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Progress on Bionic Textured Cutting Tools:A Review and Prospects

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Journal of Bionic Engineering 2024年第1期21卷 19-55页

作者： Hong Wei Guangjun Chen Zhuang Chen Zhiwei Yu Jiashuai Huang Tianjin key laboratory of High Speed Cutting and Precision processing Tianjin 300222China School of Mechanical Engineering Tianjin University of Technology and EducationTianjin 300222China

Cutting tools are known as the“productivity”of the manufacturing industry,which affects the production efficiency and quality of the workpiece,and has become the focus of research and attention in academia and ***,traditional cutting tools often suffer from adhesion or wear during the cutting process,which considerably reduces the cutting efficiency and service life of the tools,and makes it difficult to meet current production *** solve the above problems,scholars have introduced bionics into the tool’s design,applying the microscopic structure of the biological surface to the tool surface to alleviate the tool’s *** paper mainly summarizes the research progress of bionic textured cutting ***,categorize whether the bionic texture design is inspired by a single organism or multiple ***,it is discussed that the non-smooth surface of the biological surface has five characteristics:hydrophilic lubricity,wear resistance,drag reduction and hydrophobicity,anti-adhesion,and arrangement,and the non-smooth structure of these different characteristics are applied to the surface of the tool is designed with bionic ***,the cutting performance of bionic textured cutting tools is *** anti-friction and wear-resisting mechanism of bionic textured cutting tools is ***,some pending problems and perspectives have been proposed to provide new inspirations for the design of bionic textured cutting tools.

关键词： Bionic textured cutting tools Biological microstructure characteristics Cutting performance Anti-friction and wear-resisting mechanism

Observation of interlayer excitons in trilayer type-Ⅱ transition metal dichalcogenide heterostructures

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Nano Research 2022年第10期15卷 9588-9594页

作者： Biao Wu Haihong Zheng Junnan Ding Yunpeng Wang Zongwen Liu Yanping Liu School of Physics and Electronics Hunan Key Laboratory for Super-microstructure and Ultrafast ProcessCentral South UniversityChangsha 410083China State key laboratory of High-Performance Complex Manufacturing Central South UniversityChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia Shenzhen Research Institute of Central South University Shenzhen 518057China

Vertically stacked transition metal dichalcogenide(TMD)heterostructures provide an opportunity to explore optoelectronic properties within the two-dimensional *** such structures,spatially indirect interlayer excitons(IXs)can be generated in adjacent layers because of strong Coulomb ***,due to the complexity of the multilayered heterostructure(HS),the capture and study of the IXs in trilayer type-Ⅱ HSs have so far remained ***,we present the observation of the IXs in trilayer type-Ⅱ staggered band alignment of MoS_(2)/MoSe_(2)/WSe_(2) van der Waals(vdW)HSs by photoluminescence(PL)*** central energy of IX is 1.33 eV,and the energy difference between the extracted double peaks is 23 *** confirmed the origin of IX through PL properties and calculations by the density functional theory,we also studied the dependence of the IX emission peak on laser power and ***,the polarization-resolved PL spectra of HS were also investigated,and the maximum polarizability of the emission peak of WSe_(2) reached 11.40%at 6 *** findings offer opportunities for the study of new physical properties of excitons in TMD HSs and therefore are valuable for exploring the potential applications of TMDs in optoelectronic devices.

关键词： transition metal dichalcogenides interlayer exciton type-II band alignment trilayer heterostructure

An Integrated Carbon Dioxide Capture and Methanation process

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CCS Chemistry 2024年第5期6卷 1174-1183页

作者： Xiaochen Zhang Mengzhu Li Xingwu Liu Ang Li Yuchen Deng Mi Peng Yu Zhang Charlotte Vogt Matteo Monai Junxian Gao Xuetao Qin Yao Xu Qiaolin Yu Meng Wang Guofu Wang Zheng Jiang Xiaodong Han Casper Brady Wei-Xue Li Wu Zhou Jin-Xun Liu Bingjun Xu Bert M.Weckhuysen Ding Ma Beijing National laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 China Academy of Aerospace Science and Innovation Beijing 100088 National Energy Center for Coal to Liquids Synfuels China Co.Ltd.Beijing 101400 Beijing key laboratory of microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing Inorganic Chemistry and Catalysis group Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht University3584 CG Utrecht State key laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001 Shanghai Synchrotron Radiation Facility Zhangjiang LadShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210 Center for Catalytic Science and Technology University of DelawareNewarkDelaware 19716 key laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026 Hefei National laboratory University of Science and Technology of ChinaHefei 230088 School of Physical Sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing 100049

Reducing the ever-growing level of CO_(2)in the atmosphere is critical for the sustainable development of human society in the context of global *** of the capture and upgrading of CO_(2)is,therefore,highly desirable since each process step is costly,both energetically and ***,we report a CO_(2)direct air capture(DAC)and fixation process that produces *** concentrations of CO_(2)(∼400 ppm)in the air are captured by an aqueous solution of sodium hydroxide to form *** carbonate is subsequently hydrogenated to methane,which is easily separated from the reaction system,catalyzed by TiO2-supported Ru in the aqueous phase with a selectivity of 99.9%among gas-phase *** concurrent regenerated hydroxide,in turn,increases the alkalinity of the aqueous solution for further CO_(2)capture,thereby enabling this one-ofits-kind continuous CO_(2)capture and methanation *** simulations demonstrate the energy feasibility of this CO_(2)DAC and methanation process,highlighting its promise for potential largescale applications.

