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Engineering electrode interfaces for telecom-band photodetection in MoS_(2)/Au heterostructures via sub-band light absorption

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Light(Science & Applications) 2023年第12期12卷 2677-2687页

作者： Chengyun Hong Saejin Oh Vu Khac Dat Sangyeon Pak SeungNam Cha Kyung-Hun Ko Gyung-Min Choi tony low Sang-Hyun Oh Ji-Hee Kim Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea Center for Integrated Nanostructure Physics(CINAP) Institute for Basic Science(IBS)Sungkyunkwan UniversitySuwon 16419Republic of Korea School of Electronic and Electrical Engineering Hongik UniversitySeoul 04066Republic of Korea Department of Physics Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Electrical and Computer Engineering University of MinnesotaMinneapolisMN 55455USA Department of Physics Pusan National UniversityBusan 46241Republic of Korea

Transition metal dichalcogenide(TMD)layered semiconductors possess immense potential in the design of photonic,electronic,optoelectronic,and sensor ***,the sub-bandgap light absorption of TMD in the range from near-infrared(NIR)to short-wavelength infrared(SWIR)is insufficient for applications beyond the bandgap ***,we report that the sub-bandgap photoresponse of MoS_(2)/Au heterostructures can be robustly modulated by the electrode fabrication method *** observed up to 60%sub-bandgap absorption in the MoS_(2)/Au heterostructure,which includes the hybridized interface,where the Au layer was applied via sputter *** greatly enhanced absorption of sub-bandgap light is due to the planar cavity formed by MoS_(2) and Au;as such,the absorption spectrum can be tuned by altering the thickness of the MoS_(2) *** in the SWIR wavelength range increases due to increased absorption,which means that broad wavelength detection from visible toward SWIR is *** also achieved rapid photoresponse(~150μs)and high responsivity(17 mA W^(-1))at an excitation wavelength of *** findings demonstrate a facile method for optical property modulation using metal electrode engineering and for realizing SWIR photodetection in wide-bandgap 2D materials.

关键词： MoS_(2) absorption electrode

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Characterization of phenanthrene degradation by strain Polyporus sp. S133

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Journal of Environmental Sciences 2010年第1期22卷 142-149页

作者： tony Hadibarata Sanro Tachibana Department of Applied Bioscience Faculty of AgricultureEhime University Laboratorium of Pulp and Paper Department of Forest TechnologyMulawarman University Kampus Gunung Kelua

Polyporus sp. S133, a fungus collected from contaminated soil, was used to degrade phenanthrene, a polycyclic aromatic hydrocarbon, in a mineral salt broth liquid culture. A maximal degradation rate （92%） was obtained when Polyporus sp. S133 was cultured for 30 days with agitation at 120 r/min, as compared to 44% degradation in non-agitated cultures. Furthermore, the degradation was affected by the addition of surfactants. Tween 80 was the most suitable surfactant for the degradation of phenanthrene by Polyporus sp. S 133. The degradation rate increased as the amount of Tween 80 added increased. The rate in agitated cultures was about 2 times that in non-agitated cultures. The mechanism of degradation was determined through the identification of metabolites; 9,10-phenanthrenequinone, 2,2＇-diphenic acid, phthalic acid, and protocatechuic acid. Several enzymes （manganese peroxidase, lignin peroxidase, laccase, 1,2-dioxygenase and 2,3-dioxygenase） produced by Polyporus sp. S133 were detected during the incubation. The highest level of activity was shown by 1,2-dioxygenase （187.4 U/L） after 20 days of culture.

关键词： phenanthrene biodegradation metabolites Polyporus sp. S 133

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Light controlled imaging probes for intracellular target recognition： photochromism as a tool to enhance sensing precision

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Science China Chemistry 2017年第12期60卷 1563-1564页

作者： tony D. James Department of Chemistry University of BathBath BA2 7AYUK

Chemosensors and imaging probes have been the focus of significant research interest over the past few decades. In part due to ease of preparation and simplicity in manipulation, fluorescent probes have been extensive... 详细信息

关键词： Light controlled imaging probes for intracellular target recognition photochromism enhance sensing precision

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A METHOD FOR PERFORMANCE MODELING AND EVALUATION OF LDPC DECODER ARCHITECTURE

