Article
Physics, Nuclear
Chinmay Mishra, A. Ekstrom, G. Hagen, T. Papenbrock, L. Platter
Summary: This study investigates the effects of different potentials on nucleon-nucleon interactions, revealing a surprisingly low breakdown momentum and demonstrating how accuracy and renormalization group invariance of phase shifts can be improved by adding contact terms.
Article
Astronomy & Astrophysics
Qi Meng, Emiko Hiyama, Makoto Oka, Atsushi Hosaka, Chang Xu
Summary: The spectrum of doubly heavy tetraquarks is studied in a quark model, showing that the compact bound states are shifted up due to the repulsive central force between quarks and antiquarks. This effect may explain the small binding energy in Tcc. Additionally, a resonant state is reported.
Article
Chemistry, Physical
Biyun Ren, Bing Chen, Jianxiong Zhao, Yang Guo, Xin Zhang, Xian Chen, Yangyang Du, Zhiqin Deng, Guangyu Zhu, Feng Wang
Summary: Lanthanide-doped ScF3 nanoparticles were synthesized and studied for their thermal enhancement of upconversion, showing a significant increase in emission within a certain temperature range and high temperature sensitivity. The development of new methods may inspire the creation of thermally enhanced upconversion nanoparticles with high emission intensities.
CHEMISTRY OF MATERIALS
(2021)
Article
Astronomy & Astrophysics
S. Mikhailov, A. Pimikov, N. G. Stefanis
Summary: The study demonstrates the use of renormalization-group summation to generate QCD radiative corrections to the pi - gamma transition form factor, ensuring the strong coupling is free of Landau singularities while preserving the QCD form-factor asymptotics. By fitting all available data below 3.1 GeV^2, the researchers were able to determine nonperturbative scale parameters and Gegenbauer coefficients, resulting in a pion distribution amplitude that agrees with the data for Q^2 <= 3.1 GeV^2 and satisfies lattice constraints. The form-factor prediction based on this method significantly outperforms predictions based on fixed-order power-series expansions in the strong coupling constant below 1 GeV^2.
Article
Physics, Applied
Sibin Duan, Yuepeng Lv, Peng Yin, Yuchen Zhu, Rongming Wang
Summary: A series of transition metal sulphide-based nanostructures have been designed, among which the Au-CoNi2S4 core-shell nanoparticles demonstrate superior electrocatalytic properties for oxygen evolution.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Yichen Guo, Zhangqian Liang, Yanjun Xue, Xinyu Wang, Xiaoli Zhang, Jian Tian
Summary: In this study, rod-shell nanostructures (CdS/Cu2S) were constructed by growing Cu2S as the outer shell on CdS nanorods, resulting in significantly enhanced hydrogen production activity. The improved photocatalytic performance of CdS/Cu2S rod-shell nanostructures is attributed to the structural design facilitating electron transfer and the broadened light absorption range achieved by Cu2S outer shells. This work provides insight into the design of rod-shell structured photocatalysts for efficient solar energy conversion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Plant Sciences
Zoe Postel, Theo Mauri, Marc F. Lensink, Pascal Touzet
Summary: A recent study suggests that mutations in plastid and nuclear genes in the species Silene nutans may disrupt plastid-nuclear protein interactions and lead to reproductive isolation. The findings highlight the relationship between adaptation strategies and species evolution.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Chemistry, Physical
Zhaolong Wang, Hanxiang Chen, Jian Bao, Yanhua Song, Xiaojie She, Guoai Lv, Jiujun Deng, Huaming Li, Hui Xu
Summary: The development of a bifunctional electrode material with amorphous NiFeMo films grown on a conductive nickel foam substrate has significantly improved the overall water splitting performance, allowing for efficient hydrogen production to alleviate carbon emissions.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Junlin Cai, Xinyan Liao, Pingting Li, Qiuxiang Wang, Hongpu Huang, Zixi Lyu, Jing Lin, Shuifen Xie
Summary: By precisely controlling the supply of Pt precursor solution via a micro-syringe pump, penta-twinned Rh@Pt-x core-shell nanobranches with intense surface strains were facilely synthesized, exhibiting superior hydrogen redox electrocatalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Anzy Lee, Antoine F. Aubeneau, M. Bayani Cardenas, Xiaofeng Liu
Summary: The study investigates the impact of cobble clusters embedded in a sand bed on water flow and exchange. Results show that the spacing and embeddedness of cobbles affect hyporheic exchange, with increased exchange and longer travel time when cobbles protrude more into the channel.
