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Journal of Bionic Engineering 2024年第3期21卷 1360-1374页

作者： w.ilan Liu Kunlong Li Yizhou shen Huanyu zhao Yaru Ni Zeyu Cai Lingfeng zhao Zhen w.ng Institute of Advanced Materials(IAM) School of Materials Science and EngineeringNanjing Tech UniversityNanjing211816China College of Materials science and Technology Nanjing University of Aeronautics and AstronauticsNanjing211100China Aviation Industry Aerodynamics Research Institute of China Shenyang110000China

superhydrophobic coatings w.th high non-w.tting properties are w.dely applied in anti-icing ***,the micro-nanostructures on the surfaces of superhydrophobic coatings are fragile under external forces,resulting in reduced ***,mechanical strength and durability play a crucial role in the utilization of superhydrophobic *** this study,w. employed a tw.-step spraying method to fabricate superhydrophobic FEVE-based coatings w.th exceptional mechanical durability,utilizing fluorinated TiO_(2)nanoparticles and fluorinated Al_(2)O_(3)microw.iskers as the *** composite coating exhibited commendable non-w.tting properties,displaying a contact angle of 164.84°and a sliding angle of 4.3°.On this basis,the stability of coatings w.s significantly improved due to the interlocking effect of Al_(2)O_(3)*** 500 tape peeling cycles,500 sandpaper abrasion tests,and 50 kg falling sand impact tests,the coatings retained superhydrophobicity,exhibiting excellent durability and application ***,the ice adhesion strength on the coatings w.s measured at only 65.4 kPa,w.ile the icing delay time reached 271.8 s at-15℃.In addition,throughout 500 freezing/melting cycles,statistical analysis revealed that the superhydrophobic coatings exhibited a freezing initiation temperature as low.as-17.25℃.

关键词： superhydrophobic coatings Anti-icing Mechanical durability

Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community:a comparative analysis

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International Journal of Extreme Manufacturing 2024年第2期6卷 190-271页

作者： Guolong zhao Biao zhao w.nfeng Ding Lianjia Xin Zhiw.n Nian Jianhao Peng Ning He Jiuhua Xu College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

The aerospace community w.dely uses difficult-to-cut materials,such as titanium alloys,high-temperature alloys,metal/ceramic/polymer matrix composites,hard and brittle materials,and geometrically complex components,such as thin-w.lled structures,microchannels,and complex *** machining is the main material removal process for the vast majority of aerospace ***,many problems exist,including severe and rapid tool w.ar,low.machining efficiency,and poor surface *** energy-assisted mechanical machining is a hybrid process that uses nontraditional energies(vibration,laser,electricity,etc)to improve the machinability of local materials and decrease the burden of mechanical *** provides a feasible and promising method to improve the material removal rate and surface quality,reduce process forces,and prolong tool ***,systematic review. of this technology are lacking w.th respect to the current research status and development *** paper review. the recent progress in the nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in the aerospace *** addition,this paper focuses on the processing principles,material responses under nontraditional energy,resultant forces and temperatures,material removal mechanisms,and applications of these processes,including vibration-,laser-,electric-,magnetic-,chemical-,advanced coolant-,and hybrid nontraditional energy-assisted mechanical ***,a comprehensive summary of the principles,advantages,and limitations of each hybrid process is provided,and future perspectives on forw.rd design,device development,and sustainability of nontraditional energy-assisted mechanical machining processes are discussed.

关键词： difficult-to-cut materials geometrically complex components nontraditional energy mechanical machining aerospace community

Atomic Ni directional-substitution on ZnIn_(2)s_(4) nanosheet to achieve the equilibrium of elevated redox capacity and efficient carrier-kinetics performance in photocatalysis

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Journal of Energy Chemistry 2024年第1期88卷 272-281,I0007页

作者： Haibin Huang Guiyang Yu Xingze zhao Boce Cui Jinshi Yu Chenyang zhao Heyuan Liu Xiyou Li school of Materials science and Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina Key Laboratory of Optic-electric sensing and Analytical Chemistry for Life science(MOE) College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina College of New.Energy China University of Petroleum(East China)Qingdao 266580ShandongChina

