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| 1 | INVESTIGATION OF BUOYANT TRAJECTORY OF THERMAL WAKE BEHIND A SLENDER STREAMLINED HEATED BODY OF REVOLUTION IN STRATIFIED FLUID显示文摘In this paper, the buoyant trajectories of laminar far thermal wakes behind slenderstreamlined heated bodies of revolution in stable stratified fluid have been investigated in theoryand experiment. It has been found that the buoyant trajectories of thermal wakes in stratifiedfluid are different from that in homogeneous fluid. The buoyant trajectories of thermal wakes instratified fluid are wavy. The factors influencing the buoyant trajectories of axisymmetric lami-nar thermal wakes in stratified fluid are Richardson number, Nusselt number and number.The validity of theoretical analysis has been proved by the results of measurements and visualiza-tions. The buoyant trajectories of thermal wakes after underwater bodies can be estimated by re-sults herein presented. | Yang, Li Hua, Shunfang Du, Xianzhi | 1992 | Journal of Hydrodynamics1992，4，2： | 4 |
| 2 | Plasmon-mediated photodecomposition of NH3 via intramolecular charge transfer显示文摘As an excellent clean medium for hydrogen storage and fuel cell applications,the photolysis of ammonia via localized surface plasmon could be invoked as a promising route towards significantly reducing the temperature for conventional thermolysis.Here,we explore the underlying microscopic mechanism of ultrafast carrier dynamics in plasmon-mediated NH3 photodecomposition at the single-molecular level using real-time time-dependent density functional theory.The NH_(3)molecule adsorbed on the tip of archetypal magic metal clusters represented by tetrahedral Ag_(2)0 and icosahedral Ag147,splits within a hundred femtoseconds upon laser pulse illumination.We found that the splitting of the first N-H bond is dominated by the intramolecular charge transfer driven by localized surface plasmon.Surprisingly,the phase of laser pulse could modulate the dynamics of charge transfer and thus affect the plasmon-induced bond breaking.These findings offer a new avenue for NH3 decomposition and provide in-depth insights in designing highly efficient plasmon-mediated photocatalysts. | Yimin Zhang Weite Meng Daqiang Chen Lili Zhang Shunfang Li Sheng Meng | 2022 | Nano Research2022，15，5： | 2 |
| 3 | Establishment of an experimental human lung adenocarcinoma cell line SPC-A-1BM with high bone metastases potency by 99m Tc-MDP bone scintigraphy显示文摘 | Shunfang Yang Qianggang Dong Ming Yao Meiping Shi Jianding Ye Langxiang Zhao Jianzhong Su Weiyong Gu Wenhui Xie Kankan Wang Yanzhi Du Yao Li Yan Huang | 2009 | Nuclear Medicine and Biology2009，，3： | 1 |
| 4 | Charge-induced structural changes in Al12C clusters显示文摘 | Li Shunfang Gong Xingao | 2004 | Phys Rev B2004，70，07： | 1 |
| 5 | Negative differential friction coefficients of two-dimensional commensurate contacts dominated by electronic phase transition显示文摘Friction force(f)usually increases with the normal load(N)macroscopically,according to the classic law of Da Vinci–Amontons(f=μN),with a positive and finite friction coefficient(μ).Herein near-zero and negative differential friction(ZNDF)coefficients are discovered in two-dimensional(2D)van der Waals(vdW)magnetic CrI_(3)commensurate contacts.It is identified that the ferromagnetic–antiferromagnetic phase transition of the interlayer couplings of the bilayer CrI_(3)can significantly reduce the interfacial sliding energy barriers and thus contribute to ZNDF.Moreover,phase transition between the in-plane(p_(x)and p_(y))and out-of-plane(p_(z))wave-functions dominates the sliding barrier evolutions,which is attributed to the delicate interplays among the interlayer vdW,electrostatic interactions,and the intralayer deformation of the CrI_(3)layers under external load.The present findings may motivate a new concept of slide-spintronics and are expected to play an instrumental role in design of novel magnetic solid lubricants applied in various spintronic nano-devices. | Kun Liu Jiangtao Cheng Xingju Zhao Yandi Zhu Xiaoyan Ren Jinlei Shi Zhengxiao Guo Chongxin Shan Hongjie Liu Shunfang Li | 2022 | Nano Research2022，15，6： | 0 |
| 6 | Revealing the atomic mechanism of diamond–iron interfacial reaction显示文摘Diamond,with ultrahigh hardness,high wear resistance,high thermal conductivity,and so forth,has attracted worldwide attention.However,researchers found emergent reactions at the interfaces between diamond and ferrous materials,which significantly affects the performance of diamond-based devices.Herein,combing experiments and theoretical calculations,taking diamond–iron(Fe)interface as a prototype,the counter-diffusion mechanism of Fe/carbon atoms has been established.Surprisingly,it is identified that Fe and diamond first form a coherent interface,and then Fe atoms diffuse into diamond and prefer the carbon vacancies sites.Meanwhile,the relaxed carbon atoms diffuse into the Fe lattice,forming Fe_(3)C.Moreover,graphite is observed at the Fe_(3)C surface when Fe_(3)C is over-saturated by carbon atoms.The present findings are expected to offer new insights into the atomic mechanism for diamondferrous material's interfacial reactions,benefiting diamond-based device applications. | Yalun Ku Kun Xu Longbin Yan Kuikui Zhang Dongsheng Song Xing Li Shunfang Li Shaobo Cheng Chongxin Shan | 2024 | Carbon Energy2024，6，3： | 0 |
| 7 | Modulating reaction pathways of formic acid oxidation for optimized electrocatalytic performance of PtAu/CoNC显示文摘Formic acid oxidation(FAO)is a typical anode reaction in fuel cells that can be facilitated by modulating its direct and indirect reaction pathways.Herein,PtAu bimetallic nanoparticles loaded onto Co and N co-doping carbon nanoframes(CoNC NFs)were designed to improve the selectivity of the direct reaction pathway for efficient FAO.Based on these subtle nanomaterials,the influences of elemental composition and carbon-support materials on the two pathways of FAO were investigated in detail.The results of fuel cell tests verified that the appropriate amount of Au in PtAu/CoNC can promote a direct reaction pathway for FAO,which is crucial for enhancing the oxidation efficiency of formic acid.In particular,the obtained PtAu/CoNC with an optimal Pt/Au atomic ratio of 1:1(PtAu/CoNC-3)manifests the best catalytic performance among the analogous obtained Pt-based electrocatalysts.The FAO mass activity of the PtAu/CoNC-3 sample reached 0.88 A·mg_(Pt)^(-1),which is 26.0 times higher than that of Pt/C.The results of first-principles calculation and CO stripping jointly demonstrate that the CO adsorption of PtAu/CoNC is considerably lower than that of Pt/CoNC and PtAu/C,which indicates that the synergistic effect of Pt,Au,and CoNC NFs is critical for the resistance of Pt to CO poisoning.This work is of great significance for a deeper understanding of the oxidation mechanism of formic acid and provides a feasible and promising strategy for enhancing the catalytic performance of the catalyst by improving the direct reaction pathway for FAO. | Mengchao Liang Tianyu Xia Han Gao Kai Zhao Tianqi Cao Meng Deng Xiaoyan Ren Shunfang Li Haizhong Guo Rongming Wang | 2022 | Nano Research2022，15，2： | 0 |
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