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Large-area growth of synaptic heterostructure arrays for integrated neuromorphic visual perception chips

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Chip 2024年第2期3卷 88-95页

作者： Yao Deng shenghong Liu manshi Li Na Zhang Yiming Feng Junbo Han yury Kapitonov Yuan Li Tianyou Zhai state Key Laboratory of materials Processing and Die&mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Wuhan National High magnetic Field Centre Department of PhysicsHuazhong University of Science and TechnologyWuhan 430074China Department of Radiology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Photonics Saint Petersburg State UniversitySaint Petersburg 199034Russia shenzhen Huazhong University of science and Technology Research Institute Shenzhen 518057China

Two-dimensional metal chalcogenides have garnered significant attention as promising candidates for novel neuromorphic synaptic devices due to their exceptional structural and optoelectronic ***,achieving large-scale integration and practical applications of synaptic chips has proven to be challenging due to significant hurdles in materials preparation and the absence of effective nanofabrication *** a recent breakthrough,we introduced a revolutionary allopatric defect-modulated Fe_(7)s_(8)@mos_(2)synaptic heterostructure,which demonstrated remarkable optoelectronic synaptic response *** upon this achievement,our current study takes a step further by presenting a sulfurization-seeding synergetic growth strategy,enabling the large-scale and arrayed preparation of Fe_(7)s_(8)@mos_(2)***,a three-dimensional vertical integration technique was developed for the fabrication of arrayed optoelectronic synaptic ***,we have successfully simulated the visual persistence function of the human eye with the adoption of the arrayed *** synaptic devices exhibit a remarkable ability to replicate the preprocessing functions of the human visual system,resulting in significantly improved noise reduction and image recognition *** study might mark an important milestone in advancing the field of optoelectronic synaptic devices,which significantly prompts the development of mature integrated visual perception chips.

关键词： Two-dimensional(2D) metal chalcogenides Heterostructures Optoelectronic synapse Artificial vision

Capacitance,charge dynamics,and electrolyte-surface interactions in functionalized carbide-derived carbon electrodes

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Progress in Natural science:materials International 2015年第6期25卷 631-641页

作者： Boris Dyatkin Eugene mamontov Kevin m.Cook yury Gogotsi Department of materials science & Engineering and A.J.Drexel Nanomaterials Institute Drexel University spallation Neutron source Oak Ridge National Laboratory materials Engineering Division Naval Air Systems Command

This study analyzed the dynamics of ionic liquid electrolyte inside of defunctionalized,hydrogenated,and aminated pores of carbide-derived carbon supercapacitor *** approach tailors surface functionalities and tunes nanoporous structures to decouple the influence of pore wall composition on capacitance,ionic resistance,and long-term ***-elastic neutron scattering probes the self-diffusion properties and electrode-ion interactions of electrolyte molecules confined in functionalized ***-temperature ionic liquid interactions in confined pores are strongest when the hydrogen-containing groups are present on the *** property translates into higher capacitance and greater ion transport through pores during electrochemical *** hydrogenated pores,aminated pores do not favorably interact with ionic liquid ions and,subsequently,are outperformed by defunctionalized surfaces.

关键词： supercapacitor Carbide-derived carbon Neutron scattering Energy storage Porous materials surface chemistry

Degenerations of Jordan Algebras and“marginal”Algebras

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Algebra Colloquium 2021年第2期28卷 281-294页

作者： Ilya Gorshkov Ivan Kaygorodov yury Popov sobolev Institute of mathematics NovosibirskRussia Universidade Federal do ABC CMCCSanto AndreBrazil Universidade Estadual de Campinas CampinasBrazil

We describe all degenerations of the variety ■3 of Jordan algebras of dimension three over *** particular,we describe all irreducible components in ■*** every n we define an n-dimensional rigid“marginal”Jordan algebra of level ***,we discuss marginal algebras in associative,alternative,left alternative,non-commutative Jordan,Leibniz and anticommutative cases.

