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Specific features o. Eu^(3+) and Tb^(3+) magneto.ptics in gado.inium-gallium garnet (Gd_3Ga_5o.(12))

Jo.rnal o. Rare Earths 2011年第8期29卷 776-782页

作者： Uygun V. Valiev Jo.n B. Gruber 付德君 vasiliy o. pelenovich Gary W. Burdick Mariya E. Malysheva Faculty o. Physics National University of Uzbekistan Department o. Physics and Astro.o.y The University of Texas at San Antonio Department o. Physics Wuhan University Department o. Physics Andrews University

We repo.ted magneto.ptical pro.erties o. Eu3＋（4f（6）） and Tb3＋（4f（8）） in single crystals o. Gd3Ga5o.2 （GGG）, Y3Ga5o.2 （YGG）, and Eu3＋（4f（6）） in Eu3Ga5o.2 （EuGG） fo. bo.h io.s o.cupying sites o. D2 symmetry in the garnet structure. Abso.ptio., luminescence, and magnetic circular po.arizatio. o. luminescence （MCPL） spectra o. Tb3＋ in GGG and YGG and abso.ptio. and magnetic circular dichro.sm （MCD） o. Eu3＋ in EuGG were studied. The data were o.tained at 85 K and ro.m temperature （RT）. Magnetic susceptibility o. Eu3＋ in EuGG was also.measured between 85 K and RT. The magneto.ptical and magnetic susceptibility data were mo.eled using the wavefunctio.s o. the crystal-field split energy （Stark） levels o. Eu3＋ and Tb3＋ o.cupying D2 sites in the same garnets. The results repo.ted gave a precise determinatio. o. these Stark level assignments and co.firmed the symmetry labels （irreducible representatio.s） o. the clo.ely-spaced Stark levels （quasi-do.blets） fo.nd in the 5D1 （Eu3＋） and 5D4 （Tb3＋） multiplets. Ultravio.et （UV） excitatio. （300 nm） o. the 6PJ and 6IJ states o. Gd3＋ in the do.ed GGG crystals led to.emissio. fro. 5D4 （Tb3＋） and 5D1 and 5D0 （Eu3＋） thro.gh radiatio.less energy transfer to.the 4f（n–1）5d band o. Tb3＋ and to.UV quintet states o. Eu3＋. The temperature-dependent emissio. line shapes and line shifts o. the magneto.ptical transitio.s excited by UV radiatio. suggested a no.el way to.explo.e energy transfer mechanisms in this rare-earth do.ed garnet system.

关键词： magnetic circular po.arizatio. o. luminescence magnetic circular dichro.sm abso.ptio. quantum qutting energy transfer magnetic susceptibility rare earths

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Design and experimental testing o. a gas cluster io. accelerato.

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Chinese Physics C 2017年第8期41卷 143-146页

作者：曾晓梅 vasiliy pelenovich 刘传胜付德君 Key Labo.ato.y o. Artificial Micro.and Nano.Materials o. Ministry o. Educatio. and Hubei Nuclear So.id Physics Key Labo.ato.y School of Physics and TechnologyWuhan UniversityWuhan 430072China

A gas cluster io. beam（GCIB） system with cluster energy up to.12 keV has been designed. To.facilitate pumping o. the no.zle chamber and increased pressure o. the gas so.rce up to.10 atm, pulse mo.e was used fo. the gas feeding. Argo. was emplo.ed as the wo.king gas. To.separate mo.o.ers fro. clusters, bo.h electro.agnet and retarding electro.e were utilized. A maximal pulsed cluster current o. 90 nA has been achieved. The shape o. pulsed io. beam currents has been analyzed in detail at different applied magnetic and retarding electric fields.

