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Molecularly horizontal stacking benefits charge separation through delocalized charge transfer states at donor-acceptor interfaces

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Molecularly horizontal stacking benefits charge separation t...

Lau Effect Using LED Array for Lithography

第十一届新型太阳能材料科学与技术学术研讨会

作者： Xiangkun Jia David Beljonne Donato Spoltore Koen Vandewal Department of Physics Zhengzhou University Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics Technische Universit?t Dresden Laboratory for Chemistry of Novel Materials University of Mons Institute for Materials Research (IMO-IMOMEC) Hasselt University

The energetic landscape at the interface between electron donating and accepting molecular materials favors efficient conversion of intermolecular charge-transfer(CT) states into free charge carriers in high-performance organic solar ***,we elucidate how interfacial energetics,charge generation and radiative recombination are affected by molecular *** experimentally determine the CT dissociation properties of a series of model,small molecule donor-acceptor blends,where the used acceptors(B2PYMPM,B3PYMPM and B4PYMPM) differ only in the nitrogen position of their lateral pyridine rings.[1] We find that the formation of an ordered,face-on molecular packing in B4PYMPM is beneficial to efficient,field-independent charge separation,leading to fill factors above 70% in photovoltaic devices.[2] This is rationalized by a comprehensive computational protocol showing that,compared to the more amorphous and isotropically oriented B2PYMPM,the higher structural order in face-on B4PYMPM molecules leads to more delocalized CT ***,we find no correlation between the quantum efficiency of free charge carrier radiative recombination and the bound or unbound nature of the CT *** work highlights the importance of structural ordering at donor-acceptor interfaces for efficient free carrier generation and shows that less bound CT states do not preclude efficient radiative recombination.[3]

关键词： Charge-transfer states molecular packing exciton dissociation energy landscape non-radiative voltage losses

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Nanomanufacturing and Metrology 2021年第3期4卷 165-174页

作者： Xinrui Cao Patrick FeBer Stefan Sinzinger Fachgebiet technische Optik Institut flir Mikro-und Nanotechnologien(IMN)MacroNano■Technische Universitat IlmenauIlmenauGermany

Illumination with LEDs is of increasing interest in imaging and *** particular,compared to lasers,LEDs are temporally and spatially incoherent,so that speckle effects can be avoided by the application of ***,LED arrays are qualified due to their high optical output ***,LED arrays have not been widely used for investigating optical effects,e.g.,the Lau *** this paper,we propose the application of an LED array for realizing the Lau effect by taking into account the influence of the coherence properties of illumination on the Lau *** spatially incoherent illumination with the LED array or a single LED,triangular distributed Lau fringes can be *** apply the obtained Lau fringes in the optical lithography to produce analog *** to a single LED,the Lau fringes using the LED array have significantly higher ***,the exposure time in the lithography process is largely reduced.

关键词： Lau effect LED array Lithography Spatial coherence properties of illumination

Investigations on the Corrosion Behaviour and Structural Characteristics of Low Temperature Nitrided and Carburised Austenitic Stainless Steel

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材料热处理学报 2004年第5期25卷 311-315页

作者： D. Mnter H.-J. Spies H. Biermann Chr. Eckstein Department of Materials Engineering Technische Universitat Bergakademie Freiberg 09599 Freiberg/ GermanyDepartment of Materials Engineering Technische Universitat Bergakademie Freiberg 09599 Freiberg/ GermanyDepartment of Materials Engineering Technische Universitat Bergakademie Freiberg 09599 Freiberg/ GermanyCorrosion laboratory Steel-Centre-Freiberg (SZF) Research centre of the Technische Universitat Bergakademie Freiberg 09599 Freiberg/ Germany

The wear resistance of austenitic stainless steels can be improved by thermo-chemical surface treatment with nitrogen and carbon. However, it is possible that the corrosion resistance will be impaired by the precipitation of chromiumnitrid or -carbide. The present contribution deals with investigations of the corrosion behaviour and structural characteristics of a low temperature nitrided and carburised austenitic stainless steel. The material investigated was AISI 316L (X2CrNiMol7-12-2) austenitic stainless steel. A commercial plasma-nitriding unit (pulsed dc) was used for the nitriding and carburising process. Additional samples were treated by the gasoxinitriding process for a comparison between plasma- and gasoxinitriding. The nitrided and carburised layer of austenitic stainless steel consists of the nitrogen or carbon S-phase (expanded austenite), respectively. X-ray diffraction investigations show the typical shift of the peaks to lower angles, indicating expansion of the fee lattice. Also the X-ray diffraction technique was employed to study the residual stresses in the nitrogen and carbon S-phase. The corrosion behaviour of surface engineered samples was investigated with electrochemical methods. Anodic potentiodynamic polarisation curves were recorded for testing the resistance against general corrosion (in H2SO4) and pitting corrosion (in NaCl).

