Article
Physics, Multidisciplinary
JinYi Jiang, YanYan Lu, Chao Wang, Remy Mosseri, JianXin Zhong
Summary: This article analytically shows that quantum diffusion in a coupled system of two identical chains exhibits periodic oscillation in both transverse and longitudinal directions. The frequency of oscillation is determined by the interchain hopping strength and is independent of the periodicity of the chains. Numerical work on various chain systems confirms this result. The article also explores the behavior of quantum diffusion in coupled chains with different degrees of disorder and different types of chains.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Chemistry, Multidisciplinary
Vyacheslav Gorshkov, Vladimir Tereshchuk, Pooya Sareh
Summary: The study analyzed the physical mechanisms of nanocluster formation on nanowires, showing that long-range correlation between clusters is due to surface diffusion and shadow effects. Experimental findings on one-dimensional systems' self-ordering effects were presented, proposing optimal synthesis modes for increasing regularity in nanocluster localization.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Lingxiao Wang, Jing Wang, Xiaoping Gao, Cai Chen, Sicong Wang, Jia Yang, Zhiyuan Wang, Jia Song, Tao Yao, Wu Zhou, Huang Zhou, Yuen Wu, Yunli Da
Summary: We discovered that surface shrinkage induces molecular self-assembly and arranges single atoms into one-dimensional arrays, resulting in improved catalytic performance through optimized adsorption energy.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
H. Cruz
Summary: In this work, a one-dimensional tight-binding model was developed to study conductivity in solid-state superlattices. The localization properties of a tight-binding equation with quasiperiodic and periodic functions were investigated. Metal-insulator transitions were compared between a periodic potential with an external electric field and an Aubry-Andre potential, which is the only known case of a 1D model with a mobility edge. For the case of a periodic potential, a similar mobility edge was found if the applied electric field is small enough, allowing extended and localized states in the superlattice to be controlled by an external source.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Sheng Hu, Shuai-ke Li, Yong Zhao
Summary: In this paper, a curvature sensor based on 2-core fiber offset structure is proposed. It has been experimentally proven that the sensor has good curvature sensing performance, the ability to identify one-dimensional bending direction, and is insensitive to strain and twist. This sensor has a wide range of applications.
Review
Materials Science, Multidisciplinary
M. Samykano
Summary: One-dimensional nanostructures like nanowires, nanotubes have gained significant interest in scientific research due to their potential applications in energy, medical fields, etc. Studies covering synthesis methods, physical properties, mechanical behavior aim at enhancing the performance of nanostructures.
MATERIALS CHARACTERIZATION
(2021)
Article
Mechanics
Ming Long, Jalil Hasanyan, Sunghwan Jung
Summary: This study examines the spreading dynamics of raindrops on curved surfaces, finding that drops on curved surfaces spread farther than on flat surfaces. A new analytical model is developed based on volume conservation and temporal energy balance, showing good agreement with experimental results.
Article
Thermodynamics
Vincent Picandet, Noel Challamel
Summary: This paper studies heat conduction in micro-structured rods using one-dimensional thermal lattices to explore scale effects in conduction and diffusion problems. The nonlocal heat equation is shown to efficiently capture scale effect phenomena in periodic thermal lattices.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Manufacturing
Shota Kawabata, Shi Bai, Kotaro Obata, Godai Miyaji, Koji Sugioka
Summary: This study explores the ability of GHz burst mode femtosecond laser pulses to create two-dimensional laser-induced periodic surface structures (LIPSS) on silicon. The formation mechanism of these structures is attributed to the synergistic contribution of the electromagnetic mechanism and the hydrodynamic mechanism, including the generation of hot spots and convection flow.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Article
Mathematics, Interdisciplinary Applications
Issam Naghmouchi, Houssem Eddine Rezgui
Summary: This paper investigates the dynamics of a local dendrite with a continuous map. It is proven that when the continuous map has no periodic points, the canonical graph contains only one minimal subset, which is circumferential. The rigidity of the dynamics is also shown when the set of endpoints of the local dendrite is closed and countable. However, if the closedness or countability condition is relaxed, various types of chaos may appear, indicating the richness of the dynamics compared to a graph map without periodic points.
