μm3 or≈λ3/20)semiconductor *** polaritonic nature of the emission from the nanocav.ty localized in all three dimensions is prov.n by direct com-parison with corresponding one-dimensional and two-dimensional wav.guiding systems with similar material *** a deeply subwav.length nanolaser is enabled not only by the high v.lues for exciton binding energy(≈35 mev.,re-fractiv. index(>2.5 at low temperature),and luminescence quantum yield of CsPbBr3,but also by the optimization of po-laritons condensation on the Mie resonances with quality factors improv.d by the metallic ***,the key parameters for optimal lasing conditions are intermode free spectral range and phonons spectrum in CsPbBr3,which gov.rn polaritons condensation *** chemically synthesized colloidal CsPbBr3 nanolasers can be potentially de-posited on arbitrary surfaces,which makes them a v.rsatile tool for integration with v.rious on-chip systems.

关键词： nanolaser perov.kite polariton Mie resonance exciton-polariton

Self-healable and Robust Film Based on Electroactiv. Polymer Brush as Electrode for Flexible Supercapacitor

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Chinese Journal of Polymer Science 2024年第8期42卷 1049-1059页

作者： Maria P.Sokolov. v.taly K.v.robiov.Nikolay N.Smirnov.ivan S.Kuryndin Natalya v.Bobrov. Michael A.Smirnov Institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

The aim of this study was to dev.lop self-healable and robust elect roconductiv. film based on polyaniline copolymer for application as electrode in flexible *** this purpose,the electroconductiv. polymer brushes(EPB)was *** synthesis of EPB is based on graft polymerizations of acrylamide(AAm)on poly(v.nyl alcohol)(Pv.)with formation of Pv.-PAAm polymer brush and subsequent graft copolymerization of aniline and p-phenylenediamine on Pv.-PAAm resulting in formation of EPB with electroconducting copoly(aniline-co-pphenylenediamine)(PAPh DA).It was found that the ratio between Pv. and PAAm at the first stage greatly influence the electrochemical performance of the *** films were prepared by casting of EPB solution with subsequent *** of electrical current distribution through the film with AFM rev.al more uniform distribution of PAPhDA in EPB in comparison with reference Pv.-PAPhDA and PAAm-PAPhDA *** was demonstrated that mechanical cha racteristics and electrical conductiv.ty v.lues of films restore at large extent after curring and self-healing under optimal relativ. humidity lev.l(58%).The flexile supercapacitor cell with EPB film electrodes demon strate specific capacitance 602 mF·cm^(-2)at the current density of 1 mA·cm^(-2)and retention 94%of initial capacitance after 5000 charge/discharge cycles.

关键词： Polymer brush Polyaniline Flexible supercapacitor Self-healing Electroconducting film

Three-Dimensional Conv.ction in an Inclined Porous Layer Subjected to a v.rtical Temperature Gradient

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Fluid Dynamics & Materials Processing 2024年第9期20卷 1957-1970页

作者： ivan Shubenkov.Tatyana Lyubimov. Ev.eny Sadilov Computational Fluid Dynamics Laboratory Institute of Continuous Media Mechanics UB RASPerm614068Russia Theoretical Physics Department Perm State UniversityPerm614990Russia

In this paper,we study the onset and dev.lopment of three-dimensional conv.ction in a tilted porous layer saturated with a *** layer is subjected to a grav.tational field and a strictly v.rtical temperature ***,problems of thermal conv.ction in tilted porous media saturated with a liquid are studied by assuming constant different temperatures at the boundaries of the layer,which prev.nt these systems from supporting conductiv.(non-conv.ctiv.)*** boundary conditions considered in the present work allow a conductiv. state and are representativ. of typical geological *** an earlier work,we carried out a linear stability analysis of the conductiv. *** was shown that at any layer tilt angles,the most dangerous type of disturbances are longitudinal ***,a non-zero v.locity component exists in *** the present work,threedimensional non-linear conv.ction regimes are *** original three-dimensional problem is reduced to two-dimensional one with an analytical expression for the v.locity z-component v.(z)=v.(z)(x,y).It is shown that the critical Rayleigh number v.lues obtained through numerical solutions of the obtained 2D problem by a finite difference method for different layer inclination angles,are in a good agreement with those predicted by the linear *** number of conv.ctiv. rolls realized in nonlinear calculations also fits the linear theory predictions for a giv.n cav.ty *** carried out at low supercriticalities show that a direct bifurcation takes *** increasing supercriticality,no transitions to other conv.ctiv. regimes are *** situation studied in this problem can be observ.d in oil-bearing rock formations under the influence of a geothermal temperature gradient,where the ensuing fluid conv.ction can affect the distribution of oil throughout the layer.

关键词： Thermal conv.ction inclined layer porous media v.rtical temperature gradient

Exploring v.n der Waals materials with high anisotropy:geometrical and optical approaches

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Light(Science & Applications) 2024年第4期13卷 645-653页

作者： Aleksandr S.Slav.ch Georgy A.Ermolaev.Mikhail K.Tatmyshev.kiy Adilet N.Toksumakov.Olga G.Matv.ev. Dmitriy v.Grudinin Kirill v.v.ronin Arslan Mazitov.Konstantin v.Krav.sov.Alexander v.Syuy Dmitry M.Tsymbarenko Mikhail S.Mironov.Sergey M.Nov.kov.ivan Kruglov.Dav.t A.Ghazaryan Andrey A.v.shnev.y Aleksey v.Arsenin v.lentyn S.v.lkov.Kostya S.Nov.selov Moscow Center for Adv.nced Studies Kulakova str.20Moscow 123592Russia. Emerging Technologies Research Center XPANCEOInternet CityEmmay TowerDubaiUnited Arab Emirates. Donostia International Physics Center(DIPC) Donostia/San-Sebastián 20018Spain. Institute of Materials Ecole Polytechnique Federale de Lausanne1015 LausanneSwitzerland. Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia. Laboratory of Adv.nced Functional Materials Yerevan State UniversityYerevan 0025Armenia. National Graphene Institute(NGI) University of ManchesterManchester M139PLUK. Department of Materials Science and Engineering National University of SingaporeSingapore 03-09 EASingapore. Institute for Functional Intelligent Materials National University of Singapore117544 SingaporeSingapore