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第2期4卷 101-114页

作者： tony TSANG Hong Kong Polytechnic University Hung Hom Hong Kong

This paper presents a high-throughput memory efficient decoder for low density parity check(LDPC)codes in the high-rate wireless personal area network *** novel techniques which can apply to our selected LDPC code is proposed,including parallel blocked layered decoding architecture and simplification of the WiGig ***-of-the-art flexible LDPC decoders cannot simultaneously achieve the high throughput mandated by these standards and the low power needed for mobile *** work develops a flexible,fully pipelined architecture for the IEEE 802.11ad standard capable of achieving both *** use Real Time–Performance Evaluation Process Algebra(RT-PEPA)to evaluate a typical LDPC Decoder system’s *** approach is more convenient,flexible,and lower cost than the former simulation method which needs to develop special hardware and software ***,we can easily analyze how changes in performance depend on changes in a particular mode by supplying ranges for parameter values.

关键词： LPDC IEEE 802.11.ad RT-PEPA performance analysis formal modeling.

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Experimental study of path planning problem using EMCOA for a holonomic mobile robot

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Journal of Systems Engineering and Electronics 2021年第6期32卷 1450-1462页

作者： MOHSENI Alireza DUCHAINE Vincent WONG tony Department of System Engineering École de Technologie SupérieureMontreal QC H3C 1K3Canada

In this paper,a comparative study of the path planning problem using evolutionary algorithms,in comparison with classical methods such as the A*algorithm,is presented for a holonomic mobile *** configured navigation system,which consists of the integration of sensors sources,map formatting,global and local path planners,and the base controller,aims to enable the robot to follow the shortest smooth path ***-based mapping is used for scoring paths efficiently,allowing the determination of collision-free trajectories from the initial to the target *** work considers the evolutionary algorithms,the mutated cuckoo optimization algorithm(MCOA)and the genetic algorithm(GA),as a global planner to find the shortest safe path among others.A non-uniform motion coefficient is introduced for MCOA in order to increase the performance of this algorithm.A series of experiments are accomplished and analyzed to confirm the performance of the global planner implemented on a holonomic mobile *** results of the experiments show the capacity of the planner framework with respect to the path planning problem under various obstacle layouts.

关键词： holonomic robot path planning evolutionary algorithm(EA)

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Fundamental Analysis of Helium-Gas Coolant Leakage Rate Through First-Wall Cracks in Tokamak Fusion Reactors

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Journal of Thermal Science 1993年第1期2卷 12-17页

作者： tony C.Min Department of Mechanical Engineering North Carolina A & TState UniversityGreensboroNC 27411 U.S.A.

A fundamental analysis of helium-gas coolant leakage rate through first-wall cracks in Tokamak fusion reactors was made. Criteria for ascertaining the correct flow models were thoroughly investigated. After testing the criteria, it was determined that the correct model is the compressible choked flow for the helium-gas coolant under the normal operating conditions in the Tokamak fusion reactors. The upper bound leakage rates through metallic wall for two crack sizes were calculated. The calculated maximum numbers of allowable cracks through metallic and silicon-carbon composite wall were also reported. The experimental data of specimen S-23 (the small crack size), checked with the predicted or calculated leakage rate. But the experimental data of specimen S-4 (the large crack size, which is only 4.4 times larger than the crack size of specimen S-23) were two orders of magnitude higher than the calculated value. This is probably due to the many through-cracks undetected and therefore, not reported in the experiment, and not due to the difference in crack sizes. It should be noted that since there are only two test data points, it is recommended that more testing or experimental data will be needed. The results of two previous investigations about the calculated leakage values, their equations used, and their flow models employed were also reviewed. It is concluded that the correct model for the analysis is the compressible choked flow, and that helium can be as an effective coolant for fusion power reactors. Several recommendations are also made. Specifically, more experiments for helium, and similar analysis and experiments for lithium and water coolant are needed; and should be encouraged.

关键词： coolant leakage rate Tokamak fusion reactor flow model.

