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Investigating the p-Ω interactions and correlation functions

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Science China(physics,Mechanics & Astronomy) 2025年

作者： Ye Yan Qi Huang Youchang Yang Hongxia Huang Jialun Ping department of physics Nanjing Normal University School of Science Guizhou University of Engineering Science

Motivated by experimental measurements, we investigate the p-Ω correlation functions and interactions on the basis of a quark model. By solving the inverse scattering problem with channel coupling, we renormalize the coupling to other channels into an effective single-channel p-Ω potentials. The effects of Coulomb interaction and spin-averaging are also discussed. According to our results, the depletion of the p-Ω correlation functions, which is attributed to the JP= 2+bound state not observed in the ALICE Collaboration's measurements(Nature 588, 232（2020）), can be explained by the contribution of the attractive JP= 1+component in spin-averaging. So far, we have provided a consistent description of the p-Ω system from the perspective of the quark model, including the energy spectrum, scattering phase shifts, and correlation functions. The existence of the p-Ω bound state has been supported by all three aspects. Additionally, a sign of the p-Ω correlation function's subtle sub-unity part can be seen in experimental measurements, which warrants more precise verification in the future.

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Merging bound states in the continuum in an open acoustic resonator

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Science China(physics,Mechanics & Astronomy) 2025年第1期68卷 120-127页

作者： Lujun Huang Bin Jia Artem S.Pilipchuk Sibo Huang Chen Shen Almas F.Sadreev Yong Li Andrey E.Miroshnichenko School of physics and Electronic Sciences East China Normal UniversityShanghai 200241China Institute of Acoustics Tongji UniversityShanghai 200092China L.V.Kirensky Institute of physics Krasnoyarsk 660036Russia department of Mechanical Engineering Rowan UniversityGlassboro 08028USA School of Engineering and Technology University of New South Wales at CanberraACT 2610Australia

Bound states in the continuum(BICs)are perfectly localized resonances despite embedding in the continuum ***,an isolated BIC is very sensitive to the structure ***,we report merging acoustic BICs in a single open resonator,robust against the structure *** find that both symmetry-protected BIC and Friedrich-Wintgen BIC are sustained in a single coupled waveguide-resonator *** varying the height and length of the resonator,these two BICs move toward each other and merge into a single one at a critical *** to an individual BIC,the merged BIC is robust against fabrication error because its Q-factor is proportional toΔL^(−4),whereΔL embodies the structure *** essence of this extraordinary phenomenon is perfectly explained by the two-and three-level approximations of the effective non-Hermitian ***,we present direct experimental demonstrations of the moving and merging of BICs in a coupled 3D waveguide-resonator,which are evidenced by the vanishing of the linewidth of Fano resonance in the transmission *** results may find exciting applications in designing high-quality acoustic sources,sensors and filters.

关键词： acoustic resonances bound state in the continuum high-Q resonances

Construction of 3D porous Cu_(1.81)S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 191-200页

作者： Chen Chen Hongyu Xue Qilin Hu Mengfan Wang Pan Shang Ziyan Liu Tao Peng Deyang Zhang Yongsong Luo Key Laboratory of Microelectronics and Energy of Henan Province Henan Joint International Research Laboratory of New Energy Storage TechnologyCollege of Physics and Electronic EngineeringXinyang Normal UniversityXinyang 464000China School of physics and Electronic Engineering Nanyang Normal UniversityNanyang 473061China

Transition metal sulfides have great potential as anode mterials for sodium-ion batteries(SIBs)due to their high theoretical specific ***,the inferior intrinsic conductivity and large volume variation during sodiation-desodiation processes seriously affect its high-rate and long-cyde performance,unbeneficial for the application as fast-charging and long-cycling SIBs ***,the three-dimensional porous Cu_(1.81)S/nitrogen-doped carbon frameworks(Cu_(1.81)S/NC)are synthesized by the simple and facile sol-gel and annealing processes,which can accommodate the volumetric expansion of Cu_(1.81)S nanoparticles and accelerate the transmission of ions and electrons during Na^(+)insertion/extraction processes,exhibiting the excellent rate capability(250.6 mA·g^(-1)at 20.0 A·g^(-1))and outstanding cycling stability(70% capacity retention for 6000 cycles at 10.0 A·g^(-1))for ***,the Na-ion full cells coupled with Na_(3)V_(2)(PO_(4))_(3)/C cathode also demonstrate the satisfactory reversible specific capacity of 330.5 mAh·g^(-1)at 5.0 A·g^(-1)and long-cycle performance with the 86.9% capacity retention at 2.0 A·g^(-1)after 750 *** work proposes a promising way for the conversionbased metal sulfides for the applications as fast-charging sodium-ion battery anode.

