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Corrosive Pseudomonas Aeruginosa Detection by Measuring Pyocyanin with a Lab-on-Fiber Optical Surface Plasmon Resonance Biosensor in Aquatic Environments

SSRN

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SSRN 2023年

作者： Zheng, Wanlu Ju, Chunxue Liu, Pan Li, Zhong Liu, Jidong Zhang, Yanan Zhao, Yong Gu, Tingyue Wang, Fuhui Xu, Dake Fan, Yongqiang China Northeastern University China College of Information Science and Engineering Northeastern University Shenyang110819 China Shenyang National Laboratory for Materials Science Northeastern University Shenyang110819 China College of Life and Health Sciences Northeastern University Shenyang110819 China Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology Qinhuangdao066004 China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China Department of Chemical and Biomolecular Engineering Institute for Corrosion and Multiphase Technology Ohio University AthensOH45701 United States

Oceanic facilities and equipment corrosion present considerable economic and safety concerns, predominantly due to microbial corrosion. Early detection of corrosive microbes is pivotal for effective monitoring and prevention. Yet, traditional detection methods often lack specificity, require extensive processing time, and yield inaccurate results. Hence, the need for an efficient real-time corrosive microbe monitoring technology is evident. Pseudomonas aeruginosa, a widely distributed microorganism in aquatic environments, utilizes its production of quinone-like compounds, specifically pyocyanin (PYO), to corrode metals. Here, we report a novel fiber optic surface plasmon resonance (SPR) sensor modified by the C-terminal of BrlR protein (BrlR-C), which is a specific receptor of PYO molecule, to detect P. aeruginosa in aquatic environments. The results showed that the sensor had a good ability to recognize PYO in the concentration range of 0-1 μg/mL, and showed excellent sensing performance in real-time monitoring the growth status of P. aeruginosa. With a strong selectivity of PYO, the sensor could clearly detect P. aeruginosa against other bacteria in seawater environment, and exhibited excellent anti-interference ability against variations in pH, temperature and pressure and other interfering substances. This study provides a useful tool for monitoring corrosive P. aeruginosa biofilm in aquatic environments, which is a first of its kind example that serves as a laboratory model for the application of fiber optic technology in real-world scenarios to monitoring biofilms in microbial corrosion and biofouling. © 2023, The Authors. All rights reserved.

关键词： Optical fibers

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microrheology study on matrix remodelling by osteoblasts in 3D hydrogel in vitro culture

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Bone Reports 2022年 16卷

作者： Janne T. Koivisto Claude Oelschlaeger David Menne Norbert Willenbacher Tuomas Näreoja Karolinska Institutet Division of Pathology- Department of Laboratory Medicine Stockholm Sweden Karlsruhe Institute of Technology Institute of Mechanical Process Engineering and Mechanics Karlsruhe Germany University of Turku Department of Life Technologies Turku Finland

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Quantification of Synergistic Two-Color Covalent Bond Formation

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Angewandte Chemie 2024年第1期137卷

作者： Jan Hobich Dr. Florian Feist Phillip Werner Joshua A. Carroll Dr. Olaf Fuhr Prof. Dr. Eva Blasco Jun.-Prof. Dr. Hatice Mutlu Prof. Dr. Christopher Barner-Kowollik Institute of Nanotechnology (INT) Karlsruhe Institute of Technology (KIT) Kaiserstraße 12 76131 Karlsruhe Germany School of Chemistry and Physics Centre for Materials Science Queensland University of Technology (QUT) 2 George Street Brisbane QLD 4000 Australia Karlsruhe Nano Micro Facility (KNMFi) Karlsruhe Institute of Technology (KIT) Kaiserstraße 12 76131 Karlsruhe Germany Institute for Molecular Systems Engineering and Advanced Materials Heidelberg University Im Neuenheimer Feld 225 Heidelberg 69120 Germany Institut de Science des Matériaux de Mulhouse (IS2M) UMR 7361 CNRS/Université de Haute Alsace (UHA) 15 rue Jean Starcky Mulhouse Cedex 68057 France