WATER RESOURCES RESEARCH
(2022)
Article
Chemistry, Physical
Xiaolin Li, Chi Zhang, Min Qing, Da Chen, Xiao Hu Wang, Rui Li, Bang Lin Li, Hong Qun Luo, Nian Bing Li, Wen Liu
Summary: The optimum electrocatalysts for energy conversion and storage are essential for cost-effective and environmentally friendly technologies. This study investigates two types of core-shell electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in acid and alkali electrolytes. The cobalt@cobalt phosphide nanoparticles catalyst (Co@CoP/CNT) grown on carbon nanotubes demonstrates high activity for HER, while the in situ formed cobalt@cobalt oxide (Co@Co3O4/CNT) catalyst shows decreased performance due to the metal-metal oxide interaction. DFT simulation reveals the underlying mechanisms of the core-shell catalysts' activity and selectivity, shedding new light on catalyst material design for intermediate-selective electrocatalytic reactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Mechanical
Chengyan Wang, Tong Wang, Yankang Zhang, Lin Li, Yaxing Yin, Dapeng Tan
Summary: This study focuses on the dynamic behavior of the ring-stiffened double-shell structure under subsea impact. A modeling and solving method based on the ALE-FSI theory is proposed to simulate the collision process. The results show that the structural damage is primarily contained in the collision area, and the non-pressure shell provides better protection.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Jiayi Chen, Xu Li, Bo Ma, Xudong Zhao, Yantao Chen
Summary: A novel core-shell heterostructure of Cu3P@Ni was fabricated, showing durable and superior activity towards hydrogen evolution, with altered electronic structure for accelerated charge transfer and increased intrinsic activity. This work could provide insights for the development of novel electrocatalysts with modulated electronic structure for highly efficient hydrogen evolution.
Article
Physics, Nuclear
Adrian Sanchez-Fernandez, Benjamin Bally, Tomas R. Rodriguez
Summary: The study focuses on the ability of variational approaches to reproduce exact energies and electromagnetic properties of nuclei in the sd-shell valence space using the nontrivial USD Hamiltonian. Different methods are compared and the roles of proton-neutron mixing, quadrupole, and pairing degrees of freedom are analyzed in describing the spectra of nuclei in the sd shell.
Article
Chemistry, Physical
Peng Su, Hai Liu, Zhiliang Jin
Summary: This work presents the preparation of Co3O4/NiCo2O4 hollow double-shell polyhedrons as a catalyst for photocatalytic hydrogen production. The unique catalyst shows self-supporting structure, high light-trapping ability, and effective separation and migration of carriers, leading to increased hydrogen evolution rate.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Atomic, Molecular & Chemical
Kaiyuan Zhang, Myung-Ki Cheoun, Yong-Beom Choi, Pooi Seong Chong, Jianmin Dong, Zihao Dong, Xiaokai Du, Lisheng Geng, Eunja Ha, Xiao-Tao He, Chan Heo, Meng Chit Ho, Eun Jin In, Seonghyun Kim, Youngman Kim, Chang-Hwan Lee, Jenny Lee, Hexuan Li, Zhipan Li, Tianpeng Luo, Jie Meng, Myeong-Hwan Mun, Zhongming Niu, Cong Pan, Panagiota Papakonstantinou, Xinle Shang, Caiwan Shen, Guofang Shen, Wei Sun, Xiang-Xiang Sun, Chi Kin Tam, Chi Kin Tam, Chen Wang, Xingzhi Wang, Sau Hei Wong, Jiawei Wu, Xinhui Wu, Xuewei Xia, Yijun Yan, Ryan Wai-Yen Yeung, To Chung Yiu, Shuangquan Zhang, Wei Zhang, Xiaoyan Zhang, Qiang Zhao, Shan-Gui Zhou
Summary: The ground-state properties of even-even nuclei with 8 <= Z <= 120 from the proton drip line to the neutron drip line have been investigated using the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc). The study predicts that 2583 even-even nuclei are bound when the effects of deformation and continuum are included simultaneously. The calculated properties are compared with available experimental data, and the results show good agreement.
