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December 2013 - present
October 2012 - April 2013
May 2022 - September 2022
Publications
Publications (14)
Evaluating published results from ice adhesion measurements to characterise the applicability of surface coatings, usually a large variation of the published properties and a high scattering of these values attracts attention. Moreover ice adhesion is known as a highly susceptible parameter regarding temperature treatment, what additionally contrib...
In this work, the mechanism of the corrosion behavior of laser‐treated aluminum is studied. Two different laser techniques are used to fabricate the samples, direct laser interference patterning (DLIP) and direct laser writing (DLW), using nanosecond laser sources. The DLIP treatment uses a two‐beam optical configuration producing line‐like periodi...
Um den Campus im Zeitalter von digitalen und hybriden Lehrveranstaltungen wieder attraktiv zu machen, wird ein agiles Lehrformat vorgestellt, das die kooperative Problembewältigung durch projektbasiertes Lernen und agiles Projektmanagement ins Zentrum stellt. Hierzu werden zunächst allgemein die Elemente agilen Projektmanagements vorgestellt und an...
In this study, a comprehensive analysis of the pH-dependent contact angles, freezing temperatures and ice adhesion on aluminium samples is presented. It is not yet known whether externally applied electric fields or charged interfaces sufficiently affect the heterogeneous freezing and ice adhesion in order to provide technical solutions for refrige...
The ferro‐, pyro‐ and piezoelectric properties of poly(vinylidene fluoride ‐ co ‐ trifluoroethylene) P(VDF‐TrFE) have created interest with regard to its application in aqueous and ambient surroundings for sensors, functional coatings and in the field of life sciences. P(VDF‐TrFE) thin films are usually applied via spin‐coating, but dip‐coating wou...
A novel Rutherford backscattering spectrometry (RBS) method is presented to investigate the interface between a solid surface and a surrounding liquid. The introduced measurement system allows to observe and quantify adsorption at the solid–liquid interface and the formation of the electrochemical double layer (EDL). BaCl2 as a bicomponent electrol...
Die Erfindung betrifft einen Wärmeübertrager für ein Fahrzeug sowie ein Fahrzeug, welches solch einen Wärmeübertrager umfasst. Es ist vorgesehen, dass ein Wärmeübertrager für ein Fahrzeug bereitgestellt wird. Solch ein Wärmeübertrager umfasst dabei einen zumindest teilweise beschichteten Grundkörper aus Metall oder einen zumindest teilweise beschic...
Active deicing of technical surfaces, such as for wind turbines and heat exchangers, currently requires the usage of heat or chemicals. Passive coating strategies that postpone the freezing of covering water would be beneficial in order to save costs and energy. One hypothesis is that pyroelectric active materials can achieve this because of the su...
We report on a new versatile experimental setup for in situ Rutherford backscattering spectrometry at solid-liquid interfaces which enables investigations of electric double layers directly and in a quantitative manner. A liquid cell with a three-electrode arrangement is mounted in front of the beam line, and a thin Si3N4 window (thickness down to...
In our experiments, the icing temperature of small water volumes placed on different pyroelectric single crystals (SrxBa1−xNb2O6, LiNbO3, and LiTaO3) was determined using two measurement setups: (1) the sessile droplet and (2) ring system method. In the first method, a free-standing water droplet was exposed to several external factors in the air e...
In this work a new approach for ice repellent coatings is presented. It was shown that the coatings cause a decrease or increase in the freezing temperature of water depending on the alignment of an external electric field. For this coating the commonly used pyroelectric polymer polyvenylidene fluoride was deposited as a thin film on glass. The sam...
Electrolytic codeposition was employed as a low-cost alternative process to fabricate composite coatings containing Mn3O4 particles in a Co matrix for potential applications in solid oxide fuel cells. The effects of codeposition parameters on the Mn3O4 particle incorporation, cathode current efficiency, and coating uniformity were investigated usin...
