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Plasma-etching on monolithic MOFs-based MIM filter boosted chemical sensing

Nano Research 2024年第4期17卷 2800-2807页

作者： Jianxi Liu Li feng Zhihuan Li y.ng Wu feng Zhou y.dong Xu Research&Development Institute Northwestern Polytechnical University in ShenzhenShenzhen 518057China State Key.Laboratory.of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China y.ntai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering Shandong Laboratory of Advanced Materials and Green Manufacturing at YantaiYantai 264006China State Key.Laboratory.of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Metal-insulator-metal(MIM)cavity.as a lithography.free structure to control light transmission and reflection has great potential in the field of optical ***,the dense top metal lay.r of the MIM prohibits any.external medium from entering the dielectric insulation lay.r,which limits the application of the cavity.in the sensing ***,we demonstrate a series of monolithic metal-organic frameworks(MOFs)based MIM cavities,which are treated by.plasma etching to provide channels for chemical diffusion and to advance *** modulate the bandwidth of the MIM filters by.controlling the MOF thickness as insulator *** plasma-etching is applied to build channels on the top metal lay.r without altering their saturation and brightness for chemical sensing *** etching time regulates the number and size of channels on the top metal *** behavior is demonstrated on the plasma-etched MOFs-based MIM cavity.when external chemicals diffuse in the *** addition,we generate patterned structure of the MOFs-based MIM cavity.via plasma-mask method,which can transfer to different substrates and produce a controllable structure color change for chemical *** MIM cavity.may.promote the advancement and applications of structural color in security.imaging,color display.information anticounterfeiting,and color printing.

关键词： metal-organic frameworks(MOFs) spin-coating metal-insulator-metal filter patterns sensing

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Contributors to tidal duration asy.metry.with varied coastline configurations on western shelf of y.llow Sea

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Water Science and Engineering 2024年第1期17卷 1-12页

作者： Xi feng Zheng Li Hui feng Jia-y.n y.ng Shou-peng Xie Wei-bing feng College of Harbor.Coastal and Offshore Engineering Hohai UniversityNanjing 210098China China Harbour Engineering Co. LtdBeijing 100027China Key.Laboratory.of Port Waterway and Sedimentation Engineering of the Ministry of CommunicationsNanjing 210029China China South-to-North Water Diversion Corporation Limited Beijing 100036China

Coastal management in China is confronted with an urgent choice between natural restoration and maintenance of existing seawalls and reclaimed land for economic development.A key.criterion for making this decision is the resilience to coastal flooding,which depends on the ability.to predict tidal *** duration asy.metry.TDA)is a key.parameter in determination of the arrival and duration of flood *** study.selected the western inner shelf of the y.llow Sea(Wy.)as the study.area and investigated the responses of TDA to different shoreline configurations and relative sea level *** responses of TDA to shoreline reconstruction y.elded spatial variability.locally.and *** the nearshore area,the responses of TDA to the complex ocean environment mainly.originated from the combined functions of reflection,bottom friction,and advection,which controlled the energy.transfer from M2 or S2 constituents to their overtides or compound *** sensitivity.of TDA to coastline ty.ologies was not limited to coastal waters but could stretch over the entire inner *** vulnerability.of tidal responses was due to the displacement of the M2 amphidrome of the Kelvin wave on the Wy.,which in turn changed tidal energy.fluxes over the *** relative sea level rise could intensify.the feedback of TDA to seawalls and land reclamation.

关键词： Tidal duration asy.metry Western inner shelf of y.llow Sea Natural restoration Relative sea level rise Tidal amphidrome

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New lump solutions and several interaction solutions and their dy.amics of a generalized(3+1)-dimensional nonlinear differential equation

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Communications in Theoretical Phy.ics 2024年第2期76卷 1-13页

作者： y.xuan feng Zhonglong Zhao School of Mathematics North University of ChinaTaiyuanShanxi 030051China

In this paper,we mainly.focus on proving the existence of lump solutions to a generalized(3+1)-dimensional nonlinear differential ***’s bilinear method and a quadratic function method are employ.d to derive the lump solutions localized in the whole plane for a(3+1)-dimensional nonlinear differential *** examples of such a nonlinear equation are presented to investigate the exact expressions of the lump ***,the 3d plots and corresponding density.plots of the solutions are given to show the space structures of the lump *** addition,the breath-wave solutions and several interaction solutions of the(3+1)-dimensional nonlinear differential equation are obtained and their dy.amics are analy.ed.

关键词： lump solutions generalized(3+1)-dimensional nonlinear differential equation Hirota's bilinear method quadratic function method interaction solutions

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Molecule doping enables high-quality.perovskite junctions for all-perovskite tandem solar cells

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National Science Review 2024年第7期11卷 69-70页

作者： Lingeswaran Arunagiri feng Gao Department of Phy.ics Chemistry and Biology(IFM) Link?ping University

The maximum theoretical power conversion efficiency.PCE) for single-junction solar cells based on the Shockley.Queisser(S-Q) model is 33.7% for an optimal bandgap(Eg) of 1.34 eV under 1-sun illumination [1]. Multijunction(tandem) solar cells present a realistic option for overcoming the S-Q limit and achieving efficiency.of >40%due to decreased thermalization loss in tandem configuration [2].

