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Chinese Physics Letters 2012年第3期29卷 239-242页

作者： ding bin-Feng Department of Physics and Electronic Information Langfang Teachers CollegeLangfang 065000

A ZnO layer with rather good crystalline quality(Xmin=9.4%)is grown on a sapphire substrate by plasma enhanced chemical vapor deposition(PECVD).Rutherford backscattering(RBS)/channeling and high-resolution x-ray diffraction(XRD)are used to characterize the elastic strain in the ZnO *** tetragonal distortion is positive and depth *** is highest near the interface and decreases towards the sample *** combining the results of RBS and XRD,the average elastic strains in the parallel and the perpendicular directions can be calculated to be 0.50%and-0.17%,respectively.

关键词： sapphire surface layer

Description of the Triaxial Strongly Deformed Bands in 160,161Tm and 163Tm

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Chinese Physics Letters 2010年第6期27卷 48-51页

作者： ZHANG Da-Li ding bin-Gang Department of Physics Huzhou Teacher's College Huzhou 313000

Properties of the triaxial strongly deformed （ TSD） bands of 160,161 Tin and 163Tm are investigated systematically within the supersymmetry scheme including ma^y-body interactions and a perturbation possessing SO（5）（or SU（5）） symmetry on the rotational symmetry. Quantitatively good results of the γ-ray energies, the dynamical moments of inertia and the spin of the TSD bands in 160,161Tm and 163Tm are obtained. The calculation shows that competition between the pairing and anti-pairing effects exist in these TSD bands. Meanwhile, the SU（3） symmetry in TSD bands is broken more seriously than that in superdeformed bands.

关键词： Description Triaxial Strongly Deformed Bands

Enhancement of Natural Convection for Cooling Active Antenna Unit Device in 5G Base Station

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Journal of Thermal Science 2022年第5期31卷 1551-1564页

作者： ZHANG Dexin ding bin ZHU Chuanyong GONG Liang College of New Energy China University of Petroleum(East China)Qingdao266580China

The Active Antenna Unit(AAU)on the outdoor tower is the key equipment to support the mobile communication of *** suppress the overheating of AAU in summer,effective cooling measures are *** the present study,a numerical model of an AAU device with two chips in the outdoor environment was established to explore the surface temperature distribution under a coupling heat transfer process with natural convection and solar radiation was ***,the effects of the fin number,the fin height and the heat flux were discussed on the cooling *** results proved that the fins with a number of 12 presented the best cooling performance in this *** contrast,increasing the height of fins was still an effective way to improve the cooling performance of fins in outdoor conditions and to resist the thermal shock of ***,punching through holes on the fins,adding graphite heat spreader and reducing surface emissivity are effective ways to improve the cooling *** the optimizations,the maximum temperature decreased by 3.5℃in *** other words,the contribution of these optimizations to the cooling performance was equivalent to an increase of fin height in 9 mm.

关键词： natural convection heat transfer enhancement structural optimization 5G base station

Semi-template based,biomimetic-architectured,and mechanically robust ceramic nanofibrous aerogels for thermal insulation

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Nano Research 2022年第6期15卷 5581-5589页

作者： Lvye Dou Yang Si Jianyong Yu bin ding Innovation Center for Textile Science and Technology College of TextilesDonghua UniversityShanghai 200051China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Energy efficient buildings require novel thermal insulators accompanied by lightweight,mechanically robust,fire resistant,and low thermal *** fibrous aerogels have emerged as promising candidates,however it’s difficult for these materials to achieve exceptional mechanical and thermal insulation performance ***,we demonstrate a unique semi-template method to fabricate biomimetic-architectured silica/carbon dual-fibrous aerogel with robust mechanical ***,aerogels with honeycomb-like cellular and nanofiber/nanonet cell wall were constructed by freezedrying the homogeneous dispersion of SiO_(2)nanofibers and cellulose nanofibers *** is worth noting that the biomimetic structure has been perfectly inherited even subjected to high-temperature *** a result,the excellent structural stability brought by the novel structure enables the aerogel to completely recover under large compression and buckling strain of 80%,and exhibit robust fatigue resistance over 200,000 *** importantly,the aerogels exhibit ultralow thermal conductivity(0.023 W·m^(−1)·K^(−1)),superior flame retardancy,together with excellent thermal insulation performance over a wide temperature ranging from−196 to 350°*** fabrication of such materials may provide new ideas for the development of next-generation thermal insulators for harsh conditions.

关键词： silica nanofiber carbon nanonet biomimetic-architectured aerogel mechanically robust thermal insulation

A Reliability Analysis of Calculated Results for Odd-Even and Odd-Odd Nuclei in Relativistic Mean-Field Theory

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Communications in Theoretical Physics 2006年第1X期46卷 113-118页

作者： ding bin-Gang ZHANG Da-Li LU ding-Hui School of Science Huzhou Teachers College Huzhou 313000 China Institute of Modern Physics Zhejiang University Hangzhou 310027 China

We calculate the binding energies of Ni, Cu, Xe, Cs, Pt, Au, Np, Pu isotope chains using two interaction parameter sets NL-3 and NL-Z, and compared the relative errors of the even-even nuclei with those of odd-even nuclei and odd-odd nuclei. We find that the errors of binding energy of odd-even and odd-odd nuclei are not bigger than the one of even-even nuclei. The result shows that comparing with even-even nuclei, there is no systematic error and approximation in the calculations of the binding energy of odd-even and odd-odd nuclei with relativistic mean-field theory. In addition, the result is explained theoretically.