关键词： copper sulfide nanoparticles porous carbon framework fast charging long-cycle performance sodium-ion full batteries

Strong coupling between a quasi-two-dimensional perovskite and a honeycomb plasmonic nanocone array

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Photonics Research 2025年第1期13卷 80-86页

作者： ZIXUAN SONG XUEXUAN HUANG LINGYAO LI LEYI ZHAO JIAMIN XIAO JIAZHI YUAN ZHIHANG WANG CHENGHAO BI WENXIN WANG Qingdao Innovation and Development Center of Harbin Engineering University College of physics and Optoelectronic Engineering Harbin Engineering University department of Applied physics The Hong Kong Polytechnic University

Recently organic-inorganic perovskite has been established as a promising platform for achieving room temperature exciton-polaritons, attributable to its superior optical coherence and robust exciton binding ***, when interfaced with metallic surfaces, the rapid degradation and quenching effect in perovskite have presented significant challenges, which critically hinders the exploration of light-matter interactions within metallic plasmonic structures. In this study, we report a quasi-two-dimensional lead halide perovskite that demonstrates a pronounced strong coupling phenomenon within an array of aluminum nanocones. The investigated quasi-two-dimensional perovskite structure exhibits high photoluminescence quantum efficiency and improved stability against metallic-induced degradation. Interestingly, the periodical arraying in honeycomb formation of plasmonic structure has advantages in angle-dependent dispersions and the loss neutralizing effectively. Besides,the plasmonic cone lattice characterized by its collective surface lattice resonance, features an exceptionally small mode volume and high quality, enhancing its interaction with the perovskite. A significant Rabi splitting of243 meV is observed at an incident angle of 30°. The dynamics of the Rabi oscillation is revealed by transient absorption spectra and theoretically analyzed by cavity quantum electrodynamics. This advancement in polariton research paves the way for novel applications, including quantum sources, enhanced photon-electron conversion efficiencies, and low-threshold lasing.

关键词： Cavity quantum electrodynamics Light matter interactions Optical constants Quantum efficiency Surface plasmon resonance Ti:sapphire lasers

Characteristics of Energy Fluxes and Cold Frontal Effects on Energy Exchange over a Boreal Lake

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Advances in Atmospheric Sciences 2025年第2期42卷 357-372页

作者： Lujun XU Huizhi LIU Ivan MAMMARELLA Aki VÄHÄ Joonatan ALA-KÖNNI Xuefei LI Qun DU Yang LIU Timo VESALA State Key Laboratory of Atmospheric Boundary Layer physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100864China department of Atmospheric Sciences Yunnan UniversityKunming 650091China Institute for Atmospheric and Earth System Research/physics Faculty of ScienceUniversity of HelsinkiHelsinki 00014Finland

Understanding the characteristics and variations of heat exchange and evaporation of lakes is important for regional water resource management and sustainable *** on eddy covariance measurements over Lake Vanajavesi in southern Finland,characteristics of energy fluxes and cold frontal effects on energy exchange were *** lake acted as a heat sink in spring and summer and a heat source in *** latent heat flux reached its minimum value in the morning and peaked in the *** diurnal variation of sensible heat flux was opposite to that of latent heat *** factors for the sensible heat flux were mainly the lake-air temperature difference and the product of lake-air temperature difference and wind *** latent heat flux was mainly affected by the vapor pressure deficit and the product of vapor pressure deficit and wind *** annual mean values of bulk transfer coefficients for momentum,heat,and water vapor were 1.98×10^(-3),1.62×10^(-3),and 1.31×10^(-3),*** transfer coefficients for heat and water vapor were not equal,indicating that the parameterization of energy exchange in numerical models,where the assumption that the heat coefficient equals the water vapor coefficient needs *** the ice-free season,cold fronts resulted in 28 sensible heat pulses and 17 latent heat pulses,contributing to 50.59%and 34.89%of sensible and latent heat exchange in Lake *** results indicate that cold fronts significantly impact the surface energy budget and evaporation over lakes.