The emergence of highly wavelength resolved reactivity information for complex photochemical reaction processes allows the establishment of multi-color reaction modes. One particularly powerful mode is the synergistic two-color reaction, where two colors of light have to be present in the same volume element to either enable or enhance photochemical reactivity that leads to a specific photoproduct. Herein, we introduce a two-color synergistic photochemical reaction system based on a diaryl indenone epoxide (DIO) photoswitch and the cis -to- trans isomerization of a bridged ring-strained azobenzene (SA), which respond to ultraviolet (365 nm) and visible light (430 nm), respectively, with different rates, forming a well-defined heterocyclic photoadduct, DIOSA, that we structurally confirm via single crystal x-ray diffraction (SXRD). To quantitatively capture the effectiveness of the dual-color irradiation as a function of the reaction conditions such as light intensity and starting material ratio as a function of product yield, we introduce a parameter, the photochemical synergistic ratio . A reduced termed —that extrapolates to conditions of infinitesimal conversions—allows to compare the efficiency of the synergistic photochemistry at varying reaction conditions.

关键词： Synergistic Two-Color Photochemistry Synergistic Ratio Photochemical Action Plots

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Model-based identification of production tolerances in battery production

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Procedia CIRP 2021年 104卷 1059-1064页

作者： Matthias Thomitzek Oke Schmidt Tim Abraham Felipe Cerdas Fridolin Röder Ulrike Krewer Christoph Herrmann Institute of Machine Tools and Production Technologies Chair of Sustainable Manufacturing and Life Cycle Engineering Technische Universität Braunschweig Langer Kamp 19b 38106 Braunschweig Germany Battery LabFactory Braunschweig (BLB) Technische Universität Braunschweig Langer Kamp 19 38106 Braunschweig Germany Institute of Energy and Process Systems Engineering Technische Universität Braunschweig Franz-Liszt-Straße 35 38106 Braunschweig Germany Chair of Electrical Energy Systems Universität Bayreuth Universitätsstraße 30 95447 Bayreuth Germany Institute for Applied Materials—Materials for Electrical and Electronic Engineering (IAM) Karlsruhe Institute of Technology Adenauerring 20b 76131 Karlsruhe Germany

Battery technology in combination with carbon-free energy presents a major paradigm shift for the future of the mobility and energy storage sector and already creates an immense demand for large scale battery factories. However, current battery production sites still report considerable scrap rates caused by insufficient process control and a lack of adequate production tolerances, which increase the cost and environmental impact of the battery cells. The present work introduces a methodology which assist in defining model-based production tolerances by considering the impact of varying process parameters on final cell properties in combination with production cost and cell revenue.

关键词： Modeling Quality assurance Tolerance design Battery production

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Towards establishing best practice in the analysis of hydrogen and deuterium by atom probe tomography

