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Effects of family non-universal Z′model in angular observables of B→(ρ,a_(1))µ^(+)µ^(−)decays

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Ch.nese physics C 2024年第10期48卷 86-113页

作者： Nimra Farooq Marwah.Zaki M.Ali Parach. Faisal Munir Bh.tta Department of physics School of Natural SciencesNational University of Sciences and TechnologyH-12Islamabad44000Pakistan

We present th. angular distribution of th. four-fold B→ρ(→ππ)µ^(+)µ^(−) and B→a_(1)(→ρ_(Ⅱ).⊥π)µ^(+)µ^(−) decays in th. Standard Model and family non-universal Z'*** th. quark level,th.se decays are govered by th. b→dµ^(+)µ^(−) *** with.different angular observables,we provide predictions of differential branch.ng ***,forward-backward asymmetry,and longitudinal polarization fractions of ρ and a_(1) *** analysis sh.wsth.t th. signatures of th. fimily non-universal Z’model are more distinct in th. observables associated with.th. B→ρ(→ππ)µ^(+)µ^(−) decay th.n in th.se associated with.th. B→a_(1)(→ρ_(Ⅱ).⊥π)µ^(+)µ^(−) *** measurements ofth. predicted angular observables,both.at current and fiuture h.gh.energy colliders,will provide useful *** data required to clarify th. structure of th. family non-universal Z' model in |△b|=△d|=1 processes.

关键词： h.avy quark physics B meson physics beyond th. Standard Model

Th. multi-impurity system in CdSe nanoplatelets:electronic structure and th.rmodynamic properties

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Communications in Th.oretical physics 2024年第3期76卷 165-173页

作者： D A Bagh.asaryan V A h.rutynyan E M Kazaryan h.A Sarkisyan Russian-Armenian University H Emin 1230051YerevanArmenia Institute of Applied Problems of physics 25 Nersisyan St0014YerevanArmenia

Th.s paper th.oretically studies th. impurity states and th. effects of impurity concentration and configuration on th. optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An image ch.rge-based model of electron-impurity interaction is *** ch.rge-carrier energy spectra and corresponding wave functions depending on th. impurity number and configuration are *** electron binding energies are calculated for different NPL *** is sh.wn th.t th. image ch.rge-based interaction potential th.t arises due to th. dielectric constants mismatch.is much.stronger th.n th. interaction potential th.t does not take such.a mismatch.into ***,it is demonstrated th.t th. binding energies are increasing with.th. number of *** calculate th. canonical partition function using th. energy levels of th. electron,wh.ch.in turn is used to obtain th. mean energy,h.at capacity,and entropy of th. non-interacting electron *** th.rmodynamic properties of th. non-interacting electron gas th.t depend on th. geometric parameters of th. NPL,impurity number,configuration,and temperature are studied.

关键词： nanoplateletes th.rmodynamic properties impurity states

Al_(1-x)Sc_(x)Sb_(y)N_(1-y):An opportunity for ferroelectric semiconductor field effect transistor

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Science Ch.na(physics,Mech.nics & Astronomy) 2024年第11期67卷 133-140页

作者： Sh.jin Guo Xiangh.a Kong h.ng Guo College of physics and Electronic Engineering Center for Computational SciencesSichuan Normal UniversityChengdu 610068China College of physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Department of physics McGill UniversityMontreal H3A 2T8Canada

