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新型炭材料（中英文） 2024年第4期39卷 668-680页

作者： LIU Yue CHANG Sheng-kai SU Zhan-peng HUANG Zu-jian QIN Ji YANG Jian-xiao Hunan Province key {1. for Advanced Carbon Materials and Applied technology College of Materials Science and EngineeringHunan UniversityChangsha410082China

Graphitized carbon foams(GFms)were prepared using mesophase pitch(MP)as a raw material by foaming(450℃),pre-oxidation(320℃),carbonization(1.00℃)and graphitization(2800℃).The differences in structure and properties of GFms prepared from different MP precursors pretreated by ball milling or liquid phase extraction were investigated and compared,and semi-quantitative calculations were conducted on the Raman and FTIR spectra of samples at each preparation ***-quantitat-ive spectroscopic analysis provided detailed information on the structure and chemical composition changes of the MP and GFm de-rived from *** with microscopic observations,the change from precursor to GFm was *** results showed that ball milling concentrated the distribution of aromatic molecules in the pitch,which contributed to uniform foaming to give a GFm with a uniform pore distribution and good *** phase extraction helped remove light components while retaining large aromatics to form graphitic planes with the largest average size during post-treatment to produce a GFm with the highest degree of graphitization and the fewest open pores,giving the best compression resistance(2.47 MPa),the highest thermal conductivity(64.47 W/(m·K))and the lowest electrical resistance(1..02μΩ·m).Characterization combining semi-quantitative spectroscopic ana-lysis with microscopic observations allowed us to control the preparation of the MP-derived GFms.

关键词： Mesophase pitch Carbon foams Raman FTIR Graphitization

A hybrid ZnO nanoparticle electron transporting layer for inverted structure organic solar cells with efficiency over 1.%

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science China Chemistry 2024年

作者： Xin Chen Jian Liu Zheng Xiao Zhaochen Suo Jie Wang Zhaoyang Yao Chenxi Li Xiangjian Wan Yongsheng Chen State key {1. of Elemento-Organic Chemistry Center for New Organic Matter The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Renewable Energy Conversion and Storage Center (RECAST) Tianjin Key Laboratory of Functional Polymer Materials College of Chemistry Nankai University

Electron transport layers（ETLs） play a pivotal role in determining the efficiency and stability of inverted structure organic solar cells（OSCs）. Zinc oxide nanoparticles（ZnO NPs） are commonly used as ETLs due to their mild deposition conditions and compatibility with flexible plastic substrates, facilitating scalable manufacturing. In this study, we introduce a molecule called NMO, which serves a dual purpose: efficiently dispersing ZnO nanoparticles and acting as a surface modification layer for ZnO NPs thin films. The hybrid ETL created by blending and surface modification with NMO significantly enhances both the efficiency and stability of OSCs. Inverted structure OSCs, based on the PM6:Y6 system and utilizing the hybrid ETL, achieve impressive power conversion efficiency（PCE） of 1..31.. Moreover, these devices demonstrate exceptional stability during shelf storage(T80= 1.,650 h), thermal aging(T80= 7783 h), and maximum power point tracking(T80= 3009 h). Importantly, the hybrid ETL exhibits good generality, as all tested OSCs utilizing it display significantly improved efficiencies and ***, a PCE of 1..23% is attained for the PM6:BTP-eC9-based device, marking the highest reported efficiency for inverted single-junction OSCs to date.