arXiv

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arXiv 2024年

作者： Gault, Baptiste Saksena, Aparna Sauvage, Xavier Bagot, Paul Aota, Leonardo S. Arlt, Jonas Belkacemi, Lisa T. Boll, Torben Chen, Yi-Sheng Daly, Luke Djukic, Milos B. Douglas, James O. Duarte, Maria J. Felfer, Peter J. Forbes, Richard G. Fu, Jing Gardner, Hazel M. Gemma, Ryota Gerstl, Stephan S.A. Gong, Yilun Hachet, Guillaume Jakob, Severin Jenkins, Benjamin M. Jones, Megan E. Khanchandani, Heena Kontis, Paraskevas Kramer, Mathias Kuhbach, Markus Marceau, Ross K.W. Mayweg, David Moore, Katie L. Nallathambi, Varatharaja Ott, Benedict C. Poplawsky, Jonathan D. Prosa, Ty Pundt, Astrid Saha, Mainak Schwarz, Tim M. Shang, Yuanyuan Shen, Xiao Vrellou, Maria Yu, Yuan Zhao, Yujun Zhao, Huan Zou, Bowen Max Planck Institute for Sustainable Materials Max-Planck-Straé 1 Dusseldorf Germany Department of Materials Imperial College London Royal School of Mines Prince Consort Rd South Kensington LondonSW7 United Kingdom Univ Rouen Normandie INSA Rouen Normandie CNRS Groupe de Physique des Materiaux UMR6634 Rouen76000 France Department of Materials University of Oxford Parks Road OxfordOX1 3PH United Kingdom University of Gottingen Institute for Materials Physics GottingenD-37077 Germany Leibniz-Institute for Materials Engineering-IWT Badgasteiner Straé 3 Bremen28359 Germany MAPEX Center for Materials and Processes Universitat Bremen Bibliothekstraé 1 Bremen28359 Germany Hermann-von-Helmholtz-Platz 1 Eggenstein-LeopoldshafenD-76344 Germany Australian Centre for Microscopy and Microanalysis The University of Sydney Australia School of Materials Science and Engineering Nayang Technological University Singapore Singapore School of Geographical and Earth Sciences University of Glasgow Glasgow United Kingdom University of Belgrade Faculty of Mechanical Engineering Kraljice Marije 16 Belgrade11120 Serbia Department of Materials Science & Engineering Institute I: General Materials Properties Friedrich-Alexander-Universitat Erlangen-Nurnberg Erlangen Germany Quantum Foundations and Technologies Group School of Mathematics and Physics University of Surrey United Kingdom Department of Mechanical and Aerospace Engineering Monash University Melbourne Australia Materials Science and Engineering UK Atomic Energy Authority Culham Science Centre Oxfordshire Abingdon United Kingdom Dept. of Applied Chemistry Tokai University Kanagawa259-1292 Japan Micro/Nano Technology Center Tokai University Kanagawa259-1292 Japan Scientific Center for Optical and Electron Microscopy ETH Zurich Zurich8093 Switzerland Department of Physics Chalmers University of Technology GoteborgSE-412 96 Sweden National Nuclear Laboratory Windscale Laboratory Sellafield Seascale

As hydrogen is touted as a key player in the decarbonization of modern society, it is critical to enable quantitative H analysis at high spatial resolution if possible at the atomic scale. Indeed, H has a known deleterious impact on the mechanical properties (strength, ductility, toughness) of most materials that can hinder their use as part of the infrastructure of a hydrogen-based economy. Enabling H mapping, including local hydrogen concentration analyses at specific microstructural features, is essential for understanding the multiple ways that H affect the properties of materials, including for instance embrittlement mechanisms and their synergies, but also spatial mapping and quantification of hydrogen isotopes is essential to accurately predict tritium inventory of future fusion power plants, ensuring their safe and efficient operation for example. Atom probe tomography (APT) has the intrinsic capabilities for detecting hydrogen (H), and deuterium (D), and in principle the capacity for performing quantitative mapping of H within a material s microstructure. Yet the accuracy and precision of H analysis by APT remain affected by the influence of residual hydrogen from the ultra-high vacuum chamber that can obscure the signal of H from within the material, along with a complex field evaporation behavior. The present article reports the essence of discussions at a focused workshop held at the Max-Planck institute for Sustainable Materials in April 2024. The workshop was organized to pave the way to establishing best practices in reporting APT data for the analysis of H. We first summarize the key aspects of the intricacies of H analysis by APT and propose a path for better reporting of the relevant data to support interpretation of APT-based H analysis in materials. Copyright © 2024, The Authors. All rights reserved.

关键词： Hydrogen

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Guiding Design of Mn-Rich Phosphate Cathodes with Less Intrinsic Antisite Defects

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Angewandte Chemie 2025年

作者： Chunliu Xu Weibo Hua Guilin Feng Zhao Chen Ruijuan Xiao Qinghua Zhang Weiqing Yang Chao Yang Junmei Zhao Yong-Sheng Hu CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P.R. China Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P.R. China Research Institute of Frontier Science Southwest Jiaotong University Chengdu 610031 P.R. China Institute of Applied Materials (IAM) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 Eggenstein Leopoldshafen 76344 Karlsruhe Germany School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P.R. China