关键词：奥氏体不锈钢腐蚀低温渗氮低温渗碳残留应力

Challenges and Requirements for the Application of Industry 4.0:A Special Insight with the Usage of Cyber-Physical System

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Chinese Journal of Mechanical Engineering 2017年第5期30卷 1050-1057页

作者： Egon Mueller Xiao-Li Chen Ralph Riedel Department of Factory Planning and Factory Management Technische Universitt Chemnitz

Considered as a top priority of industrial devel- opment, Industry 4.0 （or Industrie 4.0 as the German ver- sion） has being highlighted as the pursuit of both academy and practice in companies. In this paper, based on the review of state of art and also the state of practice in dif- ferent countries, shortcomings have been revealed as the lacking of applicable framework for the implementation of Industrie 4.0. Therefore, in order to shed some light on the knowledge of the details, a reference architecture is developed, where four perspectives namely manufacturing process, devices, software and engineering have been highlighted. Moreover, with a view on the importance of Cyber-Physical systems, the structure of Cyber-Physical System are established for the in-depth analysis. Further cases with the usage of Cyber-Physical System are also arranged, which attempts to provide some implications to match the theoretical findings together with the experience of companies. In general, results of this paper could be useful for the extending on the theoretical understanding of Industrie 4.0. Additionally, applied framework and proto- types based on the usage of Cyber-Physical Systems are also potential to help companies to design the layout of sensor nets, to achieve coordination and controlling of smart machines, to realize synchronous production with systematic structure, and to extend the usage of information and communication technologies to the maintenance scheduling.

关键词： Industrie 4.0 - Internet of Things Cyber-Physical System Smart factory Reference architectureIntelligent sensor nets Robot control Synchronousproduction

Constrained crystals deep convolutional generative adversarial network for the inverse design of crystal structures

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npj Computational Materials 2021年第1期7卷 588-594页

作者： Teng Long Nuno M.Fortunato Ingo Opahle Yixuan Zhang Ilias Samathrakis Chen Shen Oliver Gutfleisch Hongbin Zhang Institute of Materials Science Technische Universität DarmstadtDarmstadtGermany

Autonomous materials discovery with desired properties is one of the ultimate goals for materials science,and the current studies have been focusing mostly on high-throughput screening based on density functional theory calculations and forward modeling of physical properties using machine *** the deep learning techniques,we have developed a generative model,which can predict distinct stable crystal structures by optimizing the formation energy in the latent *** is demonstrated that the optimization of physical properties can be integrated into the generative model as on-top screening or backward propagator,both with their own *** the generative models on the binary Bi-Se system reveals that distinct crystal structures can be obtained covering the whole composition range,and the phases on the convex hull can be reproduced after the generated structures are fully relaxed to the *** method can be extended to multicomponent systems for multi-objective optimization,which paves the way to achieve the inverse design of materials with optimal properties.

关键词： properties crystal inverse

Dynamical behavior of a mobile system with two degrees of freedom near the resonance

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Acta Mechanica Sinica 2011年第1期27卷 7-17页

作者： Klaus Zimmermann Igor Zeidis Faculty of Mechanical Engineering Technische Universitaet Ilmenau

The design of mobile robots that can move without wheels or legs is an important engineering and technological ***-propelling mechanisms consisting of a body that has contact with a rough surface and moveable internal masses are *** models of such systems are presented in this ***,a model of a vibration driven robot that moves along a rough horizontal plane with isotropic dry friction is *** is shown that by changing the off-resonance frequency detuning in sign,one can control the direction of motion of the *** addition,a locomotion system which moves in an environment with anisotropic viscous friction is *** all models,the method of averaging to obtain an algebraic equation for the steady-state＂average＂velocity of the system is used. Prototypes were constructed to compare the theoretical results with experimental ones.