For th. in-memory computation arch.tecture,a ferroelectric semiconductor field-effect transistor(FeSFET)incorporates ferroelectric material into th. FET ch.nnel to realize logic and memory in a single *** emerging groupⅢnitride material Al_(1-x)Sc_(x)N provides an excellent platform to explore FeSFET,as th.s material h.s significant electric polarization,ferroelectric switch.ng,and h.gh.carrier ***,steps need to be taken to reduce th. large band gap of~5 eV of Al_(1-x)Sc_(x)N to improve its transport property for in-memory logic *** state-of-th.-art first principles analysis,h.re we predict th.t alloying a relatively small amount(less th.n~5%)of Sb impurities into Al_(1-x)Sc_(x)N very effectively reduces th. band gap wh.le maintaining excellent *** sh.w th.t th. co-doped Sb and Sc act cooperatively to give a significant band bowing leading to a small band gap of~1.76 eV and a large polarization parameter~0.87 C/m^(2),in th. quaternary Al_(1-x)Sc_(x)Sb_(y)N_(1-y)*** Sb impurity states become more continuous as a result of interactions with.Sc and can be used for impurity-mediated *** on th. Landau-Kh.latnikov model,th. Landau parameters and th. corresponding ferroelectric h.steresis loops are obtained for th. quaternary *** findings indicate th.t Al_(1-x)Sc_(x)Sb_(y)N_(1-y)is an excellent candidate as th. ch.nnel material of FeSFET.

关键词： ferroelectricity Al_(1-x)Sc_(x)N FeSFET

Domain wall network:A dual solution for gravitational waves and h.bble tension?

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Science Ch.na(physics,Mech.nics & Astronomy) 2024年第11期67卷 39-46页

作者： Ligong Bian Sh.ailiang Ge Ch.ngh.ng Li Jing Sh. Junch.o Zong Department of physics and Ch.ngqing Key laboratory for Strongly Coupled physics Chongqing UniversityChongqing 401331China Center for h.gh.Energy physics Peking UniversityBeijing 100871China Sch.ol of physics and State Key laboratory of Nuclear physics and Tech.ology Peking UniversityBeijing 100871China Department of Astronomy Key Laboratory of Astroparticle Physics of Yunnan ProvinceSchool of Physics and AstronomyYunnan UniversityKunming 650091China Beijing Laser Acceleration Innovation Center Beijing 101400China Department of physics Nanjing UniversityNanjing 210093China CAS Key laboratory of Th.oretical physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China

We explore th. possibility th.t domain wall networks generate th. stoch.stic gravitational wave background(SGWB) observed as a strong common power-law process in th. Data Release-2 of Parkes Pulsar Timing Array. We find th.t a broad range of parameters, specifically wall tension around σ_(DW)^(29-414 TeV)^(3) and wall-decay temperature with.n T_(d) ~ 20-257 MeV, can explain th.s ph.nomenon at a 68% credible level. Meanwh.le, th. same parameters could ease th. h.bble tension if particles from th.se domain wall networks decay into dark radiation. We establish.a direct analytical relationsh.p, ΩGW(f_(p), T_(0))h.(2)~ Ω_(rad)h.(2)(Ω_νΩN_(eff))^(2),to illustrate th.s coincidence, underlining its importance in th. underlying physics and potential applicability to a wider range of models and data. Conversely, if th. common power-law process is not attributed to domain wall networks, our findings impose tigh. limits on th. wall tension and decay temperature.

关键词： domain wall gravitational waves h.bble tension

IN-SITU AFM OF POLYMER CRYSTALLIZATION

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Ch.nese Journal of Polymer Science 2003年第2期21卷 135-140页

作者： J.K.h.bbs h. h. wills physics laboratory Tyndall Avenue Bristol BS8 1TL UK

Atomic force microscopy images taken during th. crystallization of polyeth.lene both.from processed andquiescent melts are presented. Crystallization from processed melts provides furth.r evidence of a region in front of agrowing lamella th.t is influenced by th. crystallization process, but extending only 40 nm into th. melt. h.gh.resolutionimages of th. growing crystal tip, taken during crystallization, sh.w no direct evidence of th. existence of intermediateph.ses. Th. growing tip is sh.wn to be sligh.ly rounded. In-filling crystallization, occurring after th. initial flush.of growth.is imaged in polyeth.lene for th. first time, and sh.wn to continue to a temperature 8℃ below th. initial crystallizationtemperature.

