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Tailoring chaotic motion of microcavity photons in ray and wave dynamics by tuning the curvature of space

science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 107-112页

作者： Wei Lin Yechun Ding Yongsheng Wang Peng Li Yanpeng Zhang Feng Yun Feng Li Key Laboratory for Physical Electronics and Devices of the Ministry of Education Shaanxi Key Lab of Information Photonic TechniqueSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China Department of Electrical and Photonics Engineering Technical University of DenmarkKgs.Lyngby 2800Denmark Center for Regenerative and Reconstructive Medicine Med-X InstituteThe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China Solid-State Lighting Engineering Research Center Xi’an Jiaotong UniversityXi’an 710049China

Microcavity photon dynamics in curved space is an emerging interesting area at the crossing point of nanophotonics,chaotic science,and non-Euclidean *** report the sharp difference between the regular and chaotic motions of cavity photons subjected to the varying space *** the island modes of regular motion rise in the phase diagram in the curved space,the chaotic modes show special mechanisms to adapt to the space curvature,including the fast diffusion of ray dynamics,and the localization and hybridization of the Husimi wavepackets among different periodic *** observations are unique effects enabled by the combination of the chaotic trajectory,the wave nature of light,and the non-Euclidean orbital motion,and therefore make the system a versatile optical simulator for chaotic science under quantum mechanics in curved space-time.

关键词： microcavity chaotic motion curved space

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Structural and Interfacial Effects on Drug Release Kinetics of Liquid‑Based Fibrous Catheter

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Advanced Fiber materials 2022年第6期4卷 1645-1655页

作者： Chunyan Wang Yaqi Hou Xingyi Wang Weijun Li Yunmao Zhang Shuli Wang Jing Zheng Xu Hou College of Chemistry and Chemical Engineering State Key Laboratory of Physical Chemistry of Solid SurfacesXiamen UniversityXiamen 361005China Collaborative Innovation Center of Chemistry for Energy Materials Xiamen UniversityXiamen 361005China Department of Electronic Science Fujian Engineering Research Center for Solid‑State LightingSchool of Electronic Science and EngineeringXiamen UniversityXiamen 361005China College of Physical Science and Technology Xiamen UniversityXiamen 361005China

Catheterization is indispensable in the field of modern ***,catheter-related thrombosis and infections almost inevitably occur during the process,and as drugs can only be administered at the end of catheter,auxiliary strategies are required for successful *** these intractable limitations,a type of self-adaptive,anti-coagulate liquidbased fibrous catheter has been *** importantly,it has positional drug release property that traditional catheters desperately need but couldn’t *** enlightening,the feasibility and performance of the positional drug release have only been demonstrated by fluorescents,the specific drug release kinetics remains unknown for adaptation to application ***,we systematically investigate the structural and interfacial effects of drug molecules and fibrous matrixes on drug release kinetics in a liquid-based fibrous *** calculations and experiments demonstrate that oleophilic and hydrophilic molecules release slowly due to a dissolution-diffusion *** molecules,however,will significantly affect the gating performance by affecting the interfacial stability,hence they release quickly with emulsifying the gating *** the significant impact of molecular properties and interfacial effects,matrix pore size also has a slight influence that molecules release faster in bigger *** this study,the liquid-based fibrous catheter may step further toward practical applications including chemotherapy,haemodialysis,angiography,*** overcome the existing catheter-related limitations.

关键词： Liquid-based materials Electrospinning fibrous materials Catheter Drug release

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Construction of ultra-stable NiFe armored catalyst for liquid and flexible quasi-solid-state rechargeable Zn-air batteries

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Nano research 2023年第4期16卷 4980-4986页

作者： Hanqin Sun Meiqi Zhao Chao Ma Wen Chen Yong Yang Yunhu Han Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'an 710072China Department of Chemistry Tsinghua UniversityBeijing 100084China School of Materials Science and Engineering Northwestern Polytechnical UniversityXi'an 710072China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts and TelecommunicationsNanjing 210023China

The commercial application of non-precious metal-based electrocatalysts is not only limited by the intrinsic activity of the catalysts,but also the stability of the catalysts is extremely ***,we fabricated an ultra-stable NiFe armored catalyst(Ar-NiFe/NC)by a simple secondary pyrolysis *** as-obtained Ar-NiFe/NC electrocatalyst exhibits an excellent bifunctional oxygen electrocatalytic performance with an activity indicatorΔE of 0.74 V *** hydrogen electrode(RHE).More importantly,the Ar-NiFe/NC electrocatalyst also shows a remarkable operational and storage *** accelerated durability test(ADT)cycles,no obvious degradation of oxygen electrocatalytic performance could be *** addition,the Ar-NiFe/NC electrocatalyst still exhibits an unbated oxygen electrocatalytic performance comparable to fresh catalysts after three months of air-exposed *** assembled liquid and flexible quasi-solid-state rechargeable Zn-air batteries with the Ar-NiFe/NC electrocatalyst exhibit impressive *** liquid rechargeable Zn-air batteries possess a high open-circuit voltage(OCV)of 1.43 V and a salient peak power density of 146.40 mW·cm^(−2),while the flexible quasi-solid-state rechargeable Zn-air batteries also exhibit an excellent OCV of 1.60 V and an exciting peak power density of 41.99 mW·cm^(−2).