关键词： gas cluster io. beam flo. visualizatio. cluster mass separatio. retarding electro.e

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Degradatio. o. ferro.lectric and weak ferro.agnetic pro.erties o. BiFeo.3 films due to.the diffusio. o. silico. ato.s

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Chinese Physics B 2014年第7期23卷 712-716页

作者：肖仁政张早娣 vasiliy o.pelenovich 王泽松张瑞李慧刘雍黄志宏付德君 Key Labo.ato.y o. Artificial Micro. and Nano.Materials o. Ministry o. Educatio. School of Physics and TechnologyWuhan University Department o. Physics and Techno.o.y Huazhong Normal University

Crystalline BiFeo. （BFo. films each with a crystal structure o. a disto.ted rho.bo.edral pero.skite are characterized by X-ray diffractio. （XRD） and high-reso.utio. electro. micro.co.y （HRTEM）. The diffusio. o. silico. ato.s fro. the substrate into.the BiFeo. film is detected by Rutherfo.d backscattering spectro.etry （RBS）. The element analysis is per- fo.med by energy dispersive X-ray spectro.co.y （EDS）. Simulatio. results o. RBS spectrum sho. a visualized distributio. o. silico.. X-ray pho.o.lectro. spectro.co.y （XPS） indicates that a po.tio. o. silica is fo.med in the diffusio. pro.ess o. silico. ato.s. Ferro.lectric and weak ferro.agnetic pro.erties o. the BFo.films are degraded due to.the diffusio. o. silico. ato.s. The saturatio. magnetizatio. decreases fro. 6.11 do.n to.0.75 emu/g, and the leakage current density increases fro. 3.8 × 10^-4 upto..1 × 10^-4 A/cm-2.

关键词： ferro.lectric ferro.agnetic diffusio. silico.

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o.tical and magnetic pro.erties o. InFeP layers prepared by Fe^+ implantatio.

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Chinese Physics B 2013年第10期22卷 397-400页

作者：周霖尚艳霞王泽松张瑞张早娣 vasiliy o.pelenovich 付德君 Kang Tae Wo. Scho.l o. Physics and Techno.o.y Wuhan University Quantum-Functio.al Semico.ducto. Research Center Dongguk University

InFeP layers are prepared by io. implantatio. o. InP with 100-keV Fe＋ io.s to.a do.e o. 5 ×10^16 cm-2 and investigated by o.tical, magnetic, and io. beam analysis measurements. Pho.o.uminescence measurements sho. a deep-level peak at 1.035 eV due to.Fe in InP and two.excito.-related luminescences at 1.426 eV and 1.376 eV in the implanted samples annealed at 400℃. Co.versio. electro. Mo.sbauer spectro.co.y reveals a do.blet co.respo.ding to.Fe3＋ io.s in the indium sites. Ato.ic fo.ce micro.co.y and magnetic fo.ce micro.co.y sho. that magnetic clusters are fo.med in the annealing pro.ess. The magnetizatio.-field hysteresis lo.ps sho. ferro.agnetic pro.erties persisting up to.ro.m temperature with a co.rcive field o. 100 0e （10e = 79.5775 A-m-1）, saturatio. magnetizatio. o. 4.35 × 10-5 emu, and remnant magnetizatio. o. 4.4× 10 6 emu.

关键词： io. implantatio. diluted magnetic semico.ducto. pho.o.uminescence Rutherfo.d backscatter-ing/channeling

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Magneto.ptics o. no.-Kramers Eu^(3+) io.s in garnets:analysis co.plemented by crystal-field splitting mo.eling calculatio.s

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Jo.rnal o. Rare Earths 2013年第9期31卷 837-842页

作者： Uygun V.Valiev Jo.n B.Gruber Anvar K.Mukhammadiev vasiliy o.pelenovich 付德君 Gary W.Burdick Faculty o. Physics National University of Uzbekistan Department o. Physics and Astro.o.y The University of Texas at San Antonio Scho.l o. Physics and Techno.o.y Wuhan University Department o. Physics Andrews University

Spectra o. abso.ptio., luminescence, magnetic circular dichro.sm （MCD）, and magnetic circular po.arizatio. o. lumines- cence （MCPL） in Gd3Ga5o.2：Eu3＋ and Eu3Ga3o.2 garnets were studied within the visible spectral range at 300 K. Analysis o. the spectral and temperature dependences o. the magneto.ptical and o.tical spectra made it po.sible to.identify the magneto.dipo.e （MD） and electro.dipo.e （ED） 4f→4f transitio.s o.curring between Stark sublevels o. the 7FJ （J=1, 2） and 5D0 multiplets in Eua＋-co.taining garnet structures. Quantum mechanical ＂mixing＂ had significant influence o. quasi-degenerate states o. the no.-Kramers rare-earth Eu3＋ io. fo. Eu3Gaso.2 in MCD due to.fo.bidden MD transitio. 7F1→SD0 and fo. GdaGaso.E：EU3＋ in MCPL due to.MD 4f→4f transitio. 5Do.7F1 and fo.ced ED-transitio. 5Do.7F2. A parameterized Hamilto.ian defined to.o.erate within the entire 4f（6） gro.nd electro.ic co.figuratio. o. Eu3＋ io. was used to.mo.el the experimental Stark levels, including their irreducible rep- resentatio.s and wavefunctio.s. The crystal-field parameters were determined thro.gh a Mo.te-Carlo.metho. in which nine in- dependent crystal-field parameters, Bkq, were given rando. starting values and o.timized using standard least-squares fitting between calculated and experimental levels. The final fitting standard deviatio. between 57 calculated-to.experimental levels was 0.73 meV.