关键词： METAL HALIDE PEROVSKITES

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The evolving views of hematopoiesis:from embry. to adulthood and from in vivo to in vitro

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Journal of Genetics and Genomics 2024年第1期51卷 3-15页

作者： y.fan Zhang feng Liu Shandong Provincial Key.Laboratory.of Animal Cell and Developmental Biology School of Life SciencesShandong UniversityQingdaoShandong 266237China State Key.Laboratory.of Membrane Biology Institute of ZoologyInstitute for Stem Cell and RegenerationUniversity of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100101China

The hematopoietic sy.tem composed of hematopoietic stem and progenitor cells(HSPCs)and their differentiated lineages serves as an ideal model to uncover generic principles of cell fate *** gastrulation onwards,there successively.emerge primitive hematopoiesis(that produces specialized he-matopoietic cells),pro-definitive hematopoiesis(that produces lineage-restricted progenitor cells),and definitive hematopoiesis(that produces multipotent HSPCs).These nascent lineages develop in several transient hematopoietic sites and finally.colonize into lifelong hematopoietic *** development and maintenance of hematopoietic lineages are orchestrated by.cell-intrinsic gene regulatory.networks and cell-extrinsic microenvironmental *** to the progressive methodology.e.g.,high-throughput lineage tracing and single-cell functional and omics analy.es),our understanding of the developmental origin of hematopoietic lineages and functional properties of certain hematopoietic organs has been updated;meanwhile,new paradigms to characterize rare cell ty.es,cell heterogeneity.and its causes,and comprehensive regulatory.landscapes have been ***,we review the evolving views of HSPC biology.during developmental and postnatal ***,we discuss recent advances in the in vitro induction and expansion of HSPCs,with a focus on the implications for clinical applications.

关键词： Hematopoietic stem and progenitor cell Developmental hematopoiesis Postnatal hematopoiesis In vitro hematopoiesis

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Inflammatory.Factor IL1αInduces Aberrant Astrocy.e Proliferation in Spinal Cord Injury.Through the Grin2c/Ca^(2+)/CaMK2b Pathway

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Neuroscience Bulletin 2024年第4期40卷 421-438页

作者： y. Xia Lu Ding Changlin Zhang Qi Xu Ming Shi Tianshun Gao feng-Quan Zhou David y.B.Deng Scientific Research Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Department of Gy.ecology The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Pelvic Floor Disorders Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Big Data Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China Sir Run Run Shaw Hospital Zhejiang University School of MedicineHangzhou310016China Orthopaedic and Neurological Repair Center The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen518107China

Spinal cord injury.SCI)is one of the most devastating traumas,and the aberrant proliferation of astrocy.es usually.causes neurological ***,the mechanism underly.ng astrocy.e over-proliferation after SCI is ***2c(glutamate ionotropic receptor ty.e 2c)play. an essential role in cell *** bioinformatic analy.is indicated that Grin2c and Ca^(2+)transport functions were inhibited in astrocy.es after *** of Grin2c stimulated astrocy.e proliferation by.inhibiting the Ca^(2+)/calmodulin-dependent protein kinase 2b(CaMK2b)pathway.in *** screening different inflammatory.factors,interleukin 1α(IL1α)was further found to inhibit Grin2c/Ca^(2+)/CaMK2b and enhance astrocy.e proliferation in an oxidative damage *** of IL1αusing neutralizing antibody.resulted in increased Grin2c expression and the inhibition of astrocy.e proliferation ***,this study.suggests that IL1αpromotes astrocy.e proliferation by.suppressing the Grin2c/Ca^(2+)/CaMK2b pathway.after SCI,revealing a novel pathological mechanism of astrocy.e proliferation,and may.provide potential targets for SCI repair.

关键词： IL1α Grin2c Astrocy.e Spinal cord injury

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Quantum phase transition of the Jay.es-Cummings model

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Science China(Phy.ics,Mechanics & Astronomy. 2024年第1期67卷 1-9页

作者： Cheng Liu Jin-feng Huang Key.Laboratory.of Low-Dimensional Quantum Structures and Quantum Control of Ministry.of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsInstitute of Interdisciplinary StudiesHunan Normal UniversityChangsha 410081China

Herein,we propose an experimentally.feasible scheme to show the quantum phase transition of the Jay.es-Cummings(JC)model by.modulating the transition frequency.of a two-level sy.tem in a quantum Rabi model with strong *** tuning the modulation frequency.and amplitude,the ratio of the effective coupling strength of the rotating terms to the effective cavity.atomic transition)frequency.can enter the deep-strong coupling regime,while the counter-rotating terms can be ***,a deep-strong JC model is *** ratio of the coupling strength to resonance frequencies in the deep-strong JC model is two orders of magnitude larger than the corresponding ratio in the original quantum Rabi *** scheme can be employ.d in atom-cavity.resonance and off-resonance cases,and it is valid over a broad *** nonzero average cavity.photons of the ground state indicate the emergence of a quantum phase ***,we demonstrate the dependence of the phase diagram on the atom-cavity.detuning and modulation *** the parameters used in our scheme are within the reach of current experimental *** scheme provides a new mechanism for investigating the critical phenomena of finite-sized sy.tems without requiring classical field limits,thereby.opening a door for study.ng fundamental quantum phenomena occurring in the ultrastrong and even deep-strong coupling regimes.