关键词： Dynamics Friction Resonance Vibrationdriven systems

Data-driven analysis of chemicals,proteins and pathways associated with peanut allergy:from molecular networking to biological interpretation

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Food Science and Human Wellness 2024年第3期13卷 1322-1335页

作者： Emmanuel Kemmler Julian Braun Florent Fauchère Sabine Dölle-Bierke Kirsten Beyer Robert Preissner Margitta Worm Priyanka Banerjee Institute for Physiology Charité-University Medicine BerlinBerlin 10115Germany Member of the KFO339 FOOD@Berlin 10115Germany Si-M/“Der Simulierte Mensch”a science framework of technische universität Berlin and Charité-universitätsmedizin Berlin Berlin 10115Germany Charité-universitätsmedizin Berlin corporate member of Freie Universität BerlinHumboldt-Universität zu Berlinand Berlin Institute of HealthBerlin 10115Germany Division of Allergy and Immunology Department of DermatologyVenerology and AllergyCharité-Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt-Universität zu BerlinBerlin 10115Germany Pediatrics Campus VirchowCharité-University Medicine BerlinBerlin 10115Germany

Peanut allergy is majorly related to severe food induced allergic *** food including cow's milk,hen's eggs,soy,wheat,peanuts,tree nuts(walnuts,hazelnuts,almonds,cashews,pecans and pistachios),fish and shellfish are responsible for more than 90%of food ***,we provide promising insights using a large-scale data-driven analysis,comparing the mechanistic feature and biological relevance of different ingredients presents in peanuts,tree nuts(walnuts,almonds,cashews,pecans and pistachios)and ***,we have analysed the chemical compositions of peanuts in different processed form raw,boiled and *** the data-driven approach we are able to generate new hypotheses to explain why nuclear receptors like the peroxisome proliferator-activated receptors(PPARs)and its isoform and their interaction with dietary lipids may have significant effect on allergic *** results obtained from this study will direct future experimeantal and clinical studies to understand the role of dietary lipids and PPARisoforms to exert pro-inflammatory or anti-inflammatory functions on cells of the innate immunity and influence antigen presentation to the cells of the adaptive immunity.

关键词： Allergy informatics Knowledge-graph Data analysis Food allergy Peroxisome proliferator-activated receptors Fatty acids

Industrialization,Efficiency and Social Housing:Sustainable Prefabrication for the Colombian Social and Cultural Context

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Journal of Civil Engineering and Architecture 2024年第2期18卷 92-99页

作者： Alejandro Restrepo Montoya Faculty of Architecture technische Universität München TUMMunich 80333Germany

This research aims to generate processes of industrialization and qualification of social housing in Colombia through prefabrication,low energy consumption and high environmental quality to reduce the current deficit and improve the quality of life in communities with fewer economic *** coordination and the use of materials with thermal behaviors,appropriate to the country’s climatic characteristics,reduce production costs,avoid waste and improve the architectural and environmental quality of social *** cooling strategies,such as controlling solar incursion and generating natural cross ventilation eliminate energy consumption and allow reaching desired standards of *** a context in which traditional construction systems have still not resolved the social housing deficit in Colombia and which generate high costs for energy consumption in the search for thermal comfort,industrialized and efficient construction with high environmental quality provides solutions according to the economic,geographic,social and cultural context in Colombia.

关键词： Efficiency industrialization social housing sustainability low energy consumption

Ad-hoc combination and analysis of heterogeneous and distributed spatial data for environmental monitoring-design and prototype of a web-based solution

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International Journal of Digital Earth 2018年第1期11卷 79-94页

作者： Stefan Wiemann Pierre Karrasch Lars Bernard Chair of Geoinformatics Technische Universität DresdenDresdenGermany

With regard to a multi-dimensional and multi-facetted implementation of the vision of a Digital Earth,capabilities to combine and analyze heterogeneous spatial data sources on the web are becoming increasingly *** this article,an online system is conceptualized and implemented to facilitate spatial data analysis and decision making specifically for environmental *** supports a dynamic search and binding of suitable geoprocessing functionality with respect to the given input data and target *** patterns are used to create an application-oriented abstraction layer on top of generic geoprocessing services available on the *** an application scenario the determination and quality assessment for water body structures is *** this use case authoritative data,remote sensing imagery and citizen science data gets combined to gain a comprehensive picture of the various spatial,temporal and thematic aspects influencing the quality of inland *** prototypical implementation makes use of open standards to facilitate the integration with existing spatial data infrastructures.

关键词： Geoprocessing geoprocessing pattern water quality spatial information infrastructure