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Conjugate Heat Transfer Characterization in Cooling Channels

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Journal of Thermal Science 2012年第3期21卷 286-294页

作者： Beni Cukurel tony Arts Claudio Selcan von Karman Institute for Fluid Dynamics Turbomachinery Department Chaussée de Waterloo

Cooling technology of gas turbine blades,primarily ensured via internal forced convection,is aimed towards withdrawing thermal energy from the *** promote heat exchange,the walls of internal cooling passages are lined with repeated geometrical flow disturbance elements and surface *** the heat transfer at the expense of increased pressure loss;the goal is to obtain the highest possible cooling effectiveness at the lowest possible pressure drop *** cooling channel heat transfer problem involves convection in the fluid domain and conduction in the *** coupled behavior is known as conjugate heat *** experimental study models the effects of conduction coupling on convective heat transfer by applying iso-heat-flux boundary condition at the external side of a scaled serpentine *** involve local temperature measurements performed by Infrared Thermography over flat and ribbed slab *** number distributions along the wetted surface are obtained by means of heat flux distributions,computed from an energy balance within the metal *** the flat plate experiments,the effect of conjugate boundary condition on heat transfer is estimated to be in the order of 3%.In the ribbed channel case,the normalized Nusselt number distributions are compared with the basic flow *** the findings with other conjugate and convective iso-heat-flux literature,a high degree of overall correlation is evident.

关键词： conjugate heat transfer turbine cooling channel convection infrared thermography

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High-Throughput Automatic Training System for Spatial Working Memory in Free-Moving Mice

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Neuroscience Bulletin 2019年第3期35卷 389-400页

作者： Shimin Zou Chengyu tony Li Institute of Neuroscience State Key Laboratory of NeuroscienceChinese Academy of SciencesCAS Center for Excellence in Brain Science and Intelligence TechnologyShanghai Center for Brain Science and Brain-Inspired TechnologyShanghai 200031China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China

Effcient behavioral assays are crucial for understanding the neural mechanisms of cognitive ***, we designed a high-throughput automatic training system for spatial cognition(HASS) for free-moving *** were trained to return to the home arm and remain there during a delay period. Software was designed to enable automatic training in all its phases, including habituation, shaping, and learning. Using this system, we trained mice to successfully perform a spatially delayed nonmatch to sample task, which tested spatial cognition,working memory, and decision making. Performance depended on the delay duration, which is a hallmark of working memory tasks. The HASS enabled a human operator to train more than six mice simultaneously with minimal intervention, therefore greatly enhancing experimental efficiency and minimizing stress to the *** with the optogenetic method and neurophysiological techniques, the HASS will be useful in deciphering the neural circuitry underlying spatial cognition.

关键词： Cognitive functions Automatic training Free-moving mice Working memory Spatial cognition

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Role of microRNAs in the predisposition to gastrointestinal malignancies

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World Journal of Clinical Cases 2020年第9期8卷 1580-1585页

作者： Maria Baz tony Ibrahim Department of Tumor Molecular Biology Gustave Roussy Cancer CampusVillfejuif 94805France Department of Medical Oncology Gustave Roussy Cancer CampusVillfejuif 94805France

MicroRNAs(miRNAs)are highly deregulated in cancer and play a role in the initiation of ***,miRNAs have attracted attention in gastrointestinal(GI)*** nucleotide polymorphisms(SNPs)could affect the genes involved in each step of miRNA *** metaanalyses of case-control studies have assessed the association between miRNA“pathway”gene-SNPs(including biosynthesis regulators and binding sites)and susceptibility to GI *** present in this mini-review the current knowledge on the association between miRNAs“pathway”genes and GI cancer *** interaction between miRNA/regulators/binding site-SNPs and environmental as well as genomic factors is an interesting field that should be exploited in future studies.

关键词： Cancer Digestive tract MicroRNA Review Risk Single nucleotide polymorphism

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Special issue on “Molecular Sensors and Molecular Logic Gates”

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Frontiers of Chemical Science and Engineering 2022年第1期16卷 1-3页

作者： Luling Wu tony D.James Department of Chemistry University of BathBath BA27AYUK

This issue of Frontiers of Chemical Science and Engineering highlights recent progress toward fluorescent probes that was originally conceived to coincide with 7th Conference on Molecular Sensors and Molecular Logic Gates(MSMLG 2020)to celebrate the career of Seiji Shinkai and hosted by Anthony Czarnik at the University of Nevada in ***,that meeting was cancelled due to the pandemic associated with ***,this collection of research and review papers will now serve as an introduction to MSMLG 2022 which will be in Dublin,Ireland on 7–10 June 2022,where Thorfinnur Gunnlaugsson will be the local *** collection of papers contained in this special issue covers in vitro and in vivo applications and illustrates the potential for practical sensing and imaging of disease-related species.

关键词： Sensors Logic Molecular

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