关键词： AFM Polymer crystallization Polyeth.lene

Th. role of singlet oxygen and h.droxyl radical in th. ph.tobleach.ng of meso-substituted cationic pyridyl porph.rins in th. presence of folic acid

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Journal of Innovative Optical h.alth.Sciences 2024年第5期17卷 67-80页

作者： Lusine Mkrtch.an Torgom Seferyan Marina Parkh.ts Sergei Lepesh.evich.Boris Dzh.garov Gagik Sh.avonyan Elena Tuch.na Valery Tuch.n Grigor Gyulkh.ndanyan laboratory of Bioengineering Institute of Biochemistry After H.Buniatyan of the NAS of Armenia 5/1 Paruyr Sevak StreetYerevan 0014Armenia laboratory of Biomedical Research Institute of Biochemistry after H.Buniatyan of the NAS of Armenia 5/1 Paruyr Sevak StreetYerevan 0014Armenia B.I.Stepanov Institute of physics NAS of Belarus 68-2 Nezavisimosti Avenue Minsk 220072Belarus National Polytech.ic University of Armenia 105 Teryan Street Yerevan 0009Armenia Science Medical Centre Saratov State University 83 Astrakhanskaya StreetSaratov 410012Russia

Using a ph.tosensitizer(PS),ligh.,and oxygen,ph.todynamic th.rapy creates cytotoxic reactive oxygen species,such.as singlet oxygen(1O2),th.t kill cancer *** cancer cell lines h.ve up to 300 times more folic acid receptors th.n h.alth. ***,folic acid is often used to improve selectivity of *** poses a disadvantage for *** th.s paper,we h.ve studied th. ph.toinduced ch.nges of meso-substituted cationic pyridyl porph.rins in th. presence of folic acid using uorescence and absorption *** th.s work,it was demonstrated th.t L-h.stidine,wh.ch.is a 1O2 quench.r,and D-mannitol,wh.ch.is a h.droxyl radical quench.r,can reduce ph.tobleach.ng of cationic porph.rins and th.ir interaction products with.*** implies both.singlet oxygen and h.droxyl radicals are involved in ***,our study revealed certain important features of th. ph.tobleach.ng of cationic porph.rins in th. presence of folic acid.

关键词： Ph.todynamic th.rapy cancer quench.rs h.stidine mannitol

Nanodiamond-Assisted h.gh.Performance Lith.um and Sodium Ions Co-Storage

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Energy & Environmental Materials 2024年第6期7卷 94-105页

作者： Xiaoch.n Sun Xuan Gao Ch.ng Su Wei Ch.ng Nan Gao Xin Zh.ng Mengmeng Gong h.obo Dong Yuh.ng Dai Guanjie h. h.ngdong Li State Key Lab of Superh.rd Materials College of PhysicsJilin UniversityChangchun130012 China Ch.istoph.r Ingold laboratory Department of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJ UK Nuffield College University of OxfordNew RoadOxford OX11NFUK

Wh.le lith.um resources are scarce for h.gh.energy-dense lith.um-ion batteries(LIBs),sodium-ion batteries(SIBs),serving as an alternative,inh.rently suffer from low capacity and th. h.gh.cost use of non-graph.te *** Li-and Na-ions with.n a single battery system is expected to mitigate th. sh.rtcomings of both.systems wh.le leveraging th.ir respective *** th.s study,we developed and assembled a nanodiamonds(NDs)-assisted co-Li/Na-ion battery(ND–LSIB).Th.s innovative battery system comprised a commercial graph.te anode,an ND-modified polypropylene(DPP)separator,a h.brid lith.um/sodium-based electrolyte,and a *** is th.oretically and experimentally demonstrated th.t th. ND/Li co-insertion can serve as an ion-drill opening graph.te layers and reconstructing graph.te anodes into few-layered graph.ne with.expanding interlayer space,ach.eving h.gh.y efficient Li/Na storage and th. th.oretical maximum of LiC_(6)for Li storage in *** addition,ND is h.lpful for creating a LiF-/NaF-rich.h.brid solid electrolyte interface with.improved ionic mobility,mech.nical strength.and ***,ND–LSIBs h.ve h.gh.r specific capacities~1.4 times th. th.oretical value of LIBs and sh.w long-term cycling *** study proposes and realizes th. concept of Li/Na co-storage in one ion battery with.compatible h.gh.performance,cost-effectiveness,and industrial prospects.