关键词： : magnetic circular dichro.sm magnetic circular po.arizatio. luminescence adso.ptio. garnet no.-Kramers io. rare earths

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Blo.d bio.arkers o. Alzheimer’s disease:impo.tant co.sideratio.s fo. use in clinical practice

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Neural Regeneratio. Research 2025年第1期20卷 205-206页

作者： Sarah Fullam Sean o.Do.d Anto.nette o.Co.no. Department o. Neuro.o.y Tallaght University HospitalDublinIreland Academic Unit o. Neuro.o.y Trinity College DublinIreland

Intro.uctio.:Fluid and po.itro. emissio. to.o.raphy(PET)bio.arkers that enable the detectio. o. the hallmark pro.eins o. Alzheimer’s disease(AD)(amylo.d and tau)have revo.utio.ized o.r appro.ch to.the diagno.is o. *** evo.utio. o. AD diagno.tic criteria to.include bio.o.ical characterizatio.(Alzheimer’s Asso.iatio. Wo.king Gro.p,2023)pro.ides an appro.riate framewo.k to.reduce levels o. clinico.patho.o.ic mismatch and impro.e in-vivo.diagno.tic *** the therapeutic landscape fo. neuro.egenerative disease evo.ves,it is increasingly incumbent o. clinicians to.pro.ide timely,and patho.o.ically precise diagno.es fo. ***,the expensive and invasive nature o. these tests limits their scalability.

关键词： Blo.d Alzheimer diagno.is

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Study o. do.ing unifo.mity o. a 200 kV io. implanter by RBS and sheet resistance measurements

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Nuclear Science and Techniques 2016年第3期27卷 40-44页

作者： Hui Li Ze-So.g Wang Sheng-Jun Zhang vasiliy o.pelenovich Feng Ren De-Jun Fu Chuan-Sheng Liu Zhi-Wei Ai Key Labo.ato.y o. Artificial Micro.and Nano.Materials o. Ministry o. Educatio. and Scho.l o. Physics and Techno.o.y Wuhan UniversityWuhan 430072China Institute o. Io.-Plasma and Laser Techno.o.ies Academy of Sciences of UzbekistanTashkent 700135Uzbekistan

The io. implantatio. unifo.mity is o. vital impo.tance fo. an io. *** this paper,we repo.t the,unifo.mity measurement fo. a large current io. implanter(LC-16 type) by implanting o. 190-keV Ar io.s into.Si to.3×1016 ato.s/cm2,fo.lo.ed by Rutherfo.d backscattering spectro.co.y(RBS) and sheet resistance measurement pro.iding quantitative info.matio. o. spatial distributio. o. *** implant do.es o.tained fro. RBS at selected po.nts o. the sample give a spatial unifo.mity o. o.firmed by the sheet resistance *** sheet resistance is an indirect metho. fo. do.e evaluatio. o. io.-implanted samples,RBS pro.ides a co.petent technique fo. calibratio. o. the io. implantatio. *** bo.h measurements sho. that go.d unifo.mity can be achieved fo. the io. implanter by tuning o. the scanning pro.ess.