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
(2023)
Article
Engineering, Multidisciplinary
P. C. Harisankar, Tapas Sil
Summary: This study investigates the formation, properties, evaporation processes, and equilibration of a bare droplet of a liquid obeying the van der Waals equation of state (vEoS) using Smoothed particle hydrodynamics (SPH). The effect of an impenetrable wall boundary condition and the existing vapor on the droplet's properties are also studied. The results show that the evaporation process and equilibration follow similar curves to that of a bare drop with the same total number of particles.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Chemistry, Physical
Carolyn G. Farling, Mary C. Stackaruk, Cory C. Pye, Christa L. Brosseau
Summary: This study presents physical vapor deposition (PVD) as an efficient alternative method for producing SERS-active SPEs, which show consistent and strong EC-SERS enhancement for the detection of molecules. The coated silver thin films via PVD exhibit reliable enhancement of molecules and promise diverse analytical applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Qing Tong, Shubo Wang
Summary: Researchers applied the phenomenon of helical dichroism to acoustics and found that a lattice of chiral resonators can induce differential absorption of acoustic vortices. Breaking the rotation symmetry leads to coupling between resonators, resulting in OAM band gaps and non-Hermitian exceptional points that significantly enhance helical dichroism. This discovery has important applications in acoustic OAM manipulations and chiral sound-matter interactions.
Article
Materials Science, Multidisciplinary
Junbo Chen, Jianhua Zeng
Summary: Quantum droplets are a novel liquid state of matter formed in a mixture of two-component ultracold Bose gases under equilibrium conditions between competing attractive and repulsive forces. By introducing nonlinear management via space-periodic Feshbach resonance technique, the structure, properties, and dynamics of one-dimensional quantum droplets in a binary Bose-Einstein condensate are theoretically investigated. Small droplets with a single hump, moderate droplets composed of two solitons, and large droplets with a modulated flat-top shape are observed, showing a wider stable region compared to their counterparts without nonlinear management. The results presented may be realized in ultracold atoms experiments with Feshbach resonance, providing a new approach to studying quantum droplets.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Chemical
Lubo Tang, Shaohe Zhang, Xinxin Zhang, Jianming Peng, Usman Shabir
Summary: This study used the CFD method to investigate the erosion behavior of FOs oscillators under periodic oscillating jets, observing erosion mainly near the nozzle, splitter, and vents. The effects of flow rate, particle size, and solid content were evaluated, showing that erosion in the splitter and vents fluctuated cyclically.
Article
Chemistry, Applied
Jia-Xiong Chen, Hui Wang, Lu Zhou, Kai Wang, Jia Yu, Xiao-Hong Zhang
Summary: By connecting a phenoxazine donor (D) into different positions of the 11,12-diphenyldipyrido[3,2-a:2 ',3 '- c]phenazine acceptor (A), two novel red thermally activated delayed fluorescence (TADF) isomers, PPZBP and BPZPP, were designed and synthesized. The different connection modes result in tunable conjugation and change of the locally excited triplet (3LE) state. The PPZBP-based red organic light-emitting diode shows higher efficiency than the BPZPP-based one, demonstrating the importance of controlling D-A conjugations on the 3LE states and providing insights into preferred design strategies for high-efficiency red TADF emitters.