关键词： Jay.es-Cummings model quantum phase transition frequency.modulation

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Dy.amic characteristics and application of dual throat fluidic thrust vectoring nozzle

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Chinese Journal of Aeronautics 2024年第9期37卷 85-99页

作者： Buxian XU Dongping HU Lihao feng Fluid Mechanics Key.Laboratory.of Ministry.of Education Beihang UniversityBeijing 100191China State Key.Laboratory.of Clean and Efficient Turbomachinery.Power Equipment Dongfang Electric Corporation Dongfang Turbine Co.LTDDeyang 618000China

Thrust vectoring technology.play. an important role in improving the maneuverability.of *** order to overcome the disadvantages of mechanical thrust vectoring nozzles,such as complications of structure and significant increases in weight and cost,fluidic thrust vectoring noz-zles are *** Throat fluidic thrust vectoring Nozzle(DTN)has received wide attention due to its excellent thrust vectoring efficiency.and minimal thrust *** this study.three-dimensional unsteady.numerical simulations of a single axisy.metric DTN are conducted first to analy.e its dy.amic *** the pitch and y.w control characteristics of DTN equipped on a fly.ng-wing aircraft are *** is found that the dy.amic response will experience three stages:rapid-deflecting stage,oscillating stage,and steady.stage.A complete recirculation zone forms at the end of the rapid-deflecting stage,which pushes the primary.flow to attach to the wall opposite the secondary.***,the exhaust flow is *** terms of DTN's appli-cation,the DTN equipped on the fly.ng-wing aircraft is capable of providing effective pitch and y.w moments at all angles of attack and Mach *** addition,continuous pitch and y.w moments can be obtained by.adjusting the secondary.mass flow *** control moment is gen-erated due to the asy.metrical pressure distribution of nozzle surface,which is mainly.contributed by.the pressure decrease on the secondary.injection ***,the DTN equipped on the fly.ng-wing aircraft has a relatively.high thrust vectoring efficiency.of around 5°/%and a thrust coefficient of around 0.95 when nozzle pressure ratio equals *** results provide an important theoretical basis for the practical application of DTN.

关键词： Dual throat nozzle Dy.amic response charac-teristic Flowcontrol Fly.ng-wing aircraft

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A low-frequency.and broadband wave-insulating vibration isolator based on plate-shaped metastructures

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Applied Mathematics and Mechanics(English Edition) 2024年第7期45卷 1171-1188页

作者： Wei WEI feng GUAN Xin FANG College of Intelligent Science National University of Defense TechnologyChangsha410073China Naval Research Academy Beijing100161China

A metamaterial vibration isolator,termed as wave-insulating isolator,is proposed,which preserves enough load-bearing capability.and offers ultra-low and broad bandgaps for greatly.enhanced wave *** consists of plate-shaped metacells,whose sy.metric and antisy.metric local resonant modes offer several low and broad mode bandgaps although the complete bandgap remains high and *** bandgap mechanisms,vibration isolation properties,effects of key.parameters,and robustness to complex conditions are *** experimentally.demonstrated,the wave-insulating isolator can improve the vibration insulation in the ranges of[50 Hz,180 Hz]and[260 Hz,400 Hz]by.15 dB and 25 dB,respectively.in contrast to the conventional isolator with the same first resonant frequency.

关键词： metamaterial and metastructure vibration isolation bandgap wave insulation plate

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Love wave propagation in one-dimensional piezoelectric quasicry.tal multilay.red nanoplates with surface effects

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Applied Mathematics and Mechanics(English Edition) 2024年第4期45卷 619-632页

作者： Xin feng Liaoliang KE y.ng GAO College of Science China Agricultural UniversityBeijing 100083China School of Mechanical Engineering Tianjin UniversityTianjin 300350China

The exact solutions for the propagation of Love waves in one-dimensional(1D)hexagonal piezoelectric quasicry.tal(PQC)nanoplates with surface effects are *** electro-elastic model is developed to investigate the anti-plane strain problem of Love wave *** introducing three shape functions,the wave equations and electric balance equations are decoupled into three uncorrelated *** the boundary.conditions of the top surface on the covering lay.r,the interlay.r interface,and the matrix,a dispersive equation with the influence of multi-phy.ical field coupling is provided.A surface PQC model is developed to investigate the surface effects on the propagation behaviors of Love waves in quasicry.tal(QC)multilay.red structures with nanoscale thicknesses.A novel dispersion relation for the PQC structure is derived in an explicit closed form according to the non-classical mechanical and electric boundary.*** examples are given to reveal the effects of the boundary.conditions,stacking sequence,characteristic scale,and phason fluctuation characteristics on the dispersion curves of Love waves propagating in PQC nanoplates with surface effects.

关键词： piezoelectric quasicry.tal(PQC)material multilay.red plate dispersion characteristic surface effect

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