关键词： CO_(2)capture and methanation process sodium hydroxide carbonate Ru/TiO_(2) catalytic mechanism CO_(2)activation and hydrogenation

Ion migration in perovskite solar cells

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Journal of Semiconductors 2021年第1期42卷 1-4页

作者： Xiaoxue Ren Lixiu Zhang Yongbo Yuan Liming Ding hunan key laboratory of super microstructure and ultrafast process School of Physics and ElectronicsCentral South UniversityChangsha 410083China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

The past few years have witnessed a remarkable progress of perovskite solar cells(PSCs),which can be attributed to the high light absorption coefficient,tunable bandgap,long carrier diffusion length,solution processab... 详细信息

关键词： materials. perovskite attributed

Preparation of single atom catalysts for high sensitive gas sensing

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International Journal of Extreme Manufacturing 2024年第3期6卷 216-248页

作者： Xinxin He Ping Guo Xuyang An Yuyang Li Jiatai Chen Xingyu Zhang Lifeng Wang Mingjin Dai Chaoliang Tan Jia Zhang key laboratory of Microsystems and microstructure Manufacturing Ministry of EducationHarbin Institute of TechnologyHarbin 150080People’s Republic of China Institute for Frontier Materials Deakin UniversityWaurn Ponds CampusLocked Bag 20000Victoria 3220Australia School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Department of Electrical and Electronic Engineering The University of Hong KongPokfulam RoadHong Kong Special Administrative Region of China 999077People’s Republic of China Chongqing Research Institute Harbin Institute of TechnologyChongqing 401120People’s Republic of China

Single atom catalysts(SACs)have garnered significant attention in the field of catalysis over the past decade due to their exceptional atom utilization efficiency and distinct physical and chemical *** the semiconductor-based electrical gas sensor,the core is the catalysis process of target gas molecules on the sensitive *** this context,the SACs offer great potential for highly sensitive and selective gas sensing,however,only some of the bubbles come to the *** facilitate practical applications,we present a comprehensive review of the preparation strategies for SACs,with a focus on overcoming the challenges of aggregation and low *** research efforts have been devoted to investigating the gas sensing mechanism,exploring sensitive materials,optimizing device structures,and refining signal post-processing ***,the challenges and future perspectives on the SACs based gas sensing are presented.

关键词： single atom catalysts preparation sensing mechanism gas sensing

super WOMAN 2(SPW2)maintains organ identity in spikelets by inhibiting the expression of floral homeotic genes OsMADS3,OsMADS58,OsMADS13,and DROOPING LEAF

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Journal of Integrative Agriculture 2024年第1期23卷 59-76页

作者： Hui Zhuang Jinsong Lan Qiuni Yang Xiaoyu Zhao Yuhuan Li Jingya Zhi Yalin Shen GuanghuaHe Yunfeng Li Rice Research Institute Key Laboratory of Application and Safety Control of Genetically Modified CropsAcademy of Agricultural SciencesSouthwest UniversityChongqing 400715China

Flower organ identity in rice is mainly determined by the A-,B-,C-and E-class genes,with the majority encoding MADS-box transcription ***,few studies have investigated how the expression of these floral organ identity genes is regulated during flower *** this study,we identified a gene named super WOMAN 2(SPW2),which is necessary for spikelet/floret development in rice by participating in the regulation of the expression of pistil identity genes such as OsMADS3,OsMADS13,OsMADS58 and *** the spw2 mutant,ectopic stigma/ovary-like tissues were observed in the non-pistil organs,including sterile lemma,lemma,palea,lodicule,and stamen,suggesting that the identities of these organs were severely affected by mutations in ***2 was shown to encode a plant-specific EMF1-like protein that is involved in H3K27me3 modification as an important component of the PRC2 *** analysis showed that the SPW2 mutation led to the ectopic expression of OsMADS3,OsMADS13,OsMADS58,and DL in non-pistil organs of the *** ChIP-qPCR results showed significant reductions in the levels of H3K27me3 modification on the chromatin of these ***,we demonstrated that SPW2 can mediate the process of H3K27me3 modification of pistil-related genes to regulate their expression in non-pistil organs of spikelets in *** results of this study expand our understanding of the molecular mechanism by which SPW2 regulates floral organ identity genes through epigenetic regulation.

