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MOF-Like 3D Graphene-Based Catalytic Membrane Fabricated by One-Step Laser Scribing for Robust Water Purification and Green Energy Production

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Nano-Micro Letters 2022年第11期14卷 48-61页

作者： Xinyu Huang Liheng Li Shuaifei Zhao Lei Tong Zheng Li Zhuiri Peng Runfeng Lin Li Zhou Chang Peng Kan-Hao Xue Lijuan Chen gary j.Cheng Zhu Xiong Lei Ye School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Hubei Yangtze Memory Laboratories Wuhan 430205People’s Republic of China Institute for Frontier Materials Deakin UniversityGeelongVIC 3216Australia Key Laboratory of New Processing Technology for Nonferrous Metal and Materials(Ministry of Education) Guangxi Key Laboratory of Optical and Electronic Materials and DevicesCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004People’s Republic of China College of Chemistry and Materials Science Hunan Agricultural UniversityHunan 410128People’s Republic of China School of Material Science and Engineering Hunan University of Science and TechnologyXiangtanHunan ProvincePeople’s Republic of China School of Industrial Engineering and Birck Nanotechnology Centre Purdue UniversityWest LafayetteIN 47907USA Institute of Environmental Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongPeople’s Republic of China

Increasing both clean water and green energy demands for survival and development are the grand challenges of our ***,we successfully fabricate a novel multifunctional 3D graphene-based catalytic membrane(3D-GCM)with active metal nanoparticles(AMNs)loading for simultaneously obtaining the water purification and clean energy generation,via a“green”one-step laser scribing *** as-prepared 3D-GCM shows high porosity and uniform distribution with AMNs,which exhibits high permeated fluxes(over 100 L m^(−2) h^(−1))and versatile super-adsorption capacities for the removal of tricky organic pollutants from wastewater under ultra-low pressure-driving(0.1 bar).After adsorption saturating,the AMNs in 3D-GCM actuates the advanced oxidization process to self-clean the fouled membrane via the catalysis,and restores the adsorption capacity well for the next time membrane *** importantly,the 3D-GCM with the welding of laser scribing overcomes the lateral shear force damaging during the long-term ***,the 3D-GCM could emit plentiful of hot electrons from AMNs under light irradiation,realizing the membrane catalytic hydrolysis reactions for hydrogen energy ***“green”precision manufacturing with laser scribing technology provides a feasible technology to fabricate high-efficient and robust 3D-GCM microreactor in the tricky wastewater purification and sustainable clean energy production as well.

关键词： 3D graphene Laser scribing Catalytic membrane Water purification Hydrogen production

Laser-induced microjet-assisted ablation for high-quality microfabrication

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International journal of Extreme Manufacturing 2022年第3期4卷 122-130页

作者： Yang Guo Pei Qiu Shaolin Xu gary j Cheng School of Mechatronics Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China School of Industrial Engineering Purdue UniversityWest LafayetteIN 47906United States of America

Liquid-assisted laser ablation has the advantage of relieving thermal effects of common laser ablation processes, whereas the light scattering and shielding effects by laser-induced cavitation bubbles, suspended debris, and turbulent liquid flow generally deteriorate laser beam transmission stability, leading to low energy efficiency and poor surface quality. Here, we report that a continuous and directional high-speed microjet will form in the laser ablation zone if laser-induced primary cavitation bubbles asymmetrically collapse sequentially near the air-liquid interface under a critical thin liquid layer. The laser-induced microjet can instantaneously and directionally remove secondary bubbles and ablation debris around the laser ablation region, and thus a very stable material removal process can be obtained. The shadowgraphs of high-speed camera reveal that the average speed of laser-induced continuous microjet can be as high as 1.1 m sin its initial 500 μm displacement. The coupling effect of laser ablation, mechanical impact along with the collapse of cavitation bubbles and flushing of high-speed microjet helps achieve a high material removal rate and significantly improved surface quality. We name this uncovered liquid-assisted laser ablation process as laser-induced microjet-assisted ablation(LIMjAA) based on its unique characteristics. High-quality microgrooves with a large depth-to-width ratio of 5.2 are obtained by LIMjAA with a single-pass laser scanning process in our experiments. LIMjAA is capable of machining various types of difficult-to-process materials with high-quality arrays of micro-channels, square and circle microscale through-holes. The results and disclosed mechanisms in our work provide a deep understanding of the role of laser-induced microjet in improving the processing quality of liquid-assisted laser micromachining.