ATOMIC DATA AND NUCLEAR DATA TABLES
(2022)
Article
Physics, Multidisciplinary
Jun-Xu Lu, Chun-Xuan Wang, Yang Xiao, Li-Sheng Geng, Jie Meng, Peter Ring
Summary: We propose a theoretical framework for a relativistic chiral nucleon-nucleon interaction and demonstrate its good performance in describing phase shifts up to Tlab = 200MeV. This theory has significant applications in studying nuclear structure and reactions.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Z. X. Ren, D. Vretenar, T. Niksic, P. W. Zhao, J. Zhao, J. Meng
Summary: This study examines the process of nuclear fission, focusing on the formation and scission mechanism of a neck between the nascent fragments. By using time-dependent density functional theory, it is found that the assembly of two α-like clusters coincides with the formation of the neck. During scission, the neck ruptures between the two α-like clusters, and light charged clusters are formed. The findings provide insights into the mechanism of nuclear fission and its potential connection to ternary fission.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
L. Mu, S. Y. Wang, C. Liu, B. Qi, R. A. Bark, J. Meng, S. Q. Zhang, P. Jones, S. M. Wyngaardt, H. Jia, Q. B. Chen, Z. Q. Li, S. Wang, D. P. Sun, R. J. Guo, X. C. Han, W. Z. Xu, X. Xiao, P. Y. Zhu, H. W. Li, H. Hua, X. Q. Li, C. G. Li, R. Han, B. H. Sun, L. H. Zhu, T. D. Bucher, B. Kheswa, N. Khumalo, E. A. Lawrie, J. J. Lawrie, K. L. Malatji, L. Msebi, J. Ndayishimye, J. F. Sharpey-Schafer, O. Shirinda, M. Wiedeking, T. Dinoko, S. S. Ntshangase
Summary: Two nearly degenerate positive-parity bands and three nearly degenerate negative-parity bands have been identified in Kr-81, which are interpreted as chiral doublet bands and pseudospin-chiral triplet bands.
Article
Physics, Nuclear
Jing Geng, Yi Fei Niu, Wen Hui Long
Summary: Using the axially deformed relativistic Hartree-Fock-Bogoliubov (D-RHFB) model, the mechanism behind the parity inversion and halo occurrence in Be-11 is explored, which are well reproduced by the RHF Lagrangian PKA1. It is demonstrated that the enhanced deformation effects by the pi-pseudo-vector and rho-tensor couplings in PKA1 are crucial for accurately describing both the even-parity ground state (GS) and the neutron halo of Be-11. Coupling with the deformation, the intrude 11Be. Moreover, the deformed halo in Be-11 is found to be stabilized by the attractive inherent correlations between the nucleons.
Article
Astronomy & Astrophysics
Y. P. Wang, J. Meng
Summary: This study focuses on the microscopic understanding of the influence of pairing correlations or superfluidity on nuclear chiral rotation. By implementing a shell-model-like approach with exact particle number conservation based on the three-dimensional cranking covariant density functional theory, the pairing correlations are taken into account and applied to the chiral doublet bands in 135Nd. The results successfully reproduce the available data, including the I -omega relation and electromagnetic transition probabilities B(M1) and B(E2). It is found that superfluidity can reduce the critical frequency and facilitate chiral rotation by reducing particle/hole alignments along specific axes.
Article
Physics, Nuclear
J. Lin, Y. K. Wang, C. Xu, Z. H. Li, H. Hua, S. Q. Zhang, D. W. Luo, H. Y. Wu, J. Meng, X. G. Wu, Y. Zheng, C. B. Li, T. X. Li, Z. Y. Huang, H. Cheng, C. Y. Guo, Z. X. Zhou, Z. Q. Chen, C. G. Wang
Summary: The high-spin spectroscopy of Ni-61 has been investigated through the fusion-evaporation reaction Cr-54(B-11, 4n)Ni-61 at a beam energy of 54 MeV. One dipole band and one quadrupole band in Ni-61 have been identified for the first time, and they are considered as potential candidates for magnetic and antimagnetic rotational bands based on comparisons with Cd-110 and particle-plus-rotor model calculations. Microscopic tilted axis cranking covariant density functional theory has been used to further study these new bands, and good agreement between experiment and calculation has been achieved. The dipole band is characterized by the shears mechanism, while the quadrupole band is characterized by the two-shears-like mechanism. This study provides evidence for the possible coexistence of magnetic and antimagnetic rotations in the A approximate to 60 mass region.
Article
Physics, Nuclear
B. Li, D. Vretenar, Z. X. Ren, T. Niksic, J. Zhao, P. W. Zhao, J. Meng
Summary: The saddle-to-scission dynamics of induced fission process is investigated using a microscopic finite temperature model based on time-dependent nuclear density functional theory (TDDFT), which allows the tracking of local temperature evolution along the fission trajectories. By starting from a temperature corresponding to the experimental excitation energy of the compound system, nucleons are propagated along isentropic paths towards scission. The study focuses on the energy partitioning at scission, including dissipated energy along the fission path and the prescission kinetic energy, for four illustrative cases of induced fission. The model is also applied to the dynamics of neck formation and rupture, characterized by the formation of few-nucleon clusters in the low-density region between the nascent fragments.