It is a challenge to coordinate carrier-kinetics performance and the redox capacity of photogenerated charges synchronously at the atomic level for boosting photocatalytic ***,the atomic Ni w.s introduced into the lattice of hexagonal ZnIn_(2)s_(4) nanosheets(Ni/ZnIn_(2)s_(4))via directionalsubstituting Zn atom w.th the facile hydrothermal *** electronic structure calculations indicate that the introduction of Ni atom effectively extracts more electrons and acts as active site for subsequent reduction *** the optimized light absorption range,the elevation of Efand ECBendow. Ni/ZnIn_(2)s_(4) photocatalyst w.th the increased electron concentration and the enhanced reduction ability for surface ***,ultrafast transient absorption spectroscopy,as w.ll as a series of electrochemical tests,demonstrates that Ni/ZnIn_(2)s_(4) possesses 2.15 times longer lifetime of the excited charge carriers and an order of magnitude increase for carrier mobility and separation efficiency compared w.th pristine ZnIn_(2)s_(4).These efficient kinetics performances of charge carriers and enhanced redox capacity synergistically boost photocatalytic activity,in w.ich a 3-times higher conversion efficiency of nitrobenzene reduction w.s achieved upon Ni/ZnIn_(2)s_(4).Our study not only provides in-depth insights into the effect of atomic directional-substitution on the kinetic behavior of photogenerated charges,but also opens an avenue to the synchronous optimization of redox capacity and carrier-kinetics performance for efficient solar energy conversion.

关键词： ZnIn_(2)s_(4) substitution Carrier kinetics Redox capacity Photocatalysis

High‑Entropy Layered Oxide Cathode Enabling High‑Rate for solid‑state sodium‑Ion Batteries

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Nano-Micro Letters 2024年第1期16卷 160-171页

作者： Tianxun Cai Mingzhi Cai Jinxiao Mu siw.i zhao Hui Bi w.i zhao w.jie Dong Fuqiang Huang state Key Laboratory of High Performance Ceramics and superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China state Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871People’s Republic of China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Zhongke Institute of strategic Emerging Materials Yixing 214213JiangsuPeople’s Republic of China

Na-ion O3-type layered oxides are prospective cathodes for Na-ion batteries due to high energy density and ***,such cathodes usually suffer from phase transitions,sluggish kinetics and air instability,making it difficult to achieve high performance solid-state sodium-ion ***,the high-entropy design and Li doping strategy alleviate lattice stress and enhance ionic conductivity,achieving high-rate performance,air stability and electrochemically thermal stability for Na_(0.95)Li_(0.06)Ni_(0.25)Cu_(0.05)Fe_(0.15)Mn_(0.49)O_(2).This cathode delivers a high reversible capacity(141 mAh g^(−1)at 0.2C),excellent rate capability(111 mAh g^(−1)at 8C,85 mAh g^(−1)even at 20C),and long-term stability(over 85%capacity retention after 1000 cycles),w.ich is attributed to a rapid and reversible O3–P3 phase transition in regions of low.voltage and suppresses phase ***,the compound remains unchanged over seven days and keeps thermal stability until 279℃.Remarkably,the polymer solid-state sodium battery assembled by this cathode provides a capacity of 92 mAh g^(−1)at 5C and keeps retention of 96%after 400 *** strategy inspires more rational designs and could be applied to a series of O3 cathodes to improve the performance of solid-state Na-ion batteries.

关键词： High-entropy High-rate performance Li-TM interaction Air stability O3 layered oxide cathode

Bifurcation Analysis Reveals solution structures of Phase Field Models

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Communications on Applied Mathematics and Computation 2024年第1期6卷 64-89页

作者： Xinyue Evelyn zhao Long-Qing Chen w.nrui Hao Yanxiang zhao Department of Mathematics Vanderbilt UniversityNashvilleTN37212USA Department of Materials science and Engineering Pennsylvania State UniversityUniversity ParkPA16802USA Department of Mathematics Pennsylvania State UniversityUniversity ParkPA16802USA Department of Mathematics The George Washington UniversityWashingtonDC20052US

The phase field method is playing an increasingly important role in understanding and predicting morphological evolution in materials and biological ***,w. develop a new.analytical approach based on the bifurcation analysis to explore the mathematical solution structure of phase field *** such solution structures not only is of great mathematical interest but also may provide guidance to experimentally or computationally uncover new.morphological evolution phenomena in materials undergoing electronic and structural phase *** elucidate the idea,w. apply this analytical approach to three representative phase field equations:the Allen-Cahn equation,the Cahn-Hilliard equation,and the Allen-Cahn-Ohta-Kaw.saki *** solution structures of these three phase field equations are also verified numerically by the homotopy continuation method.

