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Enhancing the Goos-Hänchen shift based on quasi-bound states in the continuum through material asymmetric dielectric compound gratings

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Chinese Physics b 2024年第3期33卷 393-400页

作者：江孝伟方彬占春连 College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China College of Information Engineering Quzhou College of TechnologyQuzhou 324000China

Quasi-bound state in the continuum(QbIC)resonance is gradually attracting attention and being applied in Goos-Hänchen(GH)shift enhancement due to its high quality(Q)factor and superior optical ***,symmetry-protected QbIC resonance is often achieved by breaking the geometric symmetry,but few cases are achieved by breaking the material *** paper proposes a dielectric compound grating to achieve a high Q factor and high-reflection symmetry-protectede QbIC resonance based on material *** calculations show that the symmetry-protected QbIC resonance achieved by material asymmetry can significantly increase the GH shift up to-980 times the resonance wavelength,and the maximum GH shift is located at the reflection peak with unity *** paper provides a theoretical basis for designing and fabricating high-performance GH shift tunable metasurfaces/dielectric gratings in the future.

关键词： bound state in the continuum Goos-Hänchen shift dielectric compound grating material asymmetry

Subpicosecond laser ablation behavior of a magnesium target and crater evolution:Molecular dynamics study and experimental validation

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Chinese Physics b 2024年第7期33卷 613-622页

作者：江国龙周霞 State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024China

The micro-ablation processes and morphological evolution of ablative craters on single-crystal magnesium under subpicosecond laser irradiation are investigated using molecular dynamics(MD) simulations and *** simulation results exhibit that the main failure mode of single-crystal Mg film irradiated by a low fluence and long pulse width laser is the ejection of surface atoms,which has laser-induced high ***,under high fluence and short pulse width laser irradiation,the main damage mechanism is nucleation fracture caused by stress wave reflection and superposition at the bottom of the *** addition,Mg[0001] has higher pressure sensitivity and is more prone to ablation than Mg[0001].The evolution equation of crater depth is established using multi-pulse laser ablation simulation and verified by *** results show that,under multiple pulsed laser irradiation,not only does the crater depth increase linearly with the pulse number,but also the quadratic term and constant term of the fitted crater profile curve increase linearly.

关键词： laser-material interaction molecular dynamics(MD)simulation ablation crater morphology magnesium

Preparation and performance of novel magnetic phase-change-microcapsule-supported bi_(2)wO_(6)catalyst

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Chinese Chemical Letters 2024年第3期35卷 158-161页

作者： Zhuoni jiang Zhiqing Ge Shuo Yan Jingjing Shu Mozhen wang Xuewu Ge Key Laboratory of Precision and Intelligent Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Southwest University of Science and TechnologyMianyang 621010China

The design and synthesis of novel photocatalyst with self-temperature control function is an important topic in the field of advanced environmental functional *** this work,submicron-sized magnetic phase change microcapsules composed of paraffin core and Fe_(3)O_(4)-loaded silica shell are prepared,on which the bi_(2)wO_(6)crystals is grown in situ through hydrothermal reaction to obtain novel magnetic phase-change-microcapsule-supported bi_(2)wO_(6)catalyst(MP@FS/bwO).The MP@FS/bwO has a paraffin encapsulation ratio of 57.1%,and the phase change enthalpy of 105.1 J/g in a temperature range of 50–60℃,which endows the MP@FS/bwO with a certain self-temperature regulation ***@FS/bwO shows excellent catalytic performance in the decomposition of rhodamine b under the simulated sunlight *** the light source is turned off,it still has good catalytic ability by maintaining high temperature due to its temperature control function based on the phase transition *** MP@FS/bwO can be easily recycled by magnetic separation and shows good structural stability and *** work provides a new idea for the development of long-effect and energy-saving outdoor photocatalysts.