The serious voltage hysteresis phenomenon in Na 3 MnTi(PO 4 ) 3 has received extensive research interests, which is determined by the intrinsic-antisite-defects (IASDs) of Mn 2+ resided in Na vacancies (Mn/Na □ ) in structure. However, a general guideline to decrease IASDs is still lacking for the design of a higher-performance Na 3 MnTi(PO 4 ) 3 system. Herein, we find that generation of Mn/Na□ IASDs in Na 3 MnTi(PO 4 ) 3 system is mainly related to Na vacancies and weaker Mn─O bonds in structure. The more Na vacancies, the more probability for Mn 2+ occupation on Na sites. Meanwhile, the weaker Mn─O bond, the more probability for Mn 2+ delocalization/migration to other sites, finally leading to the Mn/Na □ IASDs. To decrease Mn/Na □ IASDs, we propose to introduce dopants with lower valence (vs. Ti 4+ ), lower electronegativity (vs. Ti 4+ ), and good solid solubility in Na 3 MnTi(PO 4 ) 3 system. Based on the guiding rule, we have selected several doping cations (including Cr 3+ , Ti 3+ , Fe 3+ , and V 3+ ) to construct a Na-rich environment and enhance Mn─O strength. Among various dopants, the substitution of V 3+ for Ti 4+ leads to the strongest Mn–O interaction, thus demonstrating the most effective suppression of Mn/Na □ IASDs. With these discoveries, we further developed a series of V-doped Mn-richer phosphate cathodes, Na 3.3+ y Mn 1.15 V y Ti 0.85- y (PO 4 ) 3 (0.1 ≤ y ≤ 0.25) as the promising candidates for Na-ion batteries.

关键词： Antisite-defects Electronegativity Mn─O chemical bond Na-ion batteries Voltage hysteresis

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Development of catalytic ceramic filter candles for tar conversion

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Fuel Communications 2021年 7卷

作者： Grazyna Straczewski Kengo Koutera Uta Gerhards Krassimir Garbev Hans Leibold Institute for Technical Chemistry Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany Institute for Micro Process Engineering Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany

A catalyst with a high activity in tar conversion, impregnated on the ceramic hot gas filter material was developed. The aim of the experiments was to estimate the light-off temperature of the catalytic filter elements for naphthalene (tar model compounds) conversion and the long-term catalytic stability at a temperature of 700 °C. Configuration of the catalyst was optimized through improvements in coking resistance and long-term stability. The composition and morphology parameters of the filter material were considered. Both the impregnation methods and the composition of the impregnation solution were investigated and validated. The catalyst composed of Ni, Fe, Cr oxides, promoted with Pt (AlSi-Cat43-Pt), and impregnated on the ceramic-fiber filter composed of Al 2 O 3 (44%)/SiO 2 (56%) was found to be the most active catalyst. The designated catalyst was catalytically active at temperatures of about 700 °C, with a naphthalene conversion of around 93% over 95 h without catalyst deactivation. We found that the steam and gas compositions had an influence on the catalytic activity of the filter elements. The same catalytic filter was catalytically active for 115 h at a low concentration of H 2 O (10 vol%) and H 2 (3 vol%) with a naphthalene conversion of 98% at 790 °C without significant deactivation.

关键词： Ceramic-fiber composite filter Catalytic ceramic filter Ni-based catalyst Noble-metal promoters Tar conversion Catalyst long-term activity

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Accelerating process development for protein crystallization with advanced analytics

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Chemie Ingenieur Technik 2022年第9期94卷

作者： C. H. Wegner I. Zimmermann J. Hubbuch Karlsruhe Institute of Technology Institute of Process Engineering in Life Sciences Section IV: Biomolecular Separation Engineering Fritz-Haber-Weg 2 76131 Karlsruhe Germany Technical University of Munich TUM School of Engineering and Design Bioseparation Engineering Group Boltzmannstr. 15 85748 Garching Germany

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Thermal accommodation in nanoporous silica for vacuum insulation panels

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International Journal of Thermofluids 2020年 1-2卷

