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30th International Conference on Mobile Computing and Networking, ACM MobiCom 2024

作者： He, Guorong Xie, Yaxiong Zheng, Chao Zhang, Longlong Wu, Qi Zhang, Wenyan Xu, Dan Chen, Xiaojiang Northwest University Xi'an China University at Buffalo SUNY New York United States Shaanxi International Joint Research Centre for the Battery-Free Internet of Things China Xi'an Advanced Battery-Free Sensing and Computing Technology International Science and Technology Cooperation Base China Internet of Things Research Center Northwest University China Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education China

ISBN: (纸本)9798400704895

Pesticide overuse poses significant risks to human health and environmental integrity. Addressing the limitations of existing approaches, which struggle with the diversity of pesticide compounds, portability issues, and environmental sensitivity, this paper introduces Hornbill. A wireless and battery-free electrochemical bio-tag that integrates the advantages of NFC technology with electrochemical biosensors for portable, precise, and touchless multi-pesticide detection. The basic idea of Hornbill is comparing the distinct electrochemical responses between a pair of biological receptors and different pesticides to construct a unique set of feature fingerprints to make multi-pesticide sensing feasible. To incorporate this idea within small NFC tags, we reengineer the electrochemical sensor, spanning the antenna to the voltage regulator. Additionally, to improve the system's sensitivity and environmental robustness, we carefully design the electrodes by combining microelectrode technology and materials science. Experiments with 9 different pesticides show that Hornbill achieves a mean accuracy of 93% in different concentration environments and its sensitivity and robustness surpass that of commercial electrochemical sensors. © 2024 Copyright is held by the owner/author(s). Publication rights licensed to ACM.

关键词： Electrochemical biosensors

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Benzobisthiazole Polymer with Resonance-assisted Hydrogen Bonds for High-performance Transistor and Solar Cell Applications

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Chinese Journal of Polymer science 2022年第2期40卷 147-156页

作者： Bing-Yong Liu Cong Xie Cong-Wu Ge Meng-Meng Cui Wei Yang Zai-Fei Ma Xi-Ke Gao Yin-Hua Zhou Qing Zhang Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical EngineeringShanghai Jiaotong UniversityShanghai 200240China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsDonghua UniversityShanghai 201620China

Benzobisthiazole polymer with resonance-assisted hydrogen bonds(RAHBs)has been synthesized for both organic field-effect transistor and polymer solar cell *** properties of the hydrogen bonded polymer are compared with the reference polymer without ***-crystal X-ray diffraction analyses of the building block reveal that the RAHB interactions are formed between the carbamate hydrogen and imine nitrogen of the *** hydrogen donor and acceptor are connected byπ-conjugated molecular framework and the hydrogen-bridged quasi aromatic rings lock the conformation of the building *** building block adopted a layered sandwich packing in crystal instead of slipped herringbone stacking which was often found in the crystal of benzobisthiazole *** polymer PCBTZ-TT with RAHBs showed deeper HOMO/LUMO energy level(about 0.2 eV)than reference *** PCBTZ-TT demonstrated the hole mobility of0.96 cm^(2)·V^(-1)·s^(-1) in field-effect transistor devices and achieved power conversion efficiency of 13.6%in solar cell devices with Y6 as acceptor without any additive.

关键词： Resonance-assisted hydrogen bonding Benzobisthiazole Thiazole OFET OPV

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Spatiotemporal Visualization of Cell Membrane with Amphiphilic Aggregation-Induced Emission-Active Sensor

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CCS Chemistry 2022年第5期4卷 1619-1632页

作者： Youheng Zhang Qi Wang Zhirong Zhu Weijun Zhao Chenxu Yan Zhenxing Liu Ming Liu Xiaolei Zhao He Tian Wei-Hong Zhu Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterShanghai Key Laboratory of Functional Materials ChemistryInstitute of Fine ChemicalsFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237