关键词： rice(Oryza sativa) spikelet organ identity H3K27me3

SiO2 nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

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Chinese Physics B 2020年第7期29卷 576-582页

作者： Zerong Liang Bingchu Yang Anyi Mei Siyuan Lin Hongwei Han Yongbo Yuan Haipeng Xie Yongli Gao Conghua Zhou hunan key laboratory of super-microstructure and ultrafast process School of Physics and ElectronicsCentral South UniversityChangsha 410083China Michael Grä tzel Center for Mesoscopic Solar CellsWuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Department of Physics and Astronomy University of RochesterRochesterNY 14627USA

SiO2 nanoparticles were used to regulate the crystallizing process of lead halide perovskite films prepared by the sequential deposition method,which was used in the low-temperature-processed,carbon-electrode-basing,hole-conductor-free planar perovskite solar *** was observed that,after adding small amount of SiO2 precursor(1 vol%)into the lead iodide solution,performance parameters of open-circuit voltage,short-circuit current and fill factor were all upgraded,which helped to increase the power conversion efficiency(reverse scan)from 11.44(±1.83)%(optimized at 12.42%)to 14.01(±2.14)%(optimized at 15.28%,AM 1.5G,100 mW/cm^2).Transient photocurrent decay curve measurements showed that,after the incorporation of SiO2 nanoparticles,charge extraction was accelerated,while transient photovoltage decay and dark current curve tests both showed that recombination was *** improvement is due to the improved crystallinity of the perovskite film.X-ray diffraction and scanning electron microscopy studies observed that,with incorporation of amorphous SiO2 nanoparticles,smaller crystallites were obtained in lead iodide films,while larger crystallites were achieved in the final perovskite *** study implies that amorphous SiO2 nanoparticles could regulate the coarsening process of the perovskite film,which provides an effective method in obtaining high quality perovskite film.

关键词： perovskite solar cell carbon-electrode crystallization low temperature SiO2 lead iodide

A cascade of in situ conversion of bicarbonate to CO_(2) and CO_(2) electroreduction in a flow cell with a Ni-N-S catalyst

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Journal of Energy Chemistry 2024年第1期88卷 183-193,I0005页

作者： Linghui Kong Min Wang Yongxiao Tuo Shanshan Zhou Jinxiu Wang Guangbo Liu Xuejing Cui Jiali Wang Luhua Jiang Nanomaterials and Electrocatalysis laboratory College of Materials Science and EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina State key laboratory of Heavy Oil processing College of New EnergyChina University of Petroleum(East China)Qingdao 266580ShandongChina

Combination of CO_(2) capture using inorganic alkali with subsequently electrochemical conversion of the resultant HCO_(3)^(-)to high-value chemicals is a promising route of low cost and high *** electrochemical reduction of HCO_(3)^(-)is challenging due to the inaccessible of negatively charged molecular groups to the electrode ***,we adopt a comprehensive strategy to tackle this challenge,i.e.,cascade of in situ chemical conversion of HCO_(3)^(-)to CO_(2) and CO_(2) electrochemical reduction in a flow *** a tailored Ni-N-S single atom catalyst(SACs),where sulfur(S)atoms located in the second shell of Ni center,the CO_(2)electroreduction(CO_(2)ER)to CO is *** experimental results and density functional theory(DFT)calculations reveal that the introduction of S increases the p electron density of N atoms near Ni atom,thereby stabilizing^(*)H over N and boosting the first proton coupled electron transfer process of CO_(2)ER,i.e.,^(*)+e^(-)+^(*)H+^(*)CO_(2)→^(*)*** a result,the obtained catalyst exhibits a high faradaic efficiency(FE_(CO)~98%)and a low overpotential of 425 mV for CO production as well as a superior turnover frequency(TOF)of 47397 h^(-1),outcompeting most of the reported Ni *** importantly,an extremely high FECOof 90%is achieved at 50 mA cm^(-2)in the designed membrane electrode assembly(MEA)cascade electrolyzer fed with liquid *** work not only highlights the significant role of the second coordination on the first coordination shell of the central metal for CO_(2)ER,but also provides an alternative and feasible strategy to realize the electrochemical conversion of HCO_(3)^(-)to high-value chemicals.

关键词： S doped Ni-N-C single atom catalysts CO_(2)electrochemical reduction DFT calculations Membrane electrode assembly Reduction of bicarbonate

Random Copolymers Based on Thieno[3,4-c]pyrrole-4,6-dione and Isoindigo Building Blocks for Polymer Solar Cells

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Chinese Journal of Chemistry 2014年第6期32卷 521-526页

作者： Ping Deng Jian Xiong Shugang Li Yibing Wu Junliang Yang Qing Zhang School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Institute of super microstructure and ultrafast process in Advanced Materials School of Physics and ElectronicsCentral South UniversityChangshaHunan 410083China

Three random conjugated polymers,RP-TiI,RP-2TiI and RP-TVTiI based on both thieno[3,4-c]pyrrole-4,6-dione and isoindigo units have been synthesized by Stille cross-coupling *** optical and electrochemical properties of new polymers have been *** resulted polymers showed broad absorption spectra and appropriate energy levels for polymer solar cell *** bulk heterojunction devices based on the blend of the polymer RP-TiI and PC_(61)BM showed a power conversion efficiency of 1.75%.

关键词： thieno[3,4-c]pyrrole-4 6-dione isoindigo random copolymers polymer solar cells