关键词： bifunctional oxygen electrocatalyst outstanding durability liquid Zn-air batteries flexible quasi-solid-state Zn-air batteries

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Fe^(3+) ion quantification with reusable bioinspired nanopores

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Chinese Chemical Letters 2025年第2期36卷 179-184页

作者： Yanqiong Wang Yaqi Hou Fengwei Huo Xu Hou Institute of Flexible Electronics(IFE Future Technologies)Xiang'an CampusXiamen UniversityXiamen 361102China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Institute of Artificial Intelligence Xiamen UniversityXiamen 361005China Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361102China Engineering Research Center of Electrochemical Technologies of Ministry of Education Xiamen UniversityXiamen 361005China

Excessive Fe^(3+) ion concentrations in wastewater pose a long-standing threat to human *** low-cost,high-efficiency quantification of Fe^(3+) ion concentration in unknown solutions can guide environmental management decisions and optimize water treatment *** this study,by leveraging the rapid,real-time detection capabilities of nanopores and the specific chemical binding affinity of tannic acid to Fe^(3+),a linear relationship between the ion current and Fe^(3+) ion concentration was *** this linear relationship,quantification of Fe^(3+) ion concentration in unknown solutions was ***,ethylenediaminetetraacetic acid disodium salt was employed to displace Fe^(3+) from the nanopores,allowing them to be restored to their initial conditions and reused for Fe^(3+) ion *** reusable bioinspired nanopores remain functional over 330 days of *** recycling capability and the long-term stability of the nanopores contribute to a significant reduction in *** study provides a strategy for the quantification of unknown Fe^(3+) concentration using nanopores,with potential applications in environmental assessment,health monitoring,and so forth.

关键词： Bioinspired nanopores Fe^(3+)ion quantification Chemical binding affinity Tannic acid Reusability

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New thermoelectric semiconductors Pb_(5)Sb_(12+x)Bi_(6-x)Se_(32) with ultralow thermal conductivity

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Chinese Journal of Structural Chemistry 2024年第3期43卷 33-40页

作者： Ruizhi Yang Xia Li Weiping Guo Zixuan Chen Hongwei Ming Zhong-Zhen Luo Zhigang Zou Key Laboratory of Advanced Materials Technologies International(Hong KongMacao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou350108China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350108China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou350116China Eco-materials and Renewable Energy Research Center College of Engineering and Applied SciencesNanjing UniversityNanjing210093China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing210093China

Five new semiconductors Pb_(5)Sb_(12+x)Bi_(6-x)Se_(32)(x=0,1,2,3,and 4)have been synthesized for the first time,which adopt pavonite-type structure and crystallize in monoclinic C2/m space *** crystal structure is composed of two different types of polyhedral ***-I is a galena-like structure motif that forms with[MSe_(6)](M=Pb,Sb,and Bi)octahedra and slab-Ⅱcontains one octahedral[MSe_(6)]block and paired squared pyramids[MSe_(5)].Pb_(5)Sb_(12+x)Bi_(6-x)Se_(32)exhibits n-type semiconductor behaviors and the remarkable Seebeck coefficient from-64.1μV K^(-1)for x=0 sample to-242μV K^(-1)forx=4 sample at 300 ***,the Pb_(5)Sb_(12)Bi_(6)Se_(32)has the highest carrier concentration of 1.35×10^(20)cm^(-3)in pavonite-type *** complex compositions,mixed occupancies of the cations,and quasi-two-dimensional structure lead to the low lattice thermal conduc-tivity(κ_(lat))less than 0.48 W m^(-1)K^(-1)from 300 to 723 K,at which Pb_(5)Sb_(16)Bi_(2)Se_(32)especially shows the ultralow value of 0.25 W m^(-1)K^(-1).As a result,the thermoelectric figure of merit,ZT~0.34 at 723 K,is obtained for the intrinsic Pb_(5)Sb_(12)Bi_(6)Se_(32).