Article
Physics, Nuclear
Sibo Wang, Hui Tong, Qiang Zhao, Chencan Wang, Peter Ring, Jie Meng
Summary: The study investigates nucleon effective masses in neutron-rich matter using the relativistic Brueckner-Hartree-Fock (RBHF) theory in the full Dirac space. The effective masses of neutrons and protons in symmetric nuclear matter are consistent with empirical values. In neutron-rich matter, the neutron has a larger effective mass compared to the proton, and the predicted neutron-proton effective mass splittings at the empirical saturation density are related to the isospin asymmetry parameter. The study's results align with other ab initio calculations and constraints from nuclear reaction and structure measurements.
Article
Physics, Nuclear
X. Xiao, S. Y. Wang, C. Liu, R. A. Bark, J. Meng, S. Q. Zhang, B. Qi, H. Hua, P. Jones, S. M. Wyngaardt, S. Wang, D. P. Sun, Z. Q. Li, N. B. Zhang, H. Jia, R. J. Guo, X. C. Han, L. Mu, X. Lu, W. Z. Xu, C. Y. Niu, C. G. Wang, E. A. Lawrie, J. J. Lawrie, J. F. Sharpey-Schafer, M. Wiedeking, S. N. T. Majola, T. D. Bucher, T. Dinoko, B. Maqabuka, L. Makhathini, L. Mdletshe, N. A. Khumalo, O. Shirinda, K. Sowazi
Summary: High-spin states in As-74 were studied and two positive-parity and one negative-parity bands were identified. The positive-parity bands are interpreted as chiral doublet bands, and octupole correlations in As-74 were observed.
Article
Physics, Nuclear
Sibo Wang, Hui Tong, Qiang Zhao, Chencan Wang, Peter Ring, Jie Meng
Summary: The controversy surrounding isospin dependence of the effective Dirac mass in ab initio calculations of asymmetric nuclear matter is clarified through solving relativistic Brueckner-Hartree-Fock equations in full Dirac space. The symmetry energy and slope parameter at saturation density are in agreement with empirical values, and further applications predict neutron star radius and maximum mass.
Article
Astronomy & Astrophysics
Yan Lyu, Takumi Doi, Tetsuo Hatsuda, Yoichi Ikeda, Jie Meng, Kenji Sasaki, Takuya Sugiura
Summary: The interaction between the 0-meson and the nucleon in the spin 3/2 channel is found to have a short-range attractive core and a long-range attractive tail, which is consistent with the two-pion exchange interaction between a color-dipole and the nucleon.
Article
Physics, Nuclear
Qiang Zhao, Zhengxue Ren, Pengwei Zhao, Jie Meng
Summary: In this study, a new density-dependent point-coupling covariant density functional PCF-PK1 is proposed and successfully applied to describe the properties of nuclear matter and nuclei. By considering the exchange terms and determining the coupling constants, the method accurately predicts the ground-state properties of nuclear matter and nuclei as well as the Gamow-Teller resonances. Furthermore, PCF-PK1 can eliminate the spurious shell closures commonly observed in covariant density functionals.
Article
Physics, Nuclear
D. D. Zhang, Z. X. Ren, P. W. Zhao, D. Vretenar, T. Niksic, J. Meng
Summary: The effects of rotation and valence nucleons in molecular linear alpha-chain nuclei are analyzed using a three-dimensional lattice cranking model based on covariant density functional theory. The study reveals that with increasing rotational frequency, the valence nucleons transition from the pi molecular orbital to the sigma molecular orbital, thus stabilizing the 3 alpha linear chain structure. The research also shows that the transition frequencies for valence protons and neutrons differ in different nuclei.
Article
Physics, Nuclear
D. W. Luo, C. Xu, Y. K. Wang, Z. H. Li, R. A. Bark, S. Q. Zhang, H. Huo, S. Y. Eang, J. Peng, X. Q. Li, H. Y. Wu, X. Wang, C. G. Wu, Q. T. Li, J. Lin, Y. Jin, W. Z. Xu, L. Mu, J. Meng, F. R. Xu, Y. L. Ye, D. X. Jiang, P. Jones, E. A. Lawrie, P. Papka, M. F. Nkalanga, T. D. Bucher, M. V. Chisapi, L. Msebi, S. Jongile, S. Ntshangase, B. R. Zikhali, S. H. Mthembu, T. Seakamela, M. A. Sithole, O. Shirihda, A. A. Aava, L. Mdletshe, K. L. Malatji, S. Mhlongo, L. Makhathini
Summary: The spectroscopy of 62Cu is investigated in this study, which includes the observation of positive-parity and negative-parity level sequences and the discussion of collective structures.
