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Scalable and High-Quality Monolayer Graphene Transfer onto Polymer Membranes Assisted by Camphor

Chinese Journal of Polymer Science 2024年第12期42卷 1986-2001,I0011页

作者： Jun-Kan yue Jing Liang qiao-yu tan Man Chen Jing-Wen Li Qing Guo Run-Lai Li Qiang Fu College of Polymer Science&Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065China

The quest for scalable integration of monolayer graphene into functional composites confronts the bottleneck of high-fidelity transfer onto substrates,crucial for unlocking graphene’s full potential in advanced *** this,our research introduces the camphor-assisted transfer(CAT)method,a novel approach that surmounts common issues of residue and structural deformation endemic to existing *** in the sublimation dynamics of camphor,the CAT method achieves a clean,contiguous transfer of centimeter-scale monolayer graphene onto an array of polymer films,including ultra-thin polyethylene *** resultant ultrathin graphene-polyethylene(gPE)films,characterized by their exceptional transparency and conductivity,reveal the CAT method’s unique ability to preserve the pristine quality of graphene,underscoring its practicality for preparing flexible transparent electrodes by monolayer ***-depth mechanism investigation into the camphor sublimation during CAT has led to a pivotal realization:the porosity of the target polymer substrate is a determinant in achieving high-quality graphene *** that camphor sublimates initially from the polymer side is crucial to prevent the formation of wrinkles or delamination of *** extensive examination of CAT on a spectrum of commonly used polymer films,including PE,PP,PTFE,PI and PET,we have confirmed this important *** discovery offers crucial guidance for fabricating monolayer graphene-polymer composite films using methods akin to CAT,underscoring the significance of substrate selection in the transfer process.

关键词： Polyethylene Monolayer graphene Camphor Graphene/polymer composites van der Waals interaction

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Experimental realization of quantum controlled teleportation of arbitrary two-qubit state via a five-qubit entangled state

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Chinese Physics B 2022年第5期31卷 101-106页

作者： Xiao-Fang Liu Dong-Fen Li yun-Dan Zheng Xiao-Long Yang Jie Zhou yu-qiao tan Ming-Zhe Liu School of Computer and Network Security Chengdu University of TechnologyChengdu 610059China

Quantum controlled teleportation is the transmission of the quantum state under the supervision of a third *** paper presents the theoretical and experimental results of an arbitrary two-qubit quantum controlled teleportation scheme,in which the sender Alice only needs to perform two Bell state measurements and the receiver Bob can perform an appropriate unitary operation to reconstruct the arbitrary two-qubit states under the control of the supervisor *** operation process of the scheme is verified on the IBM quantum experience platform,and the accuracy of the transmitted quantum state is further checked by performing quantum state ***,a good fidelity is obtained by using the theoretical density matrix and the experimental density matrix.A sequence of photonic states is introduced to analyze the possible intercept-replace-resend,intercept-measure-resend,and entanglement-measure-resend attacks on this *** results proved that our scheme is highly secure.

关键词： IBM quantum experience controlled quantum teleportation fidelity quantum state tomography

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Structural engineering of high-entropy alloys for advanced electrocatalytic reactions

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Tungsten 2025年第1期7卷 1-31页

作者： qiao Xie Ying-Jie yu Hai-Jun Zhang Ya-Ping Deng Wen Lei The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Department of Chemical Engineering Waterloo Institute for Sustainable Energy Waterloo Institute for Nanotechnology University of Waterloo

High-entropy alloys(HEAs) have emerged as promising candidates to replace traditional precious metal catalysts,owing to their unique chemical and physical *** review commences by revisiting the fundamental concepts of HEAs,including their synthesis methods and structural control strategies in *** underscores the critical role of meticulously manipulating both macroscopic and microscopic structures of the HEAs to optimize their catalytic performance.A deep understanding of the structure-activity relationship in HEAs across various configurations is pivotal in developing more effective *** review methodically encapsulates the research progress of structural control strategies for HEAs in achieving efficient energy conversion,with the aim of gaining a better understanding of the relationship between structure and *** review concludes by summarizing the current achievements and challenges,and suggestions for potential future directions of HEAs in the fields of energy conversion and environmental purification.