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Gold complex showing chiral persistent luminescence

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science China Materials 2024年第2期67卷 707-708页

作者： Tianhong Chen Dongpeng Yan Beijing key {1. of Energy Conversion and Storage Materials and Key Laboratory of RadiopharmaceuticalsMinistry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China

Long-persistent luminescence(LPL)has received significant focus due to its exceptional applications in high-contrast molecular imaging,photodynamic therapy,data encryption and information storage,and among many others... 详细信息

关键词： luminescence showing exceptional

Experimentally Ruling Out Joint Reality Based on Locality with Device-Independent Steering

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Chinese Physics Letters 2024年第1期41卷 1-5页

作者： Shuaining Zhang Xiang Zhang Zhiyue Zheng Wei Zhang Beijing Academy of Quantum information {1.s Beijing 100193China Department of Physics and Beijing key {1. of Opto-electronic Functional Materials and Micro-nano Devices Renmin University of ChinaBeijing 100872China key {1. of Quantum State Construction and Manipulation(Ministry of Education) Renmin University of ChinaBeijing 100872China

As an essential concept to understand the world,whether the real values(or physical realities)of observables are suitable to physical systems beyond the classic has been debated for many *** standard nogo results based on Bell inequalities have ruled out the joint reality of incompatible quantum observables,the possibility of giving simple yet strong arguments to rule out joint reality in any physical system(not necessarily quantum)with weaker assumptions and less observables has been explored and proposed ***,we perform a device-independent experiment on a two-qubit superconducting system to show that the joint reality of two observables is incompatible with locality under the weaker assumption of the reality of observables in a single space-time region(or single qubit).Our results clearly show the violation of certain inequalities derived from both linear and nonlinear *** addition,we study the robustness of the linear and nonlinear criterion against the effect of systematic *** demonstration opens up the possibility of delineating classical and non-classical boundaries with simpler nontrivial quantum system.

关键词： observable quantum system

Swimmer with submerged SiO_(2)/Al/LiNbO_(3) surface acoustic wave propulsion system

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Biomimetic Intelligence & Robotics 2024年第2期4卷 71-77页

作者： Deqing Kong Ryo Tanimura Fang Wang Kailiang Zhang Minoru Kuribayashi Kurosawa Manabu Aoyagi Department of Engineering Muroran Institute of TechnologyMuroran 050-8585Japan Tianjin key {1. of Film Electronic and Communication Devices School of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 300384China School of Engineering Tokyo Institute of TechnologyYokohama 226-8501Japan

Acoustic propulsion system presents a novel underwater propulsion approach in small scale *** study introduces a submerged surface acoustic wave(SAW)propulsion system based on the SiO_(2)/Al/LiNbO_(3) *** 1..25 MHz,the SAW propulsion system is proposed and investigated by the propulsion force calculation,PIV measurements and propulsion measurements.3.3 mN propulsion force is measured at 27.6 V_(pp).To evaluate the miniature swimmer,the SAW propulsion systems with multiple frequencies are *** 2.2 W,the submerged SAW propulsion system at 38.45 MHz demonstrates 0.83 mN/mm^(2) propulsion *** 96.1. MHz and 24 V_(pp),the movements of miniature swimmer with a fully submerged SAW propulsion system are recorded and analyzed to a maximum of 1.7 mm/*** of miniaturization,high power density,and simple structure,the SAW propulsion system can be expected for some microrobot applications,such as underwater drone,pipelinerobotand intravascularrobot.

关键词： Acoustofluidics Surface acoustic wave Swimmer Underwater propulsion system

Enhancing Photocatalytic Hydrogen Evolution through Electronic Structure and Wettability Adjustment of ZnIn2S4/Bi2O3 S-Scheme Heterojunction

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物理化学学报 2024年第8期40卷 50-63页

作者： Linfeng Xiao Wanlu Ren Shishi Shen Mengshan Chen Runhua Liao Yingtang Zhou Xibao Li School of Materials science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403Jiangxi ProvinceChina Zhejiang key {1. of Petrochemical Environmental Pollution Control National Engineering Research Center for Marine AquacultureMarine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316022Zhejiang ProvinceChina School of Materials science and Engineering Nanchang Hangkong UniversityNanchang 330063China