Article
Chemistry, Physical
Song Xue, Jian Shang, Xiuhao Pu, Hao Cheng, Luojiang Zhang, Chenchen Wang, Chun-Sing Lee, Yongbing Tang
Summary: In this study, a dual anionic (N and Se) doping strategy was used to prepare Co9S8 (N,Se-Co9S8) as an anode material for sodium-ion batteries. The N doping increased the electron density of Co9S8, while the Se doping expanded the lattice spacing and lowered the Co-S binding energy. The synergistic combination of N and Se enabled Co9S8 to exhibit high conductivity, good Na+ affinity, and effective Na+ diffusion, resulting in fast reaction kinetics and stable performance during charging/discharging.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Tianxing Kang, Chenchen Wang, Xiaoyang Zhao, Zhiqiang Guan, Dong Shen, Tianyi Song, Yan Wu, Fan Zhang, Yongbing Tang, Zhongqiu Tong, Chun-Sing Lee
Summary: The research team has developed an electrochemically inert and catalytic sp2c-COF separator to stabilize Li plating/stripping and accommodate high mass loadings of cathode in future high energy-density rechargeable batteries with Li metal anodes (LMAs). The nano-pores of sp2c-COF enable homogeneous Li+ flux and its electrochemical inertness prevents side reactions. The cyano-groups on sp2c-COF are critical for generating an inorganic-rich solid electrolyte interphase. Li symmetrical cells demonstrate excellent Li plating/stripping behaviors, and full batteries assembled with LiCoO2 and LiNi0.8Co0.1Mn0.1O2 cathodes show impressive areal capacities. This work provides an important strategy for the stabilization of LMA in rechargeable batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xin Xiong, Ying-Chun Cheng, Kai Wang, Jia Yu, Xiao-Hong Zhang
Summary: Two similar multi-resonance (MR) thermally activated delayed fluorescence (TADF) analogs integrating oxygen and sulfur elements were compared to investigate the influences of introducing elements of different periods. While both compounds exhibited similar photophysical profiles, they showed distinct differences in detailed characteristics. BNCzPTZ with sulfur showed accelerated reverse intersystem crossing due to the heavy atom effect, while BNCzPXZ with oxygen better maintained narrowband emission compared to BNCzPTZ. This work enlightens the development of MR-TADF emitters and OLEDs with superior efficiency, low roll-off, and narrowband emission.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Wei Liu, Cheng Zhang, Riccardo Alessandri, Benjamin T. Diroll, Yang Li, Heyi Liang, Xiaochun Fan, Kai Wang, Himchan Cho, Youdi Liu, Yahao Dai, Qi Su, Nan Li, Songsong Li, Shinya Wai, Qiang Li, Shiyang Shao, Lixiang Wang, Jie Xu, Xiaohong Zhang, Dmitri V. Talapin, Juan J. de Pablo, Sihong Wang
Summary: We have synthesized stretchable electroluminescent polymers that can achieve near-unity theoretical quantum yield through thermally activated delayed fluorescence. Our polymers display 125% stretchability and 10% external quantum efficiency, and demonstrate a fully stretchable organic light-emitting diode. Stretchable light-emitting materials are crucial for the development of skin-like displays and optical biostimulation applications.
Article
Chemistry, Multidisciplinary
Shuai Jiang, Tongyao Xiao, Cui Xu, Suwen Wang, Hui-Qing Peng, Wenjun Zhang, Bin Liu, Yu-Fei Song
Summary: An engineered heterostructure comprising NiFe-LDH and in situ formed NiFe-HAB coordination polymer has been demonstrated to effectively inhibit the OER activity and promote the MOR activity. The heterostructure exhibits outstanding electrocatalytic capability for methanol oxidation, leading to efficient MOR.
Article
Chemistry, Multidisciplinary
Kun Ni, Bentian Xu, Zhiqi Wang, Qinyi Ren, Wenbo Gu, Baoquan Sun, Ruiyuan Liu, Xiaohong Zhang
Summary: Water-droplet-based hydrovoltaic electricity generators utilize the strong interactions between water and nanomaterials to generate energy from water circulation. By employing an asymmetric structure composed of negatively and positively charged materials, this device achieves high current densities and improved charge accumulation. The streaming potential in this generator is proven to originate from capillary infiltration and ion rectification. The proposed method of constructing ion-diode-like structures provides a new strategy for improving generator performance.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Ka-Wai Lee, Yingpeng Wan, Zhongming Huang, Qi Zhao, Shengliang Li, Chun-Sing Lee
Summary: This review summarizes the recent development of organic optoelectronic materials (OOMs) for biomedical applications, specifically in fluorescence imaging, photoacoustic imaging, photothermal therapy, and photodynamic therapy. The relationships between the molecular structures, nanoaggregation structures, photophysical mechanisms, and properties of OOMs for different biomedical applications are discussed. The review also highlights the challenges and future perspectives of OOMs for efficient biomedical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jinwen Wang, Zheng Ren, Jing Pan, Xiaofeng Wu, Jiansheng Jie, Xiaohong Zhang, Xiujuan Zhang