关键词： Thermoelectric Semiconductors Pavonite-type structure Pb_(5)Sb_(12+x)Bi_(6-x)Se_(32) Mixed occupancies Ultralow thermal conductivity

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Supertough spontaneously self-healing polymer based on septuple dynamic bonds integrated in one chemical group

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science China Chemistry 2022年第2期65卷 363-372页

作者： Luzhi Zhang Qingbao Guan Ao Shen Rasoul Esmaeely Neisiany Zhengwei You Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Shanghai Belt and Road Joint Laboratory of Advanced Fiber and Low-dimension Materials(Donghua University)College of Materials Science and EngineeringShanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineInstitute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical ApplicationsChina Textile Engineering SocietyShanghai 201620China Department of Materials and Polymer Engineering Hakim Sabzevari UniversitySabzevar ***Iran

The development of spontaneously self-healing materials with excellent mechanical properties remains a formidable challenge despite the extensive interest in such *** is because the self-healing and mechanical properties of a material are usually optimized via contradictory *** present study demonstrated a supertough spontaneously self-healing polymer,Fe-(2,6-diacetylpyridine dioxime)-urethane-based polyurethane(Fe-PPOU)based on septuple dynamic bonds integrated in one chemical group.A synergistic effect was induced by the presence of multiple dynamic crosslinking points,which comprised the integrated dynamic interactions,and the hidden lengths of the folded polymeric chains in ***,the mechanical and self-healing properties of the polymer were simultaneously ***-PPOU demonstrated the highest reported toughness(139.8 MJ m^(-3))among all the room-temperature spontaneously self-healing polymers with a nearly 100%healing ***-PPOU exhibited instant(30 s)self-healing to reach a strength of 1.6 MPa that was higher than the original strength of numerous recently reported self-healing polymers.

关键词： oxime-urethane bonds hydrogen bonds metal-coordination bonds 2 6-diacetylpyridine dioxime self-healing

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Cooperative Chemical Coupling and Physical Lubrication Effects Construct Highly Dynamic Ionic Covalent Adaptable Network for High-Performance Wearable electronics

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CCS Chemistry 2023年第5期5卷 1096-1107页

作者： Lijie Sun Hongfei Huang Qingbao Guan Lei Yang Luzhi Zhang Benhui Hu Rasoul Esmaeely Neisiany Zhengwei You Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineDonghua UniversityShanghai 201620 Key Laboratory of Clinical and Medical Engineering School of Biomedical Engineering and InformaticsNanjing Medical UniversityNanjing 211166 Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***

Covalent adaptable networks(CANs),which combine the benefits of traditional thermosets and thermoplastics,have attracted considerable *** dynamics of reversible covalent bonds and mobility of polymer chains in CANs determine the topological rearrangement of the polymeric network,which is critical to their superior features,such as self-healing and ***,we introduce an ionic liquid to dimethylglyoximeurethane(DOU)-based CANs to regulate both reversible bond dynamics and polymer chain mobility by cooperative chemical coupling and physical ***-molecule model experiments demonstrated that ionic liquids can catalyze dynamic DOU bond *** liquid also breaks the hydrogen bonds between polymeric chains,thereby increasing their *** a combined result,the activation energy of the dissociation of the dynamic network decreased from 110 to 85 kJ mol^(−1).Furthermore,as a functional moiety,the ionic liquid imparts new properties to CANs and will greatly expand their *** example,the consequent conductivity of resultant ionic CAN(iCAN)has demonstrated a great power to build high-performance multifunctional wearable electronics responsive to multiple stimulations including temperature,strain,and *** study provides a new design principle that simultaneously uses the chemical and physical effects of two structural components to regulate material properties enabling novel applications.

关键词： covalent adaptable networks polyurethane self-healing recycling ionic skin

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Phase selection-oriented mechanical properties tailoring forβ-type TiNbZrTaSi alloy fabricated by laser powder bed fusion

Advanced Powder Materials

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Advanced Powder materials 2023年第3期2卷 77-87页

作者： Xuan Luo Tao Song Feng Wang Haizhou Lu Limei Kang Hongwei Ma Dongdong Li Annett Gebert Chao Yang National Engineering Research Center of Near-net-shape Forming for Metallic Materials Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic MaterialsSouth China University of TechnologyGuangzhou 510640China State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan 430074China Institute for Complex Materials Leibniz Institute for Solid State and Materials Research Dresden01069DresdenGermany Guangzhou Railway Polytechnic Guangzhou 510430China