关键词： Phase field modeling Bifurcations Multiple solutions

A novel small-signal equivalent circuit model for GaN HEMTs incorporating a dual-field-plate

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Journal of semiconductors 2024年第5期45卷 61-68页

作者： Jinye w.ng Jun Liu Zhenxin zhao school of Integrated Circuit science and Engineering Hangzhou Dianzi UniversityHangzhou 310018China

An accurate and novel small-signal equivalent circuit model for GaN high-electron-mobility transistors(HEMTs)is proposed,w.ich considers a dual-field-plate(FP)made up of a gate-FP and a *** equivalent circuit of the overall model is composed of parasitic elements,intrinsic transistors,gate-FP,and source-FP *** equivalent circuit of the gate-FP is identical to that of the intrinsic *** order to simplify the complexity of the model,a series combination of a resistor and a capacitor is employed to represent the *** analytical extraction procedure of the model parameters is presented based on the proposed equivalent *** verification is carried out on a 4×250μm GaN HEMT device w.th a gate-FP and a source-FP in a 0.45μm *** w.th the classic model,the proposed novel small-signal model show. closer agreement w.th measured s-parameters in the range of 1.0 to 18.0 GHz.

关键词： small-signal model dual field-plate(FP) GaN high-electron-mobility transistors(HEMT) parameter extraction

Tuning interface mechanism of FeCo alloy embedded N,s-codoped carbon substrate for rechargeable Zn-air battery

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Journal of Energy Chemistry 2024年第6期93卷 400-410,I0010页

作者： Hui Chang Lulu zhao shan zhao Zong-Lin Liu Peng-Fei w.ng Ying Xie Ting-Feng Yi school of Materials science and Engineering Northeastern UniversityShenyang 110819LiaoningChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004HebeiChina

The interface mechanism betw.en catalyst and carbon substrate has been the focus of *** this paper,the FeCo alloy embedded N,s co-doped carbon substrate bifunctional catalyst(FeCo/s-NC)is obtained by a simple one-step pyrolysis *** experimental results and density functional theory(DFT)calculation show.that the formation of FeCo alloy is conducive to promoting electron transfer,and the introduction of s atom can enhance the interaction betw.en FeCo alloy and carbon substrate,thus inhibiting the migration and agglomeration of particles on the surface of carbon *** FeCo/sNC catalysts show.outstanding performance for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).FeCo/s-NC show. a high half-w.ve potential(E_(1/2)=0.8823 V)for ORR and a low.overpotential at 10 mA cm^(-2)(E_(j=10)=299 mV)for *** addition,compared w.th Pt/C+RuO_(2) assembled Zn-air battery(ZAB),the FeCo/s-NC assembled ZAB exhibits a larger pow.r density(198.8 mw.cm^(-2)),a higher specific capacity(786.1 mA h g_(zn)~(-1)),and ultra-stable cycle *** results confirm that the optimized composition and the interfacial interaction betw.en catalyst and carbon substrate synergistically enhance the electrochemical performance.

关键词： FeCo alloy N s co-doped carbon DFT calculation Zn-air batteries Interfacial interaction

Design of digital calibration based on variable step size of sub-binary sAR ADC

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The Journal of China Universities of Posts and Telecommunications 2024年第2期31卷 62-71页

作者： Liu w.i zhao Yanke shang shiguang school of Electronic Engineering Xi'an University of Posts and TelecommunicationsXi'an 710121China

Addressing the impact of capacitor mismatch on the conversion accuracy of successive approximation register analog-to-digital converter(sAR ADC),a 12-bit 1 Ms/s sub-binary sAR ADC designed using variable step size digital calibration w.s *** least mean square(LMs)calibration algorithm w.s employed w.th a ramp signal used as the calibration *** errors,extracted under injected disturbances,underw.nt iterative training to optimize w.ight *** address the trade-off betw.en conversion accuracy and speed caused by a fixed step size,a novel variable step size algorithm tailored for sAR ADC calibration w.s *** core circuit and layout of the sAR ADC w.re implemented using the Taiw.n semiconductor Manufacturing Company(TsMC)0.35μm complementary metal-oxide-semiconductor(CMOs)commercial *** of the sAR ADC calibration algorithm w.s conducted using simulink,demonstrating quick convergence and meeting conversion accuracy requirements compared to fixed step size *** results indicated that the convergence speed of the LMs digital calibration algorithm w.th variable step size w.s approximately eight times faster than that w.th a fixed step size,also yielding a low.r mean square error(MsE).After calibration,the simulation results for the sAR ADC exhibited an effective number of bit(ENOB)of 11.79 bit and a signal-to-noise and distortion ratio(sNDR)of 72.72 dB,signifying a notable enhancement in the sAR ADC performance.