High-fidelity spatiotemporal monitoring of the cell membrane is critically ***,commercial fluorescence probes are stalked by the aggregation-caused quenching(ACQ)effect,and the reported aggregation-induced emission(AIE)-active probes are always limited by nonspecific aggregations in the biological ***,we report the rational molecular design of a stateof-the-art amphiphilic AIE luminogen(AIEgen),membrane tracker QMC12,using a core quinolinemalononitrile(QM)structure to suppress the ACQ effect,incorporate a positively charged pyridinium to regulate dispersity and strengthen the binding affinity to the negatively charged cell membrane,and extend the alky chain to improve the anchoring ability to the cell *** membrane tracker QMC12,which disperses well in both hydrophilic and lipophilic environments,not only achieves minimal background interference and high signal-to-noise(S/N)ratio in the“ultrafast”visualization of the cell membrane,but also endows a“wash-free”***,it realizes a spatial three dimensional(3D)view in a multicellular spheroid model and morphology changes over ***,QMC12 avoids false staining and signal loss and unprecedentedly achieves the direct observation of the cell membrane’s microstructure,which could elucidate spatiotemporal 3D model studies of the intercellular information exchange.

关键词： aggregation-induced emission amphiphilicity cell membrane imaging high-fidelity spatiotemporal dimensions

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G-C3n4 as Ballistic Electron Transport "Tunnel" in Cspbbr3-Based Ternary Photocatalyst for Gas Phase Co2 Reduction

SSRN

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SSRN 2024年

作者： Li, Dong Li, Renyi Zhao, Yizhou Wang, Kaixuan Fan, Ke Guo, Wei Li, Yujing Chen, Qi Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced Materials School of Materials Science and Engineering Beijing Institute of Technology Beijing100081 China State Key Laboratory of Explosion Science and Technology School of Physics Beijing Institute of Technology Beijing100081 China State Key Laboratory of Fine Chemicals Institute of Artificial Photosynthesis Institute for Energy Science and Technology Dalian University of Technology Dalian116024 China

Perovskite CsPbBr3 quantum dot shows great potential in artificial photosynthesis due to its excellent optoelectronic properties. However, its photocatalytic activity is limited by the lack of catalytic active sites and severe charge recombination. In this work, a CsPbBr3@Ag-C3N4 ternary heterojunction photocatalyst is designed and synthesized for high-efficiency CO2 reduction. The CsPbBr3 quantum dots and Ag nanoparticles are chemically anchored on the surface of g-C3N4 sheets, forming an electron transfer tunnel from CsPbBr3 quantum dots to Ag nanoparticles via g-C3N4 sheets. The CsPbBr3@Ag-C3N4 ternary photocatalyst with spatial separation of photogenerated carriers generates a conversion rate of 19.49 μmol·g–1·h–1 with almost 100% CO selectivity, a 3.13-fold enhancement in photocatalytic performance as compared to CsPbBr3 quantum dots. Density functional theory calculations disclose the rapid CO2 adsorption/activation and the decreased free energy (0.66 eV) of *COOH formation at the interface of Ag nanoparticles and g-C3N4 compared to the g-C3N4 surface, leading to the superior photocatalytic performance, while the thermodynamically favored CO desorption contributes to the high CO selectivity. This work affords a novel strategy of constructing perovskite-based photocatalyst by modulating catalyst structure and provides in-depth insights for efficient CO2 conversion. © 2024, The Authors. All rights reserved.

关键词： Semiconductor quantum dots

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Novel photoelectric material of perovskite-like(CH_(3))_(3)SPbI_(3) nanorod arrays with high stability

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Journal of Energy Chemistry 2021年第8期30卷 581-588,I0012页

作者： Ruiyuan Hu Chuangye Ge Liang Chu Yifei Feng Shanshan Xiao Yuhui Ma Wei Liu Xing'ao Li Mohammad Khaja Nazeeruddin Institute of Advanced Materials&New Energy Technology Engineering Laboratory of Jiangsu Province&School of Materials Science and Engineering&School of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China Hoffmann Institute of Advanced Materials Shenzhen PolytechnicShenzhen 518055China Group for Molecular Engineering of Functional Materials EPFL Valais WallisCH-1951 SionSwitzerland