The morphology and distribution of silicides inα/αþβtype titanium alloys impress on their ***,the types of silicide precipitates and their formation mechanisms remain unclear inβ-type Ti–Nb–Zr–Ta *** this study,we report the precipitation behavior of silicides formed upon aging treatment of a laser powder bed fusion(LPBF)-fabricatedβ-type Ti–34.5Nb–6.9Zr–4.9Ta–1.4Si(wt%,TNZTS)*** further discuss their underlying formation mechanism and silicide selection-oriented mechanical properties tailoring for LPBF-fabricated TNZTS *** novel silicide precipitates were formed:a supersaturated Si–richβ–Ti matrix in the form of a network that can further transform into the(Ti,Zr)2Si(S2)phase with the increase of aging temperature;and a short,rod-like S2 precipitate adjacent to pre-existing dot-shaped *** former results from the aggregation of Si solute atoms towards to the dislocation walls/microbands and the subsequent precipitation reaction,while the latter arises from the considerable micro-strain around the phase boundary between the dotshaped S2 andβ-Ti owing to the large difference in their thermal expansion coefﬁ*** aging-treated TNZTS alloy exhibits a good combination of tensile strength(10835 MPa)and fracture strain(5.6%1.0%),which is attributed to precipitation strengthening,grain-boundary strengthening,and discontinuous intergranular silicide derived from phase *** obtained results provide a basis for the design and fabrication of biomedical Sicontainingβ-type Ti alloys with excellent mechanical properties.

关键词： Laser powder bed fusion β-type titanium alloys Silicide precipitates Microstructure Mechanical propertie

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Wireless, Multifunctional System-Integrated programmable Soft Robot

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Nano-Micro Letters 2025年第7期 20-33页

作者： Sungkeun Han Jeong-Woong Shin Joong Hoon Lee Bowen Li Gwan-Jin Ko Tae-Min Jang Ankan Dutta Won Bae Han Seung Min Yang Dong-Je Kim Heeseok Kang Jun Hyeon Lim Chan-Hwi Eom So Jeong Choi Huanyu Cheng Suk-Won Hwang KU-KIST Graduate School of Converging Science and Technology Korea University Semiconductor R&D Center Samsung Electronics Co.Ltd. SK Hynix Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity Park Center for Neural Engineering The Pennsylvania State UniversityState CollegeUniversity Park Department of Integrative Energy Engineering Korea University Hanwha Systems Co. Ltd. Department of Materials Science and Engineering The Pennsylvania State UniversityState CollegeUniversity Park Materials Research Institute The Pennsylvania State UniversityState CollegeUniversity Park Center for Biomaterials Biomedical Research InstituteKorea Institute of Science and Technology (KIST) Department of Mechanical Engineering The Pennsylvania State UniversityUniversity Park

Soft robots have partially or entirely provided versatile opportunities for issues or roles that cannot be addressed by conventional machine robots, although most studies are limited to designs, controls, or physical/mechanical motions. Here, we present a transformable, reconfigurable robotic platform created by the integration of magnetically responsive soft composite matrices with deformable multifunctional electronics. Magnetic compounds engineered to undergo phase transition at a low temperature can readily achieve reversible magnetization and conduct various changes of motions and shapes. Thin and flexible electronic system designed with mechanical dynamics does not interfere with movements of the soft electronic robot, and the performances of wireless circuit, sensors, and devices are independent of a variety of activities, all of which are verified by theoretical studies. Demonstration of navigations and electronic operations in an artificial track highlights the potential of the integrated soft robot for on-demand, environments-responsive movements/metamorphoses, and optoelectrical detection and stimulation. Further improvements to a miniaturized, sophisticated system with material options enable in situ monitoring and treatment in envisioned areas such as biomedical implants.

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Chemical order-disorder nanodomains in Fe3Pt bulk alloy

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National science Review 2022年第12期9卷 211-219页

作者： Qiang Li Yang Ren Qinghua Zhang Lin Gu Qingzhen Huang Hui Wu Jing Sun Yili Cao Kun Lin Xianran Xing Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Solid State Chemistry University of Science and Technology Beijing X-Ray Science Division Argonne National Laboratory Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences NIST Center for Neutron Research National Institute of Standards and Technology

Chemical ordering is a common phenomenon and highly correlated with the properties of solid *** means of the redistribution of atoms and chemical bonds,it invokes an effective lattice adjustment and tailors corresponding physical *** date,however,directly probing the 3D interfacial interactions of chemical ordering remains a big *** this work,we deciphered the interlaced distribution of nanosized domains with chemical order/disorder in Fe3pt bulk *** F-STEM images evidence the existence of such *** reverse Monte Carlo method with the X-ray pair distribution function data reveal the 3D distribution of local structures and the tensile effect in the disordered domains at the single-atomic *** chemical bonding around the domain boundary changes the bonding feature in the disordered side and reduces the local magnetic moment of Fe *** results in a suppressed negative thermal expansion and extended temperature range in Fe3Pt bulk alloy with *** study demonstrates a local revelation for the chemical order/disorder nanodomains in bulk *** understanding gained from atomic short-range interactions within the domain boundaries provides useful insights with regard to designing new functional compounds.

关键词： Fe3Pt alloy chemical order nanodomain local structure pair distribution function

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