The production of renewable fuels through water splitting via photocatalytic hydrogen production holds significant ***,the sluggish kinetics of hydrogen evolution and the inadequate water adsorption on photocatalysts present notable *** this study,we have devised a straightforward hydrothermal method to synthesize Bi_(2)O_(3)(BO)derived from metal‐organic frameworks(MOFs),loaded with flower-like ZnIn_(2)S_(4)(ZIS).This approach substantially enhances water adsorption and surface catalytic reactions,resulting in a remarkable enhancement of photocatalytic *** employing triethanolamine(TEOA)as a sacrificial agent,the hydrogen evolution rate achieved with 1.%(mass fraction)ZIS loading on BO reached an impressive value of 1.1.μmol∙h^(−1.∙g^(−1.,marking a 6.34-fold increase compared to that observed for bare ***,through density functional theory(DFT)and ab initio molecular dynamics(AIMD)calculations,we have identified the reactions occurring at the ZIS/BO S-scheme heterojunction interface,including the identification of active sites for water adsorption and catalytic *** study provides valuable insights into the development of high-performance composite photocatalytic materials with tailored electronic properties and wettability.

关键词： S-scheme Hydrogen evolution Wettability Photocatalysis Electronic structure

Antibacterial mechanism of kojic acid and tea polyphenols against Escherichia coli O1.7:H7 through transcriptomic analysis

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Food science and Human Wellness 2024年第2期13卷 736-747页

作者： Yilin Lin Ruifei Wang Xiaoqing Li Keren Agyekumwaa Addo Meimei Fang Yehui Zhang Yigang Yu School of Food sciences and Engineering South China University of TechnologyGuangzhou 510640China Sericulture&Agri-food Research Institute Guangdong Academy of Agricultural sciences Key Laboratory of Functional FoodsMinistry of Agriculture and Rural AffairsGuangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China Research Center of Food Safety and Detection College of Food Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Escherichia coli O1.7:H7 is one of the major foodborne pathogenic bacterial that cause infectious diseases in *** previous found that a combination of kojic acid and tea polyphenols exhibited better activity against *** O1.7:H7 than using either *** study aimed to explore responses underlying the antibacterial mechanisms of kojic acid and tea polyphenols from the gene *** functional enrichment analysis by comparing kojic acid and tea polyphenols individually or synergistically against *** O1.7:H7 found that acid resistance systems in kojic acid were activated,and the cell membrane and genomic DNA were destructed in the cells,resulting in“oxygen starvation”.The oxidative stress response triggered by tea polyphenols inhibited both sulfur uptake and the synthesis of ATP,which affected the bacteria's life metabolic ***,we found that kojic acid combined with tea polyphenols hindered the uptake of iron that played an essential role in the synthesis of DNA,respiration,tricarboxylic acid *** results suggested that the iron uptake pathways may represent a novel approach for kojic acid and tea polyphenols synergistically against *** O1.7:H7 and provided a theoretical basis for bacterial pathogen control in the food industry.

关键词： Kojic acid Tea polyphenols Antibacterial mechanism Escherichia coli O1.7:H7 RNA-seq

A New Excess Free Energy Mixing Rule for Representing Vapor-Liquid Equilibria of Mixed Refrigerants

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Journal of Thermal science 2024年第3期33卷 1161-1173页

作者： YE Gongran FANG Yibo YAN Yuhao LIU Ying OUYANG Hongsheng GUO Zhikai HAN Xiaohong key {1. of Refrigeration and Cryogenic technology of Zhejiang Province Institute of Refrigeration and CryogenicsZhejiang UniversityHangzhou310027China State key Lab for Fluorine Greenhouse Gases Replacement and Control Treatment Zhejiang Research Institute of Chemical IndustryHangzhou310014China Zhejiang key {1. of Clean Energy and Carbon Neutrality Zhejiang UniversityHangzhou310027China