关键词： Jordan algebra degeneration rigid algebra irreducible component marginal algebra

Differences in migration phenology of warblers at two stopover sites in eastern Russia suggest a longitudinal migration pattern

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Avian Research 2023年第1期14卷 7-12页

作者： LászlóBozó yury Anisimov Wieland Heim Eötvös Loránd University Department of Systematic Zoology and Ecology1117BudapestPáazmány Péter sétány1/CHungary Baikalsky state Nature Biosphere Reserve TankhoyRussia Turku University Department of BiologyFI-20014TurkuFinland münster University Institute of Landscape EcologyMünsterGermany

Long-distance migratory birds often face major geographical barriers on their *** some species are able to cross them,others use longer routes to avoid such *** is known about the strategies of siberian landbird migrants,which either cross or circumvent the deserts and mountain ranges of Central Asia en route to their non-breeding sites in southeast *** we compare data on migration phenology and morphology from two bird ringing stations in eastern Russia,situated at similar latitudes but with a longitudinal difference of 1500 km,to hypothesise migration *** found significant differences in timing between the two sites(birds migrated significantly earlier in spring and significantly later in autumn in the east),suggesting longitudinal migration as a result of migration ***,morphological differences show a less clear *** argue that most siberian landbirds might opt for a detour through the Russian Far East instead of a direct route in order to avoid unfavourable stop-over habitat in Central ***,tracking studies will be necessary to prove this.

关键词： East Asian flyway Barrier Detour migration Passerine Phylloscopus

Two-dimensional mXenes and their applications

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Frontiers of physics 2023年第1期18卷 1-5页

作者： Guangcun shan Zejian Ding yury Gogotsi school of Instrumentation science and Opto-electronics Engineering Beihang UniversityBeijing 100091China Institute of Experimental Physics Saarland University66123 SaarbrückenGermany A.J.Drexel Nanomaterials Institute and Department of Materials Science and EngineeringDrexel UniversityPhiladelphiaPA 19104USA

Two-dimensional(2D)transition metal carbides,nitrides or carbonitrides(mXene)have attracted tremendous attention as a potentially the largest family of inorganic *** have a general formula mn+1XnTx,where m is an early transition metal(2 or more can be present in a random mix or a specific order),X is C and/or N elements(oxygen can partially substitute),and T_(x)(x is variable)represent surface terminations,which can include reactive end groups(such as–OH and=O),halogens and chalcogens,and n can vary from 1 to 4(fractions are possible).All mXenes can either be produced as multilayer particles(ml-mXene)or delaminated(d-mXene)single-layer flakes.

关键词： materials. carbonitride dimensional

Recent advances and perspectives in next generation sequencing application to the genetic research of type 2 diabetes

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World Journal of Diabetes 2019年第7期10卷 376-395页

作者： Yulia A Nasykhova yury A Barbitoff Elena A serebryakova Dmitry s Katserov Andrey s Glotov Laboratory of Biobanking and Genomic medicine of Institute of Translation Biomedicine St.Petersburg State UniversitySt.Petersburg 199034Russia Department of Genomic medicine D.O.Ott Research Institute of ObstetricsGynaecology and ReproductologySt.Petersburg 199034Russia Bioinformatics Institute St.Petersburg 194021Russia Department of Genetics and Biotechnology St.Petersburg State UniversitySt.Petersburg 199034Russia Department of Genetics City Hospital No.40St.Petersburg 197706Russia Institute of Living systems Immanuel Kant Baltic Federal UniversityKaliningrad 236016Russia

Type 2 diabetes(T2D)mellitus is a common complex disease that currently affects more than 400 million people worldwide and has become a global health ***-throughput sequencing technologies such as whole-genome and whole-exome sequencing approaches have provided numerous new insights into the molecular bases of *** advances in the application of sequencing technologies to T2D research include,but are not limited to:(1)Fine mapping of causal rare and common genetic variants;(2)Identification of confident genelevel associations;(3)Identification of novel candidate genes by specific scoring approaches;(4)Interrogation of disease-relevant genes and pathways by transcriptional profiling and epigenome mapping techniques;and(5)Investigation of microbial community alterations in patients with *** this work we review these advances in application of next-generation sequencing methods for elucidation of T2D pathogenesis,as well as progress and challenges in implementation of this new knowledge about T2D genetics in diagnosis,prevention,and treatment of the disease.

关键词： Type 2 diabetes Next-generation sequencing Epigenetics Genome-wide association study microbiome

On properties of the deterministic turbulence and reproducibility of its instantaneous and statistical characteristics

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Theoretical & Applied mechanics Letters 2014年第6期4卷 1-19页

作者： Vladimir I.Borodulin yury s.Kachanov Khristianovich Institute of Theoretical and Applied mechanics of the Russian Academy of sciences

As known from previous studies, is a post-transitional flow that is turbulent the deterministic turbulence （DeTu） according to the generally accepted statistical characteristics but possesses, meanwhile, a significant degree of determinism, i.e., reproducibility of its instantaneous structure. It is found that the DeTu can occur in those cases when transition is caused by convective instabilities; in boundary layers, in particular. The present paper is devoted to a brief description of history of discovering the DeTu phenomenon, as well as to some recent advance in investigation of instantaneous and statistical properties of such turbulent boundary layer flows.