关键词： liquid-assisted laser ablation laser-induced microjet cavitation bubbles laser microfabrication

Imitations of Beings Enter and Exit： Plotinus on Incorporeal Matter in Plato： Ⅲ 6[26] 11-15

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journal of Philosophy Study 2013年第2期3卷 123-130页

作者： gary M. Gurtler, S.j. Boston College

Plotinus＇ account of matter in Ennead III 6[26] 11-15 serves two purposes. The terms, evil and ugly, present the negative side of matter＇s causality, providing for the change characteristic of the sensible world and the possibility of ontological evil and privation as well as of moral evil among human beings. The receptacle and other images from Plato＇s Timaeus present the positive side of this causality, matter as allowing for the presence of forms in the bodies of the sensible world. Plotinus explicitly articulates the linguistic problem surrounding the nature of matter, since language is derived from the corporeal and thus needs constant correction when applied to matter as incorporeal. His use of language, thus, always has two phases, first, capturing the nature of matter as aptly as possible, and second, highlighting the difference between matter and the image, analogy, or metaphor used to help explain it.

关键词： matter evil receptacle chora form good appearance Timaeus

High-quality-factor tantalum oxide nanomechanical resonators by laser oxidation of TaSe2

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Nano Research 2015年第9期8卷 2842-2849页

作者： Santiago j. CartamiI-Bueno Peter G. Steeneken Frans D. Tichelaar Efren Navarro-Moratalla Warner j. Venstra Ronald van Leeuwen Eugenio Coronado Herre S.j. van der Zant gary A. Steele Andres Castellanos-Gomez Kavli Institute of Nanoscience Delft University of Technology Lorentzweg 1 2628 CJ Delft The Netherlands Kavli Institute of Nanoscience Delft University of Technology National Centre for HREM Lorentzweg 1 2628 CJ Delft The Netherlands Instituto Ciencia Molecular (ICMol) Univ. Valencia C/Catedrdtico Jos@ Beltrdn 2 E-46980 Paterna Spain

Controlling the strain in two-dimensional （2D） materials is an interesting avenue to tailor the mechanical properties of nanoelectromechanical systems. Here, we demonstrate a technique to fabricate ultrathin tantalum oxide nanomechanical resonators with large stress by the laser oxidation of nano-drumhead resonators composed of tantalum diselenide （TaSe2）, a layered 2D material belonging to the metal dichalcogenides. Before the study of their mechanical properties with a laser interferometer, we verified the oxidation and crystallinity of the freely suspended tantalum oxide using high-resolution electron microscopy. We demonstrate that the stress of tantalum oxide resonators increases by 140 MPa （with respect to pristine TaSe2 resonators）, which causes an enhancement in the quality factor （14 times larger） and resonance frequency （9 times larger） of these resonators.

关键词： TaSe2,tantalum oxide,mechanical resonators,laser oxidation,optical interferometer,high quality factor

Design of an Evacuation Demand Forecasting Module for Hurricane Planning Applications

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journal of Transportation Technologies 2016年第5期6卷 257-276页

作者： gary P. Moynihan Daniel j. Fonseca Department of Civil Construction and Environmental Engineering The University of Alabama Tuscaloosa AL USA Department of Mechanical Engineering The University of Alabama Tuscaloosa AL USA

This paper discusses the development and implementation of an evacuation demand forecasting module that was incorporated into a comprehensive decision support system for the planning and management of contraflow operations in the Gulf of Mexico. Contraflow implies the reversing of one direction of a highway in order to permit a substantially increased travel demand exiting away from an area impacted by a natural disaster or any other type of catastrophic event. Correctly estimating the evacuation demand originated from such a catastrophic event is critical to a successful contraflow implementation. One problem faced by transportation officials is the arranging of the different stages of this complex traffic procedure. Both the prompt deployment of resources and personnel as well as the duration of the actual contraflow affect the overall effectiveness, safety and cost of the evacuation event. During this project, researchers from the University of Alabama developed an integral decision support system for contraflow evacuation planning to assist the Alabama Department of Transportation Maintenance Bureau in the evaluation and planning of contraflow operations oriented to mitigate the evacuation burdens of a hurricane event. This paper focuses on the design of the demand forecasting module of such a decision support system.

关键词： Hurricane Evacuation Road Capacity Demand Forecasting Decision Support System

An Advanced Electrolyte and Flux System Used to Convert Phenol Sulfonic Acid Electrotin Lines to Methane Sulfonic Acid

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An Advanced Electrolyte and Flux System Used to Convert Phen...

“第十届中国钢铁年会”暨“第六届宝钢学术年会”

作者： gary j.Lombardo Plating Quaker Chemical Corporation

With ever increasing demand to reduce cost and environmental impact, more tinplate producers are looking to switch away from Phenol Sulfonic Acid（PSA） based electrolytes. The tried and tested choice when switching, is the Methane Sulfonic Acid（MSA） based electrolyte. One hurdle to converting an existing PSA electrotin line（ETL） to MSA is the haze problem caused by MSA build up in the flux tank. This haze problem necessitates adding extra rinse tanks or using excessive rinse water to prevent the blue haze caused by MSA in the flux tank. This is because most PSA ETL’s have only two tanks after plating, one dunk tank, and one flux tank. Some tinplate producers have installed expensive post rinse flux applicators to get around this problem when using MSA. This paper describes a novel MSA electrolyte and flux system. The flux can be used in the flux tank of all existing PSA lines. The flux is totally compatible with the MSA electrolyte and can be counter flowed back into the plating tank. This unique flexibility negates the need to make expensive modifications to the PSA ETL when switching to MSA.