A suitable mixing rule is important for vapor liquid equilibrium(VLE)investigations for mixed *** this work,a new excess free energy mixing rule(MRv)was proposed at zero pressure based on the linear relationship between dimensionless parameter 1.(u-1.and *** mixing rule was explicit adopted variable liquid molar *** applicable temperature range of MRv could be extended by means of an empirical method to estimate the liquid molar volume for components at high *** mixing rules modified Huron-Vidal mixing rule(MHV1.,Wong-Sandler mixing rule(WS),and MRv at two reference pressures were used to compare the VLE data in the calculation of 37 mixed *** demonstrated that MRv had a relatively similar accuracy to MHV1.and WS for component and pressure ***,the average excess Gibbs free energy using the MRv mixing rule for the 37 selected mixed refrigerants(0.001.)was much lower than those using the MHV1.0.0078)and WS(0.0809)mixing rules,which was very valuable for the design and optimization of thermodynamic systems using mixed refrigerants.

关键词： mixed refrigerant vapor liquid equilibrium(VLE) mixing rule reproducibility

Observation of accurately designed bound states in the continuum in momentum space

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Photonics Research 2024年第4期12卷 638-647页

作者： JIAJU WU JINGGUANG CHEN XIN QI ZHIWEI GUO JIAJUN WANG FENG WU YONG SUN YUNHUI LI HAITAO JIANG LEI SHI JIAN ZI HONG CHEN MOE key {1. of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China State key {1. of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China School of optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China

Bound states in the continuum(BICs)in artificial photonic structures have received considerable attention since they offer unique methods for the extreme field localization and enhancement of light-matter ***,the symmetry-protected BICs are located at high symmetric points,while the positions of accidental BICs achieved by tuning the parameters will appear at some points in momentum *** to now,to accurately design the position of the accidental BIC in momentum space is still a ***,we theoretically and experimentally demonstrate an accurately designed accidental BIC in a two-coupled-oscillator system consisting of bilayer gratings,where the optical response of each grating can be described by a single resonator *** changing the interlayer distance between the gratings to tune the propagation phase shift related to wave vectors,the position of the accidental BIC can be arbitrarily controlled in momentum ***,we present a general method and rigorous numerical analyses for extracting the polarization vector fields to observe the topological properties of BICs from the polarization-resolved transmission ***,an application of the highly efficient second harmonic generation assisted by quasi-BIC is *** work provides a straightforward strategy for manipulating BICs and studying their topological properties in momentum space.

关键词： polarization tuning resonator

Dynamics and vibration reduction performance of asymmetric tristable nonlinear energy sink

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Applied Mathematics and Mechanics(English Edition) 2024年第3期45卷 389-406页

作者： Hongyan CHEN Youcheng ZENG Hu DING Siukai LAI Liqun CHEN School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China Shanghai key {1. of Mechanics in Energy Engineering Shanghai Frontier Science Center of MechanoinformaticsShanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200444China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityKowloonHong KongChina

With its complex nonlinear dynamic behavior,the tristable system has shown excellent performance in areas such as energy harvesting and vibration suppression,and has attracted a lot of *** this paper,an asymmetric tristable design is proposed to improve the vibration suppression efficiency of nonlinear energy sinks(NESs)for the first *** proposed asymmetric tristable NES(ATNES)is composed of a pair of oblique springs and a vertical ***,the three stable states,symmetric and asymmetric,can be achieved by the adjustment of the distance and stiffness asymmetry of the oblique *** governing equations of a linear oscillator(LO)coupled with the ATNES are *** approximate analytical solution to the coupled system is obtained by the harmonic balance method(HBM)and verified *** vibration suppression efficiency of three types of ATNES is *** results show that the asymmetric design can improve the efficiency of vibration reduction through comparing the chaotic motion of the NES oscillator between asymmetric steady *** addition,compared with the symmetrical tristable NES(TNES),the ATNES can effectively control smaller structural *** other words,the ATNES can effectively solve the threshold problem of TNES failure to weak ***,this paper reveals the vibration reduction mechanism of the ATNES,and provides a pathway to expand the effective excitation amplitude range of the NES.

关键词： asymmetric nonlinear energy sink(NES) tristable vibration control po-tential barrier