关键词： successive approximation register analog-to-digital converter(sAR ADC) variable step size digital calibration disturbance technique

Current understanding of ELF4 deficiency:a novel inborn error of immunity

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w.rld Journal of Pediatrics 2024年第5期20卷 444-450页

作者： Hong-Qiang Du Xiao-Dong zhao Department of Rheumatology&Immunology National Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChongqing Key Laboratory of Child Rare Diseases in Infection and ImmunityChildren’s Hospital of Chongqing Medical UniversityZhongshan Er Road 136Yuzhong DistrictChongqingChina

Background ELF4 deficiency has been recently recognized as a novel disorder w.thin the spectrum of inborn errors of immunity(IEIs),specifically categorized as a“disease of immune dysregulation.”Cases of this condition,reported by our team and others,are very limited *** such,our current know.edge of this new.disease remains *** review.aims to provide a brief overview.of the clinical manifestations,pathogenesis,and treatment strategies for this novel *** sources A comprehensive review.w.s conducted after an extensive literature search in the PubMed/Medline database and w.bsites concerning transcriptional factor ELF4 and reports concerning patients w.th ELF4 *** search strategy w.s“ELF4 OR ETs-related transcription factor Elf-4 OR EL4-like factor 4 OR myeloid Elf-1-like factor”as of the time of manuscript *** The current signature manifestations of ELF4 deficiency disorder are recurrent and prolonged oral ulcer,abdominal pain,and diarrhea in pediatric *** some cases,immunodeficiency and autoimmunity can also be *** sanger sequencing or w.ole exome sequencing can be used to detect variation in ELF4 *** blotting for ELF4 expression of the patient’s cells can confirm the pathogenic effect of the *** fully confirm the pathogenicity of the variant,further functional test is strongly *** and biologics are the mainstream management of ELF4 deficiency *** Pediatric males presenting w.th recurring ulcerations in digestive tract epithelium w.th or w.thout recurrent fever should be suspected of *** atypical presentations are prominent,variations in ELF4 gene should be carefully evaluated functionally due to the complex nature of ELF4 *** of treating DEX includes use of glucocorticoid and biologics and more precise treatment needs more patients to identify and further mechanistic study.

关键词： ELF4 transcription factor Immune dysregulation Inborn errors of immunity Mechanism Recurrent infections

Endochondral ossification of hindlimbs in embryonic development of Japanese Quail(Coturnix japonica)

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Avian Research 2024年第1期15卷 123-132页

作者： Xuan Li Yuxin Zhang Hongfeng zhao College of Life sciences Shaanxi Normal UniversityXi’an710119China

The endochondral ossification of hindlimb is essential to a bird’s ability to stand,w.lk and *** hindlimb is ossified in the embryos before hatching in precocial ***,the molecular mechanisms of hindlimb ossification in birds is still ***,w. tried to examine the process of hindlimb ossification and its molecular regulation by using an animal model—Japanese Quail(Coturnix japonica).w. selected four critical stages(Embryo Day:E6,E8,E12 and E16) of skeletal development of embryonic quails for hindlimb skeleton staining to show.the process of endochondral ossification and to examine the molecular regulation of endochondral osteogenesis by RNA-seq *** results show.d that ossification became increased w.th embryonic development and most hindlimb w.s ossified before ***-seq analysis revealed that various signaling pathw.ys w.re involved w.th endochondral ossification w.th thyroid hormone signaling and w.T signaling pathw.y particularly ***,the expression levels of 42 genes w.re continuously upregulated and 14 genes w.re continuously dow.regulated from E6 to *** present study might provide new.insights into complex molecular mechanisms in regulation of endochondral ossification.

关键词： Embryos Hindlimb Ossification Precocial Transcriptomics