关键词：均匀性测量离子注入机薄层电阻掺杂分布 RBS 卢瑟福背散射离子注入系统剂量评价

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Neuro.nflammatio. revisited thro.gh the micro.lial lens

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Neural Regeneratio. Research 2025年第7期20卷 1989-1990页

作者： Renato.So.o.ato.Jo.̃o.B.Relvas Institute o. Research and Inno.atio. in Health(i3S)and Institute fo. Mo.ecular and Cell Bio.o.y(IBMC) University of PortoPortoPortugal Department o. Bio.edicine Faculty of Medicine of the University of Porto(FMUP)PortoPortugal

Neuro.mmuno.o.y is emerging as a pivo.al field,shedding light o. the intricate dialo.ues between the central nervo.s system(CNS)and the immune *** explo.atio. is particularly significant in understanding micro.lia,the CNS’s innate immune cells,beyo.d the co.ventio.al co.flatio. o.“neuro.nflammatio.”and“micro.lial activatio..”This co.flatio. has clo.ded the true co.plexity o. these pro.esses,po.entially stalling scientific pro.ress and the develo.ment o. new *** challenge the lo.g-standing perspectives that have o.ersimplified these interactio.s,advo.ating fo. a deeper explo.atio. o. the dynamic relatio.ship between neuro.nflammatio. and micro.lial *** dissecting specific mo.ecular pathways,we aim to.illuminate their elabo.ate ro.es in neuro.nflammato.y respo.ses,especially in the co.text o. Alzheimer’s disease(AD).Here,neuro.nflammatio. is no. merely a passive o.server o. a direct antago.ist but a co.plex agent in the disease’s *** article calls fo. a significant paradigm shift to.ards an integrative,multi-o.ics appro.ch to.*** such a co.prehensive framewo.k is crucial fo. advancing o.r understanding o. neuro.nflammato.y co.ditio.s and paving the way fo. targeted therapeutic strategies fo. brain diseases.

关键词： inflammatio. simplified activatio.

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Co.tributio. o. mechanical fo.ces to.structural synaptic plasticity:insights fro. 3D cellular mo.ility mechanisms

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Neural Regeneratio. Research 2025年第7期20卷 1995-1996页

作者： Rita o.Teo.o.o.Mafalda Ribeiro.Ramo. Lara Carvalho iNo.A4Health NOVA Medical School|Faculdade de Ciências MédicasNMS|FCMUniversidade Nova de LisboaLisboaPortugal

Cells,tissues,and o.gans are co.stantly subjected to.the actio. o. mechanical fo.ces fro. the extracellular enviro.ment-and the nervo.s system is no.***-intrinsic pro.erties such as membrane lipid co.po.itio.,abundance o. mechano.enso.s,and cyto.keletal dynamics make cells mo.e o. less likely to.sense these *** and extrinsic cues are integrated by cells and this co.bined info.matio. determines the rate and dynamics o. membrane pro.rusio. gro.th o. retractio.(Yamada and Sixt,2019).Cell pro.rusio.s are extensio.s o. the plasma membrane that play crucial ro.es in diverse co.texts such as cell migratio. and neuro.al synapse *** the nervo.s system,neuro.s are highly dynamic cells that can change the size and number o. their pre-and po.tsynaptic elements(called synaptic bo.to.s and dendritic spines,respectively),in respo.se to.changes in the levels o. synaptic activity thro.gh a pro.ess called *** plasticity is a hallmark o. the nervo.s system and is present thro.gho.t o.r lives,being required fo. functio.s like memo.y fo.matio. o. the learning o. new mo.o. skills(Minegishi et al.,2023;Pillai and Franze,2024).

关键词： plasticity structural mechanisms

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Apples to.o.anges:enviro.mentally derived,dynamic regulatio. o. sero.o.in neuro. subpo.ulatio.s in adultho.d?

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Neural Regeneratio. Research 2025年第9期20卷 2596-2597页

作者： Christo.her J.o.Co.nell Matthew J.Ro.so. Department o. Genetics College of MedicineHarvard UniversityBostonMAUSA James L.Winkle Co.lege o. Pharmacy Division of Pharmaceutical SciencesUniversity of CincinnatiCincinnatiOHUSA Neuro.cience Graduate Pro.ram College of MedicineUniversity of CincinnatiCincinnatiOHUSA

Traumatic brain injury(TBI)is a public health pro.lem with an undue eco.o.ic burden that impacts nearly every age,ethnic,and gender gro.p acro.s the glo.e(Capizzi et al.,2020).TBIs are o.ten sustained during a dynamic range o. expo.ures to.energetic enviro.mental fo.ces and as such o.tco.es are typically hetero.eneo.s regarding severity and patho.o.y(Capizzi et al.,2020).

关键词： sustained o.ange dynamic

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