关键词： battery lith.um electrolyte

Ph.tocatalytic application of magnesium spinel ferrite in wastewater remediation:A review

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Journal of Magnesium and Alloys 2024年第2期12卷 490-505页

作者： Roh.t Jasrotia Nikh.l Jaswal Jyoti Prakash.Ch.n Ch.on Kit Jagpreet Singh.Abh.sh.k Kandwal Sch.ol of physics and Materials Science Shoolini UniversityBajholSolanH.P.India h.malayan Centre of Excellence in Nanotech.ology Shoolini UniversityBajholH.P.India INTI International University Putra NilaiNegeri SembilanMalaysia Department of Ch.mistry University Centre for Research&Development Chandigarh UniversityMohali140413PunjabIndia Sh.nzh.n Institute of Advanced Tech.ology Chinese Academy of SciencesChina

Th.s review paper explores th. efficacy of magnesium ferrite-based catalysts in ph.tocatalytic degradation of organic contaminates(antibiotic and dyes).We report th. influence of different doping strategies,synth.sis meth.ds,and composite materials on th. degradation efficiency of th.se *** analysis reveals th. versatile and promising nature of magnesium ferrite-based catalysts,offering th. valuable insigh.s into th.ir practical application for restoring th. *** to th. smaller band gap and magnetic nature of magnesium ferrite,it h.lds th. benefit of utilising th. broader spectrum of ligh. wh.le also being *** in-depth.analysis of magnesium ferrites'ph.tocatalytic mech.nism could lead to th. development of ch.ap and reliable ph.tocatalyst for th. wastewater *** concise review offers a th.rough.summary of th. key advancements in th.s field,h.gh.igh.ing th. pivotal role of th. magnesium ferrite based ph.tocatalysts in addressing th. pressing global issue of organic pollutants in wastewater.

关键词： Magnesium ferrite Wastewater Dyes Antibiotics Ph.tocatalytic degradation

Superconducting ternary h.drides: progress and ch.llenges

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National Science Review 2024年第7期11卷 47-61页

作者： Wendi Zh.o Xiaoli h.ang Zih.n Zh.ng Su Ch.n Mingyang Du Defang Duan Tian Cui Institute of h.gh.Pressure physics School of Physical Science and Technology Ningbo University State Key laboratory of Superh.rd Materials College of Physics Jilin University

Since th. discovery of th. h.gh.temperature superconductors h.S and Lah.0under h.gh.pressure,compressed h.drides h.ve received extensive attention as promising candidates for room-temperature superconductors. As a result of current h.gh.pressure th.oretical and experimental studies, it is now known th.t almost all th. binary h.drides with.a h.gh.superconducting transition temperature（Tc） require extremely h.gh.pressure to remain stable, h.ndering any practical application. In order to furth.r lower th. stable pressure and improve superconductivity, research.rs h.ve started exploring ternary h.drides and h.d many ach.evements in recent years. h.re, we discuss recent progress in ternary h.drides, aiming to deepen th. understanding of th. key factors regulating th. structural stability and superconductivity of ternary h.drides, such.as structural motifs, bonding features, electronic structures, electron–ph.non coupling, ***, th. current issues and ch.llenges of superconducting ternary h.drides are presented, togeth.r with.th. prospects and opportunities for future research.

关键词： h.gh.pressure ternary h.drides conventional superconductivity electron–ph.non coupling