Organometallic halide perovskite materials make great achievements in optoelectronic fields,especially in solar cells,in which the organic cations contain amine ***,the amine with NàH bonds is easily hydrolyzed with moisture in the air,weakening the perovskite materials *** is desirable to develop other non-amine stable perovskite *** this work,sulfur-based perovskite-like(CH_(3))_(3)SPbI_(3) nanorod arrays were fabricated by a solution-processed method,which can be indexed hexagonal crystal structure in the space group P63 *** binding force is exceptionally strong between the non-amine(CH_(3))_(3) S+and[PbI_(6)]_(4)-octahedral,leading to high stability of(CH_(3))_(3)SPbI_(3).The(CH_(3))_(3)SPbI_(3) nanorod arrays can keep the morphology and crystal structure in an ambient atmosphere over 60 *** addition,the(CH_(3))_(3)SPbI_(3) nanorod arrays can offer direct charge transfer channels,which show excellent optoelectronic ***(CH_(3))_(3)SPbI_(3) nanorod arrays-based solar cells with VOx hole transfer layers achieved a power conversion efficiency of 2.07%with negligible *** the(CH_(3))_(3)SPbI_(3) nanorod arrays were also effectively applied in photodetectors with interdigitated gold *** work demonstrates that sulfur-based perovskite-like(CH_(3))_(3)SPbI_(3) is a novel promising stable compound with great potential for practical optoelectronic applications.

关键词： Perovskite solar cells High stability (CH_(3))_(3)SPbI_(3) nanorod arrays Photodetectors

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基于机器学习的氮掺杂石墨炔力学性能预测

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science China Materials 2024年第4期67卷 1129-1139页

作者：张存杨博林彭志龙陈少华 Department of Engineering Mechanics Shijiazhuang Tiedao UniversityShijiazhuang 050043China Hebei Key Laboratory of Intelligent Materials and Structures Mechanics Shijiazhuang Tiedao UniversityShijiazhuang 050043China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Beijing Institute of TechnologyBejing 100081China Hebei Research Center of the Basic Discipline Engineering Mechanics Shijazhuang Tiedao UniversityShijiazhuang 050043China Provincial Collaborative Innovation Center of Mechanics of Intelligent Materials in Hebei Shijiazhuang Tiedao UniversityShijiazhuang 050043China

氮掺杂γ-石墨二炔(N-GDY)因其在能源、电子元器件和催化领域具有重要应用前景而备受关注.研究表明,N-GDY在不同的氮掺杂情况下会表现出迥异的物理化学性质.由于氮掺杂的多样性,N-GDY的理论及应用研究受到了极大的限制.鉴于此,本文采用... 详细信息

氮掺杂γ-石墨二炔(N-GDY)因其在能源、电子元器件和催化领域具有重要应用前景而备受关注.研究表明,N-GDY在不同的氮掺杂情况下会表现出迥异的物理化学性质.由于氮掺杂的多样性,N-GDY的理论及应用研究受到了极大的限制.鉴于此,本文采用鄂维南等人提出的DeepMD方法训练得到了具有第一性原理精度、适用于N-GDY的机器学习势.利用该机器学习势,系统研究了氮掺杂模式对N-GDY力学性能的影响.研究发现,氮原子掺杂会导致N-GDY的抗拉强度降低.在单个碳链上掺杂氮原子时,N-GDY的抗拉强度随着氮原子掺杂位点到苯环的距离变小而减弱.相邻碳链氮原子共掺杂能够使N-GDY表现出更强的各向异性力学特征.本文研究结果对N-GDY在能源存储和柔性设备等领域的潜在应用提供了理论支持,同时也表明了机器学习势在从大规模数据集中学习并预测碳纳米材料复杂力学性质方面的潜力,为纳米材料设计及工程应用具有重要指导作用.

关键词：机器学习力学性能预测氮掺杂碳纳米材料能源存储力学特征第一性原理电子元器件

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Sub‑1 nm:A Critical Feature Size in Materials science

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Accounts of Materials Research 2022年第12期3卷 1285-1298页

作者： Simin Zhang Xun Wang MOE Key Laboratory of Cluster Science Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green ApplicationsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China Lab of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua UniversityBeijing 100084China

CONSPECTUS:Size is one of the most important issues in materials *** of conventional nanomaterials are usually one to one hundred nanometers and,according to size effect,nanomaterials usually exhibit different optical,electrical,magnetic,thermal,and catalytic properties compared with bulk *** the important transition from atomic scale to nanoscale,subnanometer scale is a critical feature size in materials *** the size of nanomaterials decreasing to subnanometer scale,they further show some distinctive properties.