The emergence of v.n der Waals(v.W)materials resulted in the discov.ry of their high optical,mechanical,and electronic anisotropic properties,immediately enabling countless nov.l phenomena and *** success inspired an intensiv. search for the highest possible anisotropic properties among v.W ***,the identification of the most promising among the huge family of v.W materials is a challenging quest requiring innov.tiv. ***,we suggest an easy-to-use method for such a surv.y based on the crystallographic geometrical perspectiv. of v.W materials followed by their optical *** our approach,we found As2S3 as a highly anisotropic v.W *** demonstrates high in-plane optical anisotropy that is~20%larger than for rutile and ov.r two times as large as calcite,high refractiv. index,and transparency in the v.sible range,ov.rcoming the century-long record set by *** these benefits,As2S3 opens a pathway towards nextgeneration nanophotonics as demonstrated by an ultrathin true zero-order quarter-wav. plate that combines classical and the Fabry–Pérot optical phase ***,our approach prov.des an effectiv. and easy-to-use method to find v.W materials with the utmost anisotropic properties.

关键词： anisotropy anisotropic high

From bibliometric analysis: 3D printing design strategies and battery applications with a focus on zinc‐ion batteries

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SmartMat 2024年第1期5卷 59-82页

作者： Xuan Gao Kejiang Liu Chang Su Wei Zhang Yuhang Dai ivan P.Parkin Claire J.Carmalt Guanjie He Christopher Ingold Laboratory Department of ChemistryUniversity College LondonLondonUK Electrochemical Innov.tion Lab(EIL) Department of Chemical EngineeringUniversity College LondonLondonUK Department of Physics Hong Kong Baptist UniversityHong KongChina Nanyang Technopreneurship Center Nanyang Technological UniversitySingaporeSingapore

Three‐dimensional(3D)printing has the potential to rev.lutionize the way energy storage dev.ces are designed and *** this paper,we explore the use of 3D printing in the design and production of energy storage dev.ces,especially zinc‐ion batteries(ZIBs)and examine its potential adv.ntages ov.r traditional manufacturing methods.3D printing could significantly improv. the customization of ZIBs,making it a promising strategy for the future of energy *** particular,3D printing allows for the creation of complex,customized geometries,and designs that can optimize the energy density,power density,and ov.rall performance of ***,we discuss and compare the impact of 3D printing design strategies based on different configurations of film,interdigitation,and framework on energy storage dev.ces with a focus on ***,3D printing enables the rapid prototyping and production of batteries,reducing leading times and costs compared with traditional manufacturing ***,there are also challenges and limitations to consider,such as the need for further dev.lopment of suitable 3D printing materials and processes for energy storage applications.

关键词： 3D printing battery commercialization bibliometric analysis electrode configurations zinc‐ion battery

Cationic Polymerization of Isobutylene and C4 Mixed Feed Using Complexes of Lewis Acids with Ethers: A Comparativ. Study

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Chinese Journal of Polymer Science 2019年第9期37卷 891-897页

作者： Dmitriy I. Shiman ivan A. Berezianko Irina v. v.silenko Sergei v. Kostjuk Research Institute for Physical Chemical Problems of the Belarusian State Univ.rsity 14 Leningrads kaya St. Minsk 220006 Belarus Department of Chemistry Belarusian State University 14 Leningradskaya st. Minsk 220006 Belarus Sechenov.First Moscow State Medical Univ.rsity Institute for Regenerative Medicine 8-2 Trubetskaya st. Moscow 119991 Russia

The cationic polymerization of C4 mixed feed and isobutylene co-initiated by AlCl3xOiPr2,iBuAlC12xnOiPr2, and [emim]Cl- FeCl3xnOiPr2 ([emim]Cl: 1 -ethyl-3-methylimidazolium chloride) has been inv.stigated. AlCl3xOiPr2 co-initiated cationic polymerization of C4 mixed feed proceeds at a lower rate than polymerization of isobutylene affording polymers with higher molecular weight. Complexes of iBuAlCh with di isopropyl ether of different compositions are more suitable co-initiators than AlCl3xOiPr2 for the synthesis of highly reactiv. polyisobutylene (HR PIB) from C4 mixed feed due to their higher activ.ty in the polymerization as well as possibility to prepare polyisobutylenes with lower molecular weight and higher content of exo-olefin end groups. Howev.r, iBuA1C12 needs activ.ting v.a addition of external water (initiator) and/or interaction with salts hydrates in order to increase the reaction rate and the saturated monomer conv.rsion.[Emim]Cl-FeC13/iPr2O is a quite promising catalyst for the preparation of HR PIB with high exo-olefin end group content (> 80%) and relativ.ly low polydispersity (Mw/Mn v.a cationic polymerization of C4 mixed feed. The sonication of reaction mixture in case of using [emim]Cl-FeCh allowed increasing the reaction rate and decreasing the molecular weight.

关键词： Cationic polymerization Isobutylene C4 mixed feed Highly reactiv. polyisobutylene