作者： Sonnick, S. Meier, M. Ünsal-Peter, G. Erlbeck, L. Nirschl, H. Rädle, M. CeMOS – Center for Mass Spectrometry and Optical Spectroscopy Mannheim University of Applied Sciences Paul-Wittsack-Straße 10 Mannheim68163 Germany Institute for Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology Straße am Forum 8 Karlsruhe76131 Germany

The thermal accommodation coefficient is a measure for the quality of thermal energy exchange between gas molecules and a solid surface. It is an important parameter to describe heat flow in rarefied gases, for example, in aerospace or vacuum technology. As special application, it plays a decisive role for the thermal transport theory in silica filled vacuum insulation panels. So far, no values have been available for the material pairings of silica and various gases. For that reason, this paper presents thermal conductivity measurements under different gas-pressure conditions for precipitated and fumed silica in combination with the following gases: helium, air, argon, carbon dioxide (CO2), sulfur dioxide (SO2), krypton, and sulfur hexafluoride (SF6). Additionally, a calculation method for determining thermal accommodation coefficients from the thermal conductivity curves in combination with the pore size distribution of silica determined by mercury intrusion porosimetry is introduced. The results are compared with existing models. © 2020 The Author(s)

关键词： Carbon dioxide

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Fluid Tunnel Research for Challenges of Urban Climate

arXiv

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arXiv 2023年

作者： Zhao, Yongling Chew, Lup Wai Fan, Yifan Gromke, Christof Hang, Jian Yu, Yichen Ricci, Alessio Zhang, Yan Xue, Yunpeng Fellini, Sofia Mirzaei, Parham A. Gao, Naiping Carpentieri, Matteo Salizzoni, Pietro Niu, Jianlei Carmeliet, Jan Department of Mechanical and Process Engineering ETH Zürich Switzerland Department of the Built Environment National University of Singapore Singapore College of Civil Engineering and Architecture Zhejiang University Zhejiang University China International Research Center for Green Building and Low-Carbon City Zhejiang University China Institute for Hydromechanics Karlsruhe Institute of Technology Germany School of Atmospheric Sciences Sun Yat-Sen University China Department of Building Environment and Energy Engineering Hong Kong Polytechnic University Hong Kong University School for Advanced Studies IUSS Italy Eindhoven University of Technology Netherlands Future Resilient Systems Singapore-ETH Centre ETH Zurich Singapore Univ Lyon INSA Lyon CNRS Ecole Centrale de Lyon Univ Claude Bernard Lyon 1 France Architecture & Built Environment Department University of Nottingham United Kingdom Department of Mechanical Engineering Tongji University China Department of Mechanical Engineering Sciences University of Surrey United Kingdom

Experimental investigations using wind and water tunnels have long been a staple of fluid mechanics research for a large number of applications. These experiments often single out a specific physical process to be investigated, while studies involving multiscale and multi-physics processes are rare due to the difficulty and complexity in the experimental setup. In the era of climate change, there is an increasing interest in innovative experimental studies in which fluid (wind and water) tunnels are employed for modelling multiscale, multi-physics phenomena of the urban climate. High-quality fluid tunnel measurements of urban-physics related phenomena are also much needed to facilitate the development and validation of advanced multi-physics numerical models. As a repository of knowledge in modelling these urban processes, we cover fundamentals, recommendations and guidelines for experimental design, recent advances and outlook on eight selected research areas, including (i) thermal buoyancy effects of urban airflows, (ii) aerodynamic and thermal effects of vegetation, (iii) radiative and convective heat fluxes over urban materials, (iv) influence of thermal stratification on land-atmosphere interactions, (v) pollutant dispersion, (vi) indoor and outdoor natural ventilation, (vii) wind thermal comfort, and (viii) urban winds over complex urban sites. Further, three main challenges, i.e., modelling of multi-physics, modelling of anthropogenic processes, and combined use of fluid tunnels, scaled outdoor and field measurements for urban climate studies, are discussed. © 2023, CC BY-NC-SA.

关键词： Urban growth

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