关键词： Electrocatalytic Energy conversion High-entropy alloys Structural modulation

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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin qiao yu Zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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Formation of disinfection byproducts from accumulated soluble products of oleaginous microalga after chlorination

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Frontiers of Environmental Science & Engineering 2017年第6期11卷 1-7页

作者： yu Liu qiao Zhang yu Hong Beijing Key Laboratory for Source Control Technology of Water Pollution Beijing Forestry University Beijing 100083 China

When microalgae are simultaneously applied for wastewater treatment and lipid production, soluble algal products （SAP） should be paid much attention, as they are important precursors for formation of disinfection byproducts （DBPs）, which have potential risks for human health. Chlorella sp. HQ is an oleaginous microalga that can generate SAP during growth, especially in the exponential phase. This study investigated the contribution of SAP from Chlorella sp. HQ to DBP formation after *** predominant DBP precursors from SAP were identified with the 3D excitation-emission matrix fluorescence. After chlorination, a significant reduction was observed in the fluorescence intensity of five specific fluorescence regions, particularly aromatic proteins and soluble microbial by-product-like regions, accompanied with slight shifting of the peak. The produced DBPs were demonstrated to include trihalomethanes and haloacetic acids. As the algal cultivation time was extended in wastewater, the accumulated SAP strengthened the formation of DBPs. The trend for DBP formation was as follows： chloroform〉dichloroacetic acid〉trichloroacetic acid.

关键词： Chlorella sp. HQ Chlorination Disinfection byproducts Fluorescence spectroscopy Soluble algal products

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Microstructural evolution and mechanical properties of a new Al-Cu-Li-X alloy at different solution temperatures

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Rare Metals 2021年第3期40卷 635-642页

作者： Long Zhang Zi-qiao Zheng Jin-Feng Li Cheng-yu tan Yong-Lai Chen Xu-Hu Zhang School of Materials Science and Engineering Central South UniversityChangsha 410083China Aerospace Research Institute of Materials and Processing Technology Beijing 100076China

The micros tructural evolution and mechanical properties of a new Al-3.8 Cu-1.2 Li-0.4 Mg-0.4 Zn-0.4 Ag-0.3 Mn-X alloy treated at different solution temperatures were *** grain size was measured in optical micrograph(OM).The residual particles and the major precipitates were identified by electron probe microanalysis(EPMA),scanning electron microscopy(SEM) and transmission electron microscope(TEM),*** results show that the peak strength appears at 530℃/1 h+T6(165℃/20 h) and the values are 566.2 MPa(tensile strength) and 538.2 MPa(yield strength) with the elongation of 6.5 %.The strength of the alloy increases rapidly with the amount of the precipitates T1 and θ’ increasing when the solution temperature is530℃.The increase in density of precipitates is resulted from the residual particles Al2 Cu,and particles enriched with Cu,Mg,Zr and Ag dissolve into matrix gradually with the solution temperature ***,the number of precipitates decreases and part of the grain boundary weakens with a further increase in solution temperature from 540 to 550℃,leading to a decline of strength.

关键词： Solution treatment Precipitates Microstructure Al-Cu-Li alloys

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Elastoplastic pipe-soil interaction analyses of partially-supported jointed water mains

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第11期9卷 1497-1506页

作者： yu SHAO Tu-qiao ZHANG Department of Civil Engineering Zhejiang University Hangzhou 310027 China

Water distribution networks are essential components of water supply systems. The combination of pipe structural deterioration and mechanics leads to the failure of pipelines. A physical model for estimating the pipe failure must include both the pipe deterioration model and mechanics model. Winkler pipe-soil interaction (WPSI), an analytical mechanics model developed by Rajani and Tesfamariam (2004), takes external and internal loads, temperature changes, loss of bedding support, and the elastoplastic effect of soil into consideration. Based on the WPSI model, a method to evaluate the elastic and plastic areas was proposed in the present study. An FEM model based on pipe-soil interaction (PSI) element was used to verify the analytical model. Sensitivity analyses indicate that the soft soil, long pipe and high temperature induced the axial plastic deformation more likely, which, however, may not occur in normal scenarios. The soft soil, pipes in small diameters, long unsupported bedding are prone to form flexural plastic area. The results show that the pipes subjected to the same loads have smaller stresses in the elastoplastic analysis than elastic analysis. The difference, however, is slight.