关键词： relativistic mean-field theory binding energy even-even nuclei odd-even nuclei odd-odd nuclei

Level Structure of 83Rb in the Projected Shell Model

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Communications in Theoretical Physics 2002年第10期38卷 465-469页

作者： ding bin-Gang SHEN Shui-Fa Huzhou Teachers College Huzhou 313000 China Shanghai Institute of Nuclear Research the Chinese Academy of Sciences Shanghai 201800 China

The projected shell model is applied to the odd-proton nucleus 83 Rb. The results of theoretical calculationsabout the excited positive-parity yrast states and the negative-parity ground-state band are compared with experimentaldata, and the best reproduction of the experiment has been given by this model. In addition, a band diagram calculatedfor the negative-parity g.s. band is also shown in order to extract physics out of the numerical results.

关键词： projected shell model, yrast state, quadrupole deformation

Systematic Study on Triaxial Superdeformed Bands of Hf Isotopes

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Communications in Theoretical Physics 2009年第1期51卷 126-130页

作者： ZHANG Da-Li ding bin-Gang Department of Physics Huzhou Teacher＇s College Huzhou 313000 China

Properties of the triaxiai superdeformed （TSD） bands of Hf isotopes are investigated systematicaily within the supersymmetry scheme including many-body interactions and a perturbation possessing the SO（5）（or SU（5）） symmetry on the rotational symmetry. Quantitatively good results of the γ-ray energies, the dynamical moments of inertia, and the spin of the TSD bands in Hf isotopes are obtained. It shows that this approach is quite powerful in describing the properties of the triaxial superdeformation in Hf isotopes.

关键词： triaxial superdeformed bands dynamical moments of inertia Hf isotopes

Anomalous strain effect on the thermal conductivity of low-buckled two-dimensional silicene

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National Science Review 2021年第9期8卷 23-31页

作者： bin ding Xiaoyan Li Wuxing Zhou Gang Zhang Huajian Gao Institute of High Performance Computing A*STAR Centre for Advanced Mechanics and Materials Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University School of Materials Science and Engineering & Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and Technology School of Mechanical and Aerospace Engineering College of Engineering Nanyang Technological University

The thermal conductivity of two-dimensional materials, such as graphene, typically decreases when tensile strain is applied, which softens their phonon modes. Here, we report an anomalous strain effect on the thermal conductivity of monolayer silicene, a representative low-buckled two-dimensional (LB-2D)material. Reax FF-based molecular dynamics simulations are performed to show that biaxially stretched monolayer silicene exhibits a remarkable increase in thermal conductivity, by as much as 10 times the freestanding value, with increasing applied strain in the range of [0, 0.1], which is attributed to increased contributions from long-wavelength phonons. A further increase in strain in the range of [0.11, 0.18] results in a plateau of the thermal conductivity in an oscillatory manner, governed by a unique dynamic bonding behavior under extreme loading. This anomalous effect reveals new physical insights into the thermal properties of LB-2D materials and may provide some guidelines for designing heat management and energy conversion devices based on such materials.

关键词： low-buckled two-dimensional materials strain effect thermal conductivity bonding dynamics

Numerical Investigation on Heat Transfer Characteristics of Microencapsulated Phase Change Material Slurry in a Rectangular Minichannel

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Journal of Thermal Science 2024年第2期33卷 564-577页

作者： WANG Zhibin LI Zilong JIA Lisi ding bin CHEN Ying School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter Guangzhou510006China College of New Energy China University of Petroleum(East China)Qingdao266580China

Microencapsulation phase change material slurry(MEPCMS) becomes a potential working fluid for cooling high energy density miniaturized components,thanks to the latent heat absorption of particles in the heat transfer *** this work,the Discrete Phase Model(DPM) based on the Euler-Lagrangian method is used to numerically investigate the convective heat transfer characteristics of MEPCMS flowing through a rectangular minichannel with constant heat *** results show that particles of MEPCMS are mainly subjected to drag force during the *** so,they can migrate from the high-temperature region to the low-temperature region driven by the thermophoretic force,affecting the particle distribution and phase change ***,the Nux of the MEPCMS fluctuates due to particle phase change with varying specific heat ***,the value increases first,then decreases,and eventually increases again until it approaches the fully developed value of the pure base fluid as the particles gradually ***,the heat transfer performance of the MEPCMS is influenced by the combination of fluid inlet temperature fluid inlet velocity(v),and mass concentration(c_(m)) of MEPCM *** result shows that the maximum reduction of the maximum bottom wall temperature difference(ΔT_(w)) is 23.98% at T_(in)=293.15 K,v=0.15 m·s^(-1),c_(m)=10%.

关键词： Microencapsulated Phase Change Material Slurry(MPCMS) Discrete Phase Model(DPM) particle-fluid interaction force minichannel heat sink thermophoresis

Description of the Chiral Doublet Bands in ^(135)Nd and ^(136)Nd

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Chinese Physics Letters 2011年第5期28卷 76-79页

作者： ZHANG Da-Li ding bin-Gang Department of Physics Huzhou Teacher’s CollegeHuzhou 313000

The chiral doublet bands in^(135)Nd and^(136)Nd are investigated systematically within the supersymmetry scheme including many-body interactions and possessing the SO(5)(or SU(5))symmetry on the rotational *** good results of the energy spectra,the energy staggering parameter as a function of the spin and the spin assignment are *** calculation shows that the stronger competition between the pairing and anti-pairing effects exists in these chiral doublet bands and the SU(3)symmetry breaking more seriously exists in the stable chiral structure.

关键词： structure symmetry chiral