关键词： materials. properties. size

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Structural revolution of atomically dispersed Mn sites dictates oxygen reduction performance

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Nano Research 2021年第12期14卷 4512-4519页

作者： Zhengkun Yang Xiaolin Wang Mengzhao Zhu Xinyan Leng Wenxing Chen Wenyu Wang Qian Xu Li-Ming Yang Yuen Wu School of Chemistry and Materials Science iChEMHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei230026China Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica Key Laboratory of Material Chemistry for Energy Conversion and StorageMinistry of EducationHubei Key Laboratory of Materials Chemistry and Service FailureHubei Engineering Research Center for Biomaterials and Medical Protective MaterialsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074China Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University)Ministry of EducationAnhui Graphene Engineering LaboratoryAnhui UniversityHefei230601China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China National Synchrotron Radiation Laboratory(NSRL) Hefei230026China

An efficient preparation and local coordination environment regulation of isolated single-atom sites catalysts(ISASC)for improved activity is still ***,we develop a solid phase thermal diffusion strategy to synthesize Mn ISASC on highly uniform nitrogen-doped carbon nanotubes by employing MnO_(2) nanowires@ZIF-8 core-shell *** high-temperature,the Mn species break free from core-MnO_(2) lattice,which will be trapped by carbon defects derived from shell-ZIF-8 carbonization,and immobilized within carbon ***,the poly-dispersed Mn sites with two nitrogen-coordinated centers can be controllably renovated into four-nitrogen-coordinated Mn sites using NH3 treatment *** experimental and computational investigations indicate that the symmetric coordinated Mn sites manifest outstanding oxygen reduction activity and superior stability in alkaline and acidic *** work not only provides efficient way to regulate the coordination structure of ISASC to improve catalytic performance but also paves the way to reveal its significant promise for commercial application.

关键词： thermal diffusion coordination repairing single-atom manganese oxygen reduction catalysis fuel cells

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In-situ/operando characterization techniques in lithium-ion batteries and beyond

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Journal of Energy Chemistry 2021年第8期30卷 191-211,I0005页

作者： Haoyu Li Shaohua Guo Haoshen Zhou Center of Energy Storage Materials&Technology College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNational Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructureNanjing UniversityNanjing 210093China Shenzhen Research Institute of Nanjing University Shenzhen 51800China National Institute of Advanced Industrial Science and Technology(AIST) Umezono 1-1-1TsukubaJapan

Nowadays,in-situ/operando characterization becomes one of the most powerful as well as available means to monitor intricate reactions and investigate energy-storage mechanisms within advanced *** new applications and novel devices constructed in recent years are necessary to be reviewed for inspiring subsequent ***,we summarize the progress of in-situ/operando techniques employed in rechargeable *** members of this large family are divided into three sections for introduction,including bulk material,electrolyte/electrode interface and gas *** each part,various energy-storage systems are mentioned and the related experimental details as well as data analysis are *** simultaneous strategies of various in-situ methods are highlighted as ***,current challenges and potential solutions are concluded towards the rising influence and enlarged appliance of in-situ/operando techniques in the battery research.

关键词： In-situ/operando Characterization techniques Secondary batteries

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Dynamic Response of Spherical Shells Subjected to the Underwater Impulse

SSRN

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SSRN 2023年

作者： Zhang, Jiguang Liu, Song Zhang, Jian Huang, Zhixin Chen, Zihao Li, Ying School of Naval Architecture Ocean and Energy Power Engineering Wuhan University of Technology Wuhan430064 China State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing100081 China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China

This paper investigates the dynamic response of spherical shells subjected to underwater impulses. A projectile-impact-based underwater shock tube is adopted to carry to the impact tests and numerical simulations are performed to reveal the fluid-structure interaction mechanism. The effects of flyer velocity, shell thickness, and curvatures on shell deformation and failure modes are further studied. Results show that the curvature has a certain convergence effect on the reflected wave. When a spherical shell with the same thickness and radius of curvature only deforms but does not crack under different impact velocities of flaps, faster deformation velocity at the center of the spherical shell leads to a larger residual deformation. The residual displacement spherical shells has a nonlinear relationship with the thickness and curvature radius at the same underwater impact load. The slope of the residual displacement-curvature radius curve of the center point of the target plate increases with the decrease of the shell thickness, while the slope of the residual displacement-thickness curve of the center point increases with the increase of the curvature radius. Quantitative structure–load–performance relation is carried out to facilitate the advanced study of metallic structures and guide the impact resistance design of spherical shells in marine structures. © 2023, The Authors. All rights reserved.

关键词： Dynamic response

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