关键词： Elastoplastic soil Winkler pipe-soil interaction (WPSI) Jointed water mains

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Modeling method and preliminary model of Asteroid Toutatis from Chang'E-2 optical images

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Acta Mechanica Sinica 2014年第3期30卷 310-315页

作者： Xiang-yu Li Dong qiao School of Aerospace Engineering Beijing Institute of Technology Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of Education

Shape modeling is fundamental to the analysis of dynamic environment and motion around asteroid. Chang＇E- 2 successfully made a flyby of Asteroid 4179 Toutatis and obtained plenty of high-resolution images during the mis- sion. In this paper, the modeling method and preliminary model of Asteroid Toutatis are discussed. First, the optical images obtained by Chang＇E-2 are analyzed. Terrain and silhouette features in images are described. Then, the modeling method based on previous radar model and preliminary information from optical images is proposed. A preliminary polyhedron model of Asteroid Toutatis is established. Finally, the spherical harmonic coefficients of Asteroid Toutatis based on the polyhedron model are obtained. Some parameters of model are analyzed and compared. Although the model proposed in this paper is only a preliminary model, this work offers a valuable reference for future high-resolution models.

关键词： Chang'E-2 Asteroid Toutatis Shape modeling.Polyhedron method

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Mg-Fe LDH sealed PEO coating on magnesium for biodegradation control,antibacteria and osteogenesis

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Journal of Materials Science & Technology 2022年第10期105卷 57-67页

作者： Dongdong Zhang Jielong Zhou Feng Peng Ji tan Xianming Zhang Shi Qian yuqin qiao yu Zhang Xuanyong Liu State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhouGuangdong 510080China School of Chemistry and Materials Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences1 Sub-lane XiangshanHangzhou 310024China Cixi Center of Biomaterials Surface Engineering Shanghai Institute of CeramicsChinese Academy of SciencesNingbo 315300China

Attempt of developing bio-safety and functional layered double hydroxides(LDHs)modifed plasma electrolytic oxidation(PEO)coatings,has become a hotspot in the protection of magnesium(Mg)based biomedical *** the present work,Mg-Fe LDH flms with different Fe contents were fabricated on PEO coating via a novel two-step method:frstly,the Fe OOH flms were prepared by immersing PEO sample in Fe^(2+)-containing solution,and then Mg-Fe LDH flms were formed by transforming the Fe OOH flms via a hydrothermal treatment in *** highly-oriented LDH nano-sheets could enhance the anti-corrosion performance of PEO coating,which was proved by the results of electrochemical test,hydrogen evolution and corroded ***/Mg-Fe LDH coatings showed a low hemolysis rate(less5%)than PEO *** addition,PEO/Mg-Fe LDH coatings were more favorable for cell adhesion and proliferation than PEO ***,PEO/Mg-Fe LDH coatings showed good photothermal conversion property,which demonstrated the excellent rapid antibacterial effect under NIR *** vitro culture of rat bone marrow stem cell(r BMSC)suggested that cells cultured in the extract of PEO/Mg-Fe LDH coatings had a better osteogenic *** vivo subcutaneous implantation test revealed that PEO/Mg-Fe LDH coatings exhibited good anti-corrosion and histocompatibility.

关键词： Magnesium Plasma electrolytic oxidation Layered double hydroxide Anti-corrosion Anti-bacteria Osteogenesis

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Novel bake hardening mechanism for bainite-strengthened complex phase steel

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Journal of Materials Science & Technology 2023年第12期143卷 117-128页

作者： Hang yu yu Yan Cheng Zhang Lijie qiao Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Corrosion and Protection Center University of Science and Technology BeijingBeijing 100083China

In the automobile industry,stamping and paint baking processes are used to strengthen components,and this not only saves costs,but also further reduces the bodyweight of *** this work,the bake hardening mechanism of the complex phase(CP)steel CP980 was explored by comparing it with that of DP1180,which has a clear bake hardening mechanism and a carbon content similar to that of *** analyzing the bake hardening response and the microstructural changes of the two steels,we found that the bake hardening process of CP980 was divided into three *** the first two stages,the carbon atoms diffused into dislocations to form Cottrell atmosphere pinning dislocations,and excess car-bon atoms formed carbon clusters or low-temperature carbide pinning dislocations that were similar to *** the third stage,the dislocation acted as rapid channels for carbon diffusion,and fine cementite gradually formed when the carbon clusters gathered at the dislocations as precursors,resulting in pre-cipitation *** novel bake-hardening(BH)mechanism is crucial for obtaining a comprehensive understanding of the strain-baking behavior of advanced high-strength steals(AHSS).

关键词： Age hardening Bainitic steel Carbon diffusion Cementite Mechanical property Automotive weight reduction

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