关键词： methane sulfonic acid phenol sulfonic acid ferrostan

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细胞内蛋白质磁共振(英文)

波谱学杂志 2012年第4期29卷 475-488页

作者：王亚强李从刚 PIELAK gary j 北卡罗来纳大学教堂山分校化学系美国教堂山27599 波谱与原子分子物理国家重点实验室武汉磁共振中心(中国科学院武汉物理与数学研究所)湖北武汉430071 北卡罗来纳大学教堂山分校生物化学与生物物理系美国教堂山27599 北卡罗来纳大学教堂山分校莱恩伯格综合癌症中心美国教堂山27599

细胞内的环境异常复杂,其中生物大分子的浓度超过300mg/mL并占据着大约30%的细胞内空间.然而,直到目前为止大多数的蛋白质研究仍然在细胞外或是甚至非常稀的缓冲液中进行.细胞内磁共振(In-cell NMR)提供了一个可以直接非损伤地获取细胞... 详细信息

细胞内的环境异常复杂,其中生物大分子的浓度超过300mg/mL并占据着大约30%的细胞内空间.然而,直到目前为止大多数的蛋白质研究仍然在细胞外或是甚至非常稀的缓冲液中进行.细胞内磁共振(In-cell NMR)提供了一个可以直接非损伤地获取细胞内原子水平信息的方法.虽然In-cell NMR在近10年里有了较大的发展,但是这一技术尚未成熟.在该篇综述中,作者首先总结制约这一技术发展的因素以及研究中需要注意的事项,最后讨论了未来的发展方向.

关键词：细胞内磁共振(In—cell NMR) 蛋白质大肠杆菌顺磁共振(EPR)

The Longibrachiatum Clade of Trichoderma:a revision with new species

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Fungal Diversity 2012年第4期55卷 77-108页

作者： gary j.Samuels Adnan Ismaiel Temesgen B.Mulaw George Szakacs Irina S.Druzhinina Christian P.Kubicek Walter M.jaklitsch United States Department of Agriculture Agricultural Research ServiceSystematic Mycology&Microbiology LaboratoryB-010a10300 Baltimore AveBeltsvilleMD 20705USA Center for Environmental Science Institute of Marine and Environmental TechnologyUniversity of MarylandBaltimoreMD 21201USA Department of Applied Biotechnology and Food Science Budapest University of Technology and Economics(BUTE)1111 BudapestGellért ter 4Hungary Vienna University of Technology Institute of Chemical EngineeringGetreidemarkt 9/1661060 WienAustria Department of Systematic and Evolutionary Botany Faculty Centre of BiodiversityUniversity of ViennaRennweg 141030 ViennaAustria

The Longibrachiatum Clade of Trichoderma is *** new species are described(***,***,***,***,***,***,***,***).The twenty-one species known to belong to the Longibrachiatum Clade are included in a synoptic *** parareesei and *** are redescribed based on new collections or additional *** teleomorphs are reported for *** and *** described species are annotated.

关键词： Hypocrea Hypocreaceae Hypocreales Endophyte Medical mycology Revision Systematics Taxonomy Soil fungi Biogeography

A review on microstructures and properties of high entropy alloys manufactured by selective laser melting

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International journal of Extreme Manufacturing 2020年第3期2卷 64-84页

作者： Chen Zhang junkai Zhu Huai Zheng Hui Li Sheng Liu gary j Cheng The Institute of Technological Sciences Wuhan UniversityWuhan 430072People's Republic of China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072People's Republic of China School of Industrial Engineering Purdue UniversityWest LafayetteIN 47906United States of America

High entropy alloys(HEAs)with multi-component solid solution microstructures have the potential for large-scale industrial applications due to their excellent mechanical and functional ***,the mechanical properties of HEAs limit the selection of processing *** manufacturing technology possesses strong processing adaptability,making itthe best candidate method to overcome this *** comprehensive review examines the current state of selective laser melting(SLM)of *** SLM to HEAs processing is motivated by its high quality for dimensional accuracy,geometric complexity,surface roughness,and *** review focuses on analyzing the current developments and challenges in SLM of HEAs,including defects,microstructures,and properties,as well as strengthing prediction models of fabricated *** review also offers directions for future studies to address existing challenges and promote technological advancement.

关键词： high entropy alloys selective laser melting microstructure property strengthening model