关键词： Photocatalyst Phase change microcapsules Self-temperature regulation bismuth tungstate Magnetic separation

Two-dimensional anisotropic vortex quantum droplets in dipolar bose−Einstein condensates

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Frontiers of physics 2024年第2期19卷 205-211页

作者： Guilong Li Xunda jiang bin Liu Zhaopin Chen boris A.Malomed Yongyao Li School of Physics and Optoelectronic Engineering Foshan UniversityFoshan 528225China Physics Department and Solid-State Institute TechnionHaifa 32000Israel Department of Physical Electronics School of Electrical EngineeringFaculty of EngineeringTel Aviv UniversityTel Aviv 69978Israel Instituto de Alta Investigación Universidad de TarapacáCasilla 7DAricaChile Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro−nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Creation of stable intrinsically anisotropic self-bound states with embedded vorticity is a challenging ***,no such states in bose−Einstein condensates(bECs)or other physical settings were *** bEC suggests a unique possibility to predict stable two dimensional anisotropic vortex quantum droplets(2D-AVQDs).we demonstrate that they can be created with the vortex axis oriented perpendicular to the polarization of *** stability area and characteristics of the 2D-AVQDs in the parameter space are revealed by means of analytical and numerical ***,the rotation of the polarizing magnetic field is considered,and the largest angular velocities,up to which spinning 2D-AVQDs can follow the rotation in clockwise and anti-clockwise directions,are *** between moving 2D-AVQDs are studied too,demonstrating formation of bound states with a vortex−antivortex−vortex structure.A stability domain for such stationary bound states is *** dipolar states,that can be readily implemented by means of phase imprinting,quickly transform into robust 2D-AVQDs,which suggests a straightforward possibility for the creation of these states in the experiment.

关键词： dipolar bose−Einstein condensate anisotropic vortex quantum droplets

Comprehensive characterization of cell disulfidptosis in human cancers:An integrated pan-cancer analysis

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Genes & Diseases 2024年第4期11卷 5-8页

作者： Guo Zhao Yale jiang Yuning wang Shuhang wang ning Li Clinical Trial Center National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

Excessive accumulation of disulfide molecules,like cystine,can induce disulfide stress and high toxicity in cells,but the reduced form of nicotinamide adenine dinucleotide phosphate can reverse this process and mitiga... 详细信息

关键词： disulfide cancer characterization

bIG HAnKEL OPERATORS On HARDY SPACES OF STROnGLY PSEUDOCOnVEX DOMAInS

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Acta Mathematica Scientia 2024年第3期44卷 789-809页

作者：陈伯勇江良英 School of Mathematical Sciences Fudan UniversityShanghai200433China Department of Statistics and Mathematics Shanghai Lixin University of Accounting and FinanceShanghai201209China

In this article,we investigate the(big) Hankel operator H_(f) on the Hardy spaces of bounded strongly pseudoconvex domains Ω in C^(n).we observe that H_(f ) is bounded on H~p(Ω)(1

belongs to bMO and we ... 详细信息

In this article,we investigate the(big) Hankel operator H_(f) on the Hardy spaces of bounded strongly pseudoconvex domains Ω in C^(n).we observe that H_(f ) is bounded on H~p(Ω)(1 belongs to bMO and we obtain some characterizations for Hf on H^(2)(Ω) of other pseudoconvex *** these arguments,Amar's L^(p)-estimations and berndtsson's L^(2)-estimations for solutions of the ■_(b)-equation play a crucial *** addition,we solve Gleason's problem for Hardy spaces H^(p)(Ω)(1 ≤p≤∞) of bounded strongly pseudoconvex domains.

关键词： Hankel operator Hardy space bergman space pseudoconvex domain

Incorporation sodium ions into monodisperse lead-free double perovskite Cs_(2)AgbiCl_(6) nanocrystals to improve optical properties

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Chinese Chemical Letters 2024年第3期35卷 549-553页

作者： Song wang Ying Xie wenchao jiang binghang Liu Keying Shi Kai Pan Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationHeilongjiang UniversityHarbin 150080China School of Materials Science and Engineering Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and ApplicationsChangzhou UniversityChangzhou 213164China State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Lead-free double perovskite nanocrystals(nCs)have emerged as a promising candidate in the optical field,owing to their non-toxic,good moist heat and chemical ***,their poor optical properties limited their *** improve the optical properties of lead-free double perovskite nCs,metal ion doping or alloying had been suggested as a promising ***,we prepared monodisperse,uniformly sized,cubic morphology of Cs_(2)AgbiCl_(6)nCs with different na^(+)incorporation amounts via a simple hot-injection *** na^(+)incorporation broke the parity-forbidden transition by reducing the inversion symmetry of the electron wave function at the Ag site,which changed the parity of the self-trapped exciton wave function and thus allowed radiative *** a result,the photoluminescence quantum yield(PLQY)of na^(+)-alloyed Cs_(2)AgbiCl_(6)nCs(12.1%)was higher than that of Cs_(2)AgbiCl_(6)nCs(2.4%),and the exciton lifetime of na^(+)-alloyed Cs_(2)AgbiCl_(6)nCs increased to 36.98 ns from 17.58 ns for Cs_(2)AgbiCl_(6)*** adjusting the amount of na^(+)incorporation,the band gap of Cs_(2)AgbiCl_(6)nCs can be significantly tuned from~2.90 eV to~3.50 ***,the temperature-dependent photoluminescence spectra indicated that the na^(+)-alloyed Cs_(2)AgbiCl_(6)nCs possessed higher longitudinal optical phonon energy and exciton binding energy compared to Cs_(2)AgbiCl_(6)*** suggested that there were strong exciton-phonon interactions during exciton recombination,a reduced probability of non-radiative processes,and excellent thermal *** offers a promising strategy for improving the optical properties of lead-free double perovskite nCs,and have the potential to replace traditional lead halide perovskite nCs in future optoelectronic applications.

