TY - JOUR AU - Kundisch, Dennis AU - von Rechenberg, Tobias ID - 2464 IS - 4 JF - Business & Information Systems Engineering TI - Does the Framing of Progress Towards Virtual Rewards Matter? Empirical Evidence from an Online Community VL - 59 ER - TY - JOUR AU - Meier, Christian AU - Kundisch, Dennis AU - Willeke, Jochen ID - 2465 IS - 2 JF - Business & Information Systems Engineering TI - Is it Worth the Effort? - A Decision Model to Evaluate Resource Interactions in IS Project Portfolios VL - 59 ER - TY - JOUR AU - Matthias, Philipp AU - Schlosser, Florian AU - Hechelmann, Ron-Hendrik AU - Schumm, Gregor AU - Holzhammer, Uwe ID - 24675 JF - BWK Energie-Fachmagazin TI - Sektorkopplung Prozesswärme / Strom in der deutschen Industrie. Integration der erneuerbaren Energien in den Wärmesektor. VL - 70 ER - TY - GEN ED - Moritzer, Elmar ED - Budde, Christopher ED - Hüttner, Matthias ED - Krassmann, Dimitri ID - 25739 TI - Entwicklung einer neuartigen Fügetechnik für Organoblech-Hybridverbindungen ER - TY - GEN AU - Dolzhenko, Irina AU - Rumlich, Dominik ID - 25846 TI - Понять, как они тикают [Verstehen, wie sie ticken]. Interview on CLIL conducted by Ирина Долженко [Irina Dolzhenko] on behalf of sib.fm ER - TY - JOUR AU - Stefszky, Michael AU - Ricken, R. AU - Eigner, Christof AU - Quiring, V. AU - Herrmann, Harald AU - Silberhorn, Christine ID - 26040 JF - Physical Review Applied SN - 2331-7019 TI - Waveguide Cavity Resonator as a Source of Optical Squeezing ER - TY - JOUR AU - Luo, Kai Hong AU - Herrmann, Harald AU - Silberhorn, Christine ID - 26058 JF - Quantum Science and Technology SN - 2058-9565 TI - Temporal correlations of spectrally narrowband photon pair sources ER - TY - JOUR AU - Rütz, Helge AU - Luo, Kai Hong AU - Suche, Hubertus AU - Silberhorn, Christine ID - 26059 JF - Physical Review Applied SN - 2331-7019 TI - Quantum Frequency Conversion between Infrared and Ultraviolet ER - TY - CHAP AB - Selective Laser Sintering (SLS) is an Additive Manufacturing technology, which allows the production of functional polymer parts. Conventionally mainly Nylon 12 (PA 12), Polyamide 11 (PA 11), glass- or aluminum filled materials enable rapid prototyping during the product development process. Those materials do not always meet the requirements for direct production of functional parts by laser sintering. For Direct Manufacturing of functional parts out of required materials and in high quality, the laser sintering process and the material palette needs to be further developed. During this research a laser sintering test equipment for material qualification has been built up. The forthcomings are an optimized software solution, an innovative optical system, an alternative powder coating system and an improved temperature control. The functionality of the test equipment is proved with the standard material PA2200 and two new laser-sintering-materials, Nylon 6 (PA 6) and Polyamide 613 (PA 613), are investigated. The process parameters are derived and mechanical properties are determined by tensile tests. AU - Lohn, Johannes AU - Schmid, Hans-Joachim ID - 26104 T2 - Rapid.Tech – International Trade Show & Conference for Additive Manufacturing TI - Aufbau einer Lasersinter-Versuchsanlage und Verarbeitung neuer Materialien am Beispiel von Polyamid 6 und Polyamid 613 ER - TY - JOUR AB - We study the variation of the adhesion forces between wet TiO2 nanoparticles as a function of their size and the ambient relative humidity. Combining all-atom molecular dynamics and capillary simulations we demonstrate that the linear scaling of the interparticle forces with the particle diameter, well established for microscopic and macroscopic particles, can be extended down to diameters of a few nm. At this size scale, however, the molecular nature of the water adsorbates dictates the adhesion forces both via solvation effects and influencing parameters of analytical capillary models such as the equilibrium particle–particle separation distance and the water/particle contact angle. Moreover, the water surface tension becomes considerably larger than the macroscopic bulk value due to combined effects of thin-film confinement and tight curvature, in a way that strongly depends on humidity and particle size. Taking these effects into proper account, classical capillary equations can be used to predict the interparticle forces even of the smallest particles considered here (4 nm), although the circular approximation fails to reproduce the distance at which the water meniscus breaks. Finally, the transition between the dominating effects at the nanoscopic scale and conventional capillary theory valid at microscopic size scales can be only rationalized if the presence of roughness asperities on the surface of the large particles is explicitly taken into account. AU - Laube, Jens AU - Dörmann, Michael AU - Schmid, Hans-Joachim AU - Mädler, Lutz AU - Colombi Ciacchi, Lucio ID - 26106 JF - The Journal of Physical Chemistry C SN - 1932-7447 TI - Dependencies of the Adhesion Forces between TiO2 Nanoparticles on Size and Ambient Humidity ER -