Summary: For the first time, a method of anchored crystal-seed epitaxial growth is developed for wafer-scale growth of 2D organic semiconductor single crystals. The crystal seed is firmly anchored on the liquid surface, ensuring steady epitaxial growth. This approach effectively eliminates substrate defects and enhances the 2D growth of organic crystals, providing a new avenue for high-performance organic electronics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ping Man, Shan Jiang, Ka Ho Leung, Ka Hei Lai, Zhiqiang Guang, Honglin Chen, Lingli Huang, Tianren Chen, Shan Gao, Yung-Kang Peng, Chun-Sing Lee, Qingming Deng, Jiong Zhao, Thuc Hue Ly
Summary: A novel salt-assisted chemical vapor deposition (CVD) method was used to synthesize ultrahigh-density vacancy-rich MoS2 with controllable sulfur vacancy density. The vacancy-rich MoS2 showed exceptional catalytic activity, with an overpotential of 158.8 mV (100 mA cm(-2)) and a Tafel slope of 54.3 mV dec(-1) in 0.5 m H2SO4 electrolyte. This approach represents a significant leap toward achieving better control over the catalytic performances of 2D materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fangyuan Kang, Xin Wang, Cailing Chen, Chun-Sing Lee, Yu Han, Qichun Zhang
Summary: Developing diverse synthetic routes to prepare various crystalline covalent organic frameworks (COFs) and enriching the COFs family is crucial. In this research, the Kro''hnke oxidation method was used to construct two crystalline nitrone-linked COFs (CityU-1 and CityU-2) through the ingenious design of precursors and careful control of polymerization conditions. The as-obtained crystalline COFs were characterized and showed potential applications, such as high specific surface area and I-2 capture capacity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Shuang Tian, Sean J. D. Lugger, Chun-Sing Lee, Michael G. Debije, Albert P. H. J. Schenning
Summary: Charge transfer complexes (CTCs) based on self-assembled donor and acceptor molecules enable absorption of red-shifted wavelengths. In this work, a CTC embedded in a hydrogen-bonded liquid crystal elastomer (LCE) is demonstrated, which can be reformed and reprocessed. The CTC, acting as a near-infrared (NIR) dye, allows photothermal actuation of the LCE when hydrogen bonding is present. Disrupting the hydrogen bond interactions can selectively heat and actuate specific regions of the LCE film by disassembling the CTC, and the non-CTC state can persist or be recovered by heat treatment. The ability to reform the shape, color, and actuation mode of the LCE, in addition to CTC variability, provides unprecedented application versatility.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zhenjie Liu, Pingping Chang, Murong Xi, Juan Ding, Xingchao Wang, Jiulin Wang, Wenjun Zhang, Yudai Huang
Summary: Designing efficient catalysts is crucial for the development of electrochemical synthesis technologies. In this study, a novel vacuum induction strategy is used to synthesize a nickel boride/nickel (Ni3B/Ni) heterostructure catalyst for the electrochemical oxidation of methanol. The catalyst exhibits high reactivity, ultra-high selectivity, and ultra-long life. Mechanistic studies suggest that the formation of *CH2O occurs most favorably in the Ni3B/Ni heterostructure.
Article
Chemistry, Multidisciplinary
Yi-Zhong Shi, Ya-Fang Xiao, Hao Wu, Shao-Li Zhang, Xiao-Chun Fan, Ye Tian, Chang-Qing Ye, Kai Wang, Jia Yu, Chun-Sing Lee, Xiao-Hong Zhang
Summary: In this study, a novel single-molecule emitter with dual-thermally activated delayed fluorescence (TADF) properties was presented. By introducing a pyridine bridge, the steric hindrance was greatly reduced, allowing the molecule to have dual-stable conformations in the ground state. Both the quasi-axial (QA) and quasi-equatorial (QE) forms of the emitter showed distinct TADF characteristics, which is attributed to an additional higher reverse intersystem crossing pathway. This is the first time that dual-TADF properties have been achieved based on conformational isomerism. The potential applications in self-doping organic light-emitting diodes and biomedical imaging were also explored.
Article
Chemistry, Physical
Qingcui Liu, Qiaohong Su, Wenhua Cheng, Juan Ding, Wenjun Zhang, Jiulin Wang, Yonggang Wang, Xingchao Wang, Yudai Huang
Summary: In this study, Fe-Mo2C@CN was successfully synthesized by introducing Fe into the Mo-based catalyst, which suppressed the dissolution of Mo and improved the electrocatalytic performance for the oxygen evolution reaction (OER). Experimental and theoretical results revealed the role of Fe and the importance of lattice oxygen in the OER process, providing a theoretical basis for the application of Mo-based catalysts in water splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