关键词： nanocrystals Alloy Double perovskites Optical properties Exciton binding energy

Ab_(2)-type rare earth-based compounds with C-15 structure:Looking for reversible hydrogen storage materials

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Journal of Rare Earths 2024年第5期42卷 803-816,I0001页

作者： Hao Shen Junxian Zhang Valerie Paul-boncour Ping Li Zhinian Li Yuanfang wu Lijun jiang national Engineering Research Center of nonferrous Metals Materias and Products for new Energy GRINM Group Co.LtdBeijing00088China Univ Paris Est Creteil CNRSICMPEUMR 71822 rue Henri Dunant94320ThiaisFrance Institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China GRIMAT Engineering Institute Co. Ltd.Beijing101407China

Ab_(2)-type(A=rare earth,b=transition metal)intermetallic compounds with C15 structure can easily absorb large amount of hydrogen,showing their potential use as hydrogen storage *** crucial problem hindering their application is hydrogen induced amorphization(HIA),which leads to the irreversible hydrogen sorption *** stability of the Ab_2 Laves phase compounds,the structural properties,the hydrogenation properties and the controlling factors of HIA are discussed in this *** with other factors,the atomic radii ratio r_A/r_b is the most important one influencing the ***-element substitution is an efficient way to suppress or limit HIA and may enable Ab_2 compounds to be suitable for hydrogen storage.

关键词： Rare earth-based Ab_2-type compounds Hydrogenation properties Hydrogen induced amorphization Elemental substitution

Image Enhancement via Associated Perturbation Removal and Texture Reconstruction Learning

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IEEE/CAA Journal of Automatica Sinica 2024年第11期11卷 2253-2269页

作者： Kui jiang Ruoxi wang Yi Xiao Junjun jiang Xin Xu Tao Lu IEEE the School of Computer Science and Technology Harbin Institute of Technology Zhengzhou Research Institute Harbin Institute of Technology the School of Artificial Intelligence Jianghan University the School of Geodesy and Geomatics Wuhan University the Hubei Province Key Laboratory of Intelligent Information Processing and Real-Time Industrial System Wuhan University of Science and Technology the School of Computer Science and Engineering and also with the Hubei Province Key Laboratory of Intelligent Robot Wuhan Institute of Technology

Degradation under challenging conditions such as rain, haze, and low light not only diminishes content visibility, but also results in additional degradation side effects, including detail occlusion and color distortion. However, current technologies have barely explored the correlation between perturbation removal and background restoration, consequently struggling to generate high-naturalness content in challenging scenarios. In this paper, we rethink the image enhancement task from the perspective of joint optimization: Perturbation removal and texture reconstruction. To this end, we advise an efficient yet effective image enhancement model, termed the perturbation-guided texture reconstruction network(PerTeRnet). It contains two subnetworks designed for the perturbation elimination and texture reconstruction tasks, respectively. To facilitate texture recovery,we develop a novel perturbation-guided texture enhancement module(PerTEM) to connect these two tasks, where informative background features are extracted from the input with the guidance of predicted perturbation priors. To alleviate the learning burden and computational cost, we suggest performing perturbation removal in a sub-space and exploiting super-resolution to infer high-frequency background details. Our PerTeRnet has demonstrated significant superiority over typical methods in both quantitative and qualitative measures, as evidenced by extensive experimental results on popular image enhancement and joint detection tasks. The source code is available at https://***/kuijiang94/PerTeRnet.

关键词： Association learning attention mechanism image enhancement perturbation modeling