关键词： sensible heat flux latent heat flux roughness length bulk transfer coefficient cold front

Insights into novel indium catalyst to kW scale low cost,high cycle stability of iron-chromium redox flow battery

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Green Energy & Environment 2025年第2期10卷 410-421页

作者： Yingchun Niu Yinping Liu Tianhang Zhou Chao Guo Guangfu Wu Wenjie Lv Ali Heydari Bo Peng Chunming Xu Quan Xu State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing102249China department of Applied physics Aalto UniversityFI-00076AaltoFinland

Iron-chromium flow batteries(ICRFBs)have emerged as an ideal large-scale energy storage device with broad application prospects in recent *** of the Cr^(3+)/Cr^(2+)redox reaction activity and inhibition of the hydrogen evolution side reaction(HER)are essential for the development of ICRFBs and require a novel catalyst ***,elucidating the underlying mechanisms for modulating catalyst behaviors remains an unresolved ***,we show a novel precisely controlled preparation of a novel thermal-treated carbon cloth electrode with a uniform deposit of low-cost indium catalyst *** density functional theory analysis reveals the In catalyst has a significant adsorption effect on the reactants and improves the redox reaction activity of Cr^(3+)/Cr^(2+).Moreover,H+is more easily absorbed on the surface of the catalyst with a high migration energy barrier,thereby inhibiting the occurrence of *** assembled ICRFBs have an average energy efficiency of 83.91%at 140 mA cm^(-2),and this method minimizes the electrodeposition process and cleans the last obstacle for industry long cycle operation *** ICRFBs exhibit exceptional long-term stability with an energy efficiency decay rate of 0.011%per cycle at 1000 cycles,the lowest ICRFBs reported so ***,this study provides a promising strategy for developing ICRFBs with low costs and long cycle life.

关键词： Iron-chromium flow batteries In catalyst Hydrogen evolution side reaction Cycle stability Industry usage

Insight into physical properties of lutetium-based double half-Heusler alloys LuXCo_(2)Bi_(2)(X=V,Nb and Ta)

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Journal of Rare Earths 2025年第1期43卷 199-208,I0008页

作者： Saber Saad Essaoud Said Al Azar Ahmad A.Mousa Anas Y.Al-Reyahi Nabil Al Aqtash Mohammed Elamin Ketfi department of physics Faculty of ScienceUniversity of M'sila28000M'silaAlgeria Laboratoire de Physique des Particules et Physique Statistique Ecole Normale Superieure-KoubaBP 92Vieux-Kouba16050AlgiersAlgeria department of physics Faculty of ScienceZarqa UniversityZarqa13132Jordan department of Basic Sciences Middle East UniversityAmman183Jordan Applied Science Research Center Applied Science Private UniversityAmman11937Jordan department of physics Faculty of ScienceThe Hashemite UniversityP.0.Box 330127Zarqa13133Jordan department of Electronics Faculty of TechnologyUniversity of M'sila28000M'silaAlgeria

Based on the density functional theory,the double half-Heusler alloys LuXCo_(2)Bi_(2)(X=V,Nb,and Ta)were studied to predict their structural,thermodynamic,thermoelectric,and optical *** the considered alloys are thermodynamically stable and have semiconductor behavior with indirect band gaps of 0.62,0.75,and 0.8 eV for LuVCo_(2)Bi_(2),LuNbCo_(2)Bi_(2),and LuTaCu_(2)Bi_(2),*** investigated compounds exhibit semiconducting behavior with energy gaps below 0.8 *** impact of heat and pressure on thermodynamic coefficients was evaluated,and the influence of charge carriers on the temperature-dependent properties was studied using the semi-classical Boltzmann *** studied compounds were characterized by their low lattice thermal conductivity at room temperature and low thermal expansion *** alloys exhibit substantial absorption coefficients in the ultraviolet(UV)light region,high optical conductivity,and high reflectivity in the visible light region,making them highly appealing materials for applications in the energy and electronics sectors.