关键词： boundary layer laminar-turbulent transition deterministic wall turbulence instantaneous characteristics statistical characteristics reproducibility

Preventive effect of a pectic polysaccharide of the common cranberry Vaccinium oxycoccos L. on acetic acid-induced colitis in mice

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World Journal of Gastroenterology 2006年第41期12卷 6646-6651页

作者： sergey V Popov Pavel A markov Ida R Nikitina sergey Petrishev Vasily smirnov yury s Ovodov Department of molecular Immunology and Biotechnology Institute of PhysiologyKomi Science CentreThe Urals Branch of the Russian Academy of Sciences50 Pervomaiskaya str.Syktyvkar 167982Russia

AIm： To study isolation and chemical characterization of pectin derived from the common cranberry Vaccin/um oxycoccos L. （oxycoccusan OP） and the testing of its preventive effect on experimental colitis. mETHODs： mice were administrated orally with OP two days prior to a rectal injection of 5% acetic acid and examined for colonic damage 24 h later. Colonic inflammation was characterized by macroscopical injury and enhanced levels of myeloperoxidase activity measured spectrophotometrically with o-phenylene diamine as the substrate. The mucus contents of the colon were determined by the Alcian blue dye binding method. Vascular permeability was estimated using 4% Evans blue passage after i.p. injection of 0.05 mol/L acetic acid. REsULTs： In the mice treated with OP, colonic macroscopic scores （1.1 ± 0.4 vs 2.7, P 〈 0.01） and the total square area of damage （10 ± 2 vs 21 ± 7, P 〈 0.01） were significantly reduced when compared with the vehicle-treated colitis group. OP was shown to decrease the tissue myeloperoxidase activity in colons （42 ± 11 vs 112 ± 40, P 〈 0.01） and enhance the amount of mucus of colitis mice （0.9 ± 0.1 vs 0.4 ± 0.1, P 〈 0.01）. The level of colonic malondialdehyde was noted to decrease in OP-pretreated mice （3.6 ± 0.7 vs 5.1 ± 0.8, P 〈 0.01）. OP was found to decrease the inflammatory status of mice as was determined by reduction of vascular permeability （161 ± 34 vs 241 ± 21, P 〈 0.01）. Adhesion of peritoneal neutrophils and macrophages was also shown to decrease after administration of OP （141 ± 50 vs 235 ± 37, P 〈 0.05）. CONCLUsION： Thus, a preventive effect of pectin from the common cranberry, namely oxycoccusan OP, on acetic acid-induced colitis in mice was detected. A reduction of neutrophil infiltration and antioxidant action may be implicated in the protective effect of oxycoccusan.

关键词： Common cranberry Vaccinium oxycoccos L Pectin Colitis Anti-inflammatory mice

Enhanced Ionic Accessibility of Flexible mXene Electrodes Produced by Natural sedimentation

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Nano-micro Letters 2020年第7期12卷 145-155页

作者： Ning sun Zhaoruxin Guan Qizhen Zhu Babak Anasori yury Gogotsi Bin Xu state Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China Department of materials science and Engineering and A.J.Drexel Nanomaterials Institute Drexel UniversityPhiladelphiaPA 19104USA Department of mechanical and Energy Engineering Integrated Nanosystems Development InstitutePurdue School of Engineering and TechnologyIndiana University-Purdue University IndianapolisIndianapolisIN 46202USA

mXene nanosheets have been used for preparing highly flexible integrated electrodes due to their two-dimensional(2D)morphology,flexibility,high conductivity,and abundant functional ***,restacking of 2D nanosheets inhibits the ion transport in mXene electrodes,limiting their thickness,rate performance,and energy storage ***,we employed a natural sedimentation method instead of the conventional vacuum-assisted filtration to prepare flexible Ti3C2TxmXene films with enlarged interlayer spacing,which facilitates the access of the lithium ions to the interlayers and thus leads to a greatly enhanced electrochemical *** naturally sedimented flexible film shows a double lithium storage capacity compared to the conventional vacuum-filtered mXene film,along with improved rate performance and excellent cycle stability.

关键词： mXene Natural sedimentation Vacuum filtration Interlayer spacing Li-storage