关键词： Double half-Heusler Abinitio calculation Optical coefficients Thermoelectricity Lattice thermal conductivity Rareearths

RGB Color-Discriminable Photonic Synapse for Neuromorphic Vision System

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Nano-Micro Letters 2025年第4期17卷 39-62页

作者： Bum Ho Jeong Jaewon Lee Miju Ku Jongmin Lee Dohyung Kim Seokhyun Ham Kyu-Tae Lee Young-Beom Kim Hui Joon Park department of Organic and Nano Engineering&Human-Tech Convergence Program Hanyang UniversitySeoul 04763Korea department of Semiconductor Engineering Hanyang UniversitySeoul 04763Korea department of Mechanical Engineering Hanyang UniversitySeoul 04763Korea department of physics Inha UniversityIncheon 22212Korea

To emulate the functionality of the human retina and achieve a neuromorphic visual system,the development of a photonic synapse capable of multispectral color discrimination is of paramount ***,attaining robust color discrimination across a wide intensity range,even irrespective of medium limitations in the channel layer,poses a significant ***,we propose an approach that can bestow the color-discriminating synaptic functionality upon a three-terminal transistor flash memory even with enhanced discriminating *** incorporating the strong induced dipole moment effect at the excitation,modulated by the wavelength of the incident light,into the floating gate,we achieve outstanding RGB color-discriminating synaptic functionality within a remarkable intensity range spanning from 0.05 to 40 mW cm^(-2).This approach is not restricted to a specific medium in the channel layer,thereby enhancing its *** effectiveness of this color-discriminating synaptic functionality is demonstrated through visual pre-processing of a photonic synapse array,involving the differentiation of RGB channels and the enhancement of image contrast with noise ***,a convolutional neural network can achieve an impressive inference accuracy of over 94%for Canadian-Institute-For-Advanced-Research-10 colorful image recognition task after the *** proposed approach offers a promising solution for achieving robust and versatile RGB color discrimination in photonic synapses,enabling significant advancements in artificial visual systems.

关键词： Organic field-effect transistor Photonic synapse Excited-state dipole moment RGB color discrimination Neuromorphic visual system

High-Quality Single Crystal of Kitaev Spin Liquid Candidate Material RuBr_(3) Synthesized under High Pressure

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Chinese physics Letters 2025年第2期42卷 249-254页

作者： Bowen Zhang Xiangjun Li Limin Yan Wenbo Li Nana Li Jianfa Zhao Xiaobing Liu Shun-Li Yu Zhiwei Hu Wenge Yang Runze Yu Center for High-Pressure Science and Technology Advanced Research Beijing 100093China Laboratory of High-Pressure physics and Material Science School of Physics and Physical EngineeringQufu Normal UniversityQufu 273165China Institute of physics Chinese Academy of SciencesBeijing 100190China National Laboratory of Solid-State Microstructures and department of physics Nanjing UniversityNanjing 210093China Max-Planck Institute for Chemical physics of Solids Dresden 01187Germany

Kitaev quantum spin liquids have attracted significant attention in condensed matter physics over the past *** understand their emergent quantum phenomena,high-quality single crystals of substantial size are ***,we report the synthesis of single crystals of the Kitaev quantum spin liquid candidate RuBr_(3),achieving millimeter-sized crystals through a self-flux method under high pressure and high temperature *** crystals exhibit well-defined cleavage planes with a lustrous *** characterizations exhibit a narrow band-gap semiconducting behavior with 0.13 eV and 0.11 eV band-gap in ab plane and along𝑐axis,*** measurement shows a transition to antiferromagnetic(AFM)state at approximately 29K both in ab plane and along the c ***,the N′eel temperature increases to 34K with an applied magnetic field of up to 7T in the ab plane,but without any change along𝑐*** large size and high quality of RuBr3 single crystals provide a valuable platform for investigating various interactions,particularly the Kitaev interaction,and for elucidating the intrinsic physical properties of Kitaev quantum spin liquids.

关键词： quantum narrow sized