Mathias Schröder

Fraunhofer Institute for Ceramic Technologies and Systems | IKTS

The transport sector, and thus also rail transport, needs to be completely decarbonised by 2050 at the latest. Considering the long service life of rail vehicles, this goal means enormous innovation and growth potential for the vehicle and supplier industry of railway technology in the coming years. This contribution presents the first results of a...

The GREENPEG project, which is funded by the European Commission Horizon 2020 'Climate action, environment, resource efficiency and raw mate-rials' programme, aims to develop multimethod exploration toolsets for the identification buried pegmatite-type ore deposits in Europe. The consortium of the 4 ½ year project, which started in May 2020, involv...

The database presented in this study has been acquired during the SOuth west FOGs 3D (SOFOG3D) experiment for processes study. This international campaign led by Météo-France during the winter 2019–2020 aimed at deploying a unique network of both in situ and remote sensing measurements in order to document spatial and temporal variabilities of fog...

The GREENPEG project, which is funded by the European Commission Horizon 2020 ‘Climate action, environment, resource efficiency and raw materials’ programme, aims to develop multi-method exploration toolsets for the identification of European, buried, small-scale (0.01-5 million m3) pegmatite ore deposits of the Nb-Y-F (NYF) and Li-Cs-Ta (LCT) chem...

The height of the mixing layer is a significant parameter for describing the dynamics of the planetary boundary layer (PBL), especially for air quality control and for the parametrizations in numerical modeling. The problem is that the heights of the mixing layer cannot be measured directly. The values of this parameter are depending both on the ap...

On March 10th, 2020 our second workshop "Methods for measuring and forecasting the air quality (especially in metropolitan areas)" takes place at the BEST WESTERN Hotel am Schlosspark in 09577 Lichtenwalde. The workshop offers a platform for the exchange of experience with national and European players, taking into account already existing scienti...

In this talk, the single channel microwave radiometer MTP-5, its applications for urban areas as well as examples will be presented. The MTP-5 is a remote sensing instrument that measures microwave radiation emitted from the lower 1000 m of the planetary boundary layer (PBL) to obtain temperature profiles of the atmosphere. It uses a uniquely desig...

Wir suchen ab sofort Anwendungsingenieur/ Elektroniker (w / m / d) Unser Unternehmen besitzt eine mehr als 25-jährige Kompetenz in der Realisierung von Forschungs-und Entwicklungsleistungen sowie der Herstellung entsprechender Geräte-und Messtechnik in folgenden Bereichen: - Sensorik zur Messung physikalischer Größen - optische Messtechnik/Spekt...

Besides traditional machining processes, unconventional machining by EDM (Electrical Discharge Machining) is used, especially when precise cavities with complicated shapes are required or hard to machine alloys need to be machined. For the production of a geometrically complicated workpiece, numerous differently shaped electrodes are required due t...

Introduction to the single-channel microwave radiometer MTP-5, measuring temperature profile of the atmosphere/PBL and its applications (aviation, air quality, urban climate, ecology, research, nowcasting ...)

Wastewater treatment plants are the main release sources of pharmaceutical compounds present in surface waters. Even at low concentrations, many of these substances have long-term adverse effects on the environment. For an efficient control of pharmaceutical removal, a real-time recognition is a prerequisite. Currently, quantification of such compo...

The global impact of man on the environment causes changes in climate and ultimately in specific parameters of the air or atmosphere. Therefore, new measurement methods, algorithms and methods for characterizing / evaluating air parameters at different heights are required. The workshop therefore serves to present the latest measuring methods and t...

Usually, it is difficult to determine the temperature stratification in the upper part of the planetary boundary layer (ABL) and in the lower atmospheric layer using the traditional observation tools. Routine aerological data have a not dense enough network in terms of the time and distance for the monitoring of the fast processes in the ABL effici...

Contribution to the manufacturer session of ISARS 2018 in Cologne

During the 2017-2018 winter season, the new ground-based multichannel microwave complex has been tested to improve the abilities in retrieval of the temperature and humidity profiles up to 10 km height. This radiometric complex for remote sensing of troposphere meteorological parameters consists of three microwave radiometric receivers operating at...

Ziel des Vorhabens HIGS "Hochintegrierte Ganzzellsensoren für die Umwelt-und Medizintechnik" war die Entwicklung einer neuartigen Generation von Ganzzellsensoren, welche durch die Reaktion lebender Zellen die Bewertung der biologischen Wirkung von biomolekularen oder nichtbiologischen Analyten ermöglichen. Die innovative Lösung soll es weiterhin er...

Here, we report on the photochemical deposition of Rhodamine 6G (Rh6G) and Alexa647 molecules from aqueous and methanolic solution along 180° ferroelectric (FE) domain walls (DWs) of z-cut lithium niobate (LNO) single crystals. Molecules and FE domains were investigated by means of dynamic-mode AFM, piezoresponse force microscopy (PFM), and confoca...

First results of the spectral 2D analysis of biological, fluorescent samples using a new video spectrometer (AOS) are presented (see Fig. 1). An acousto-optical TeO2-crystal can be tuned by ultrasound to act as a narrow, spectral filter for incoming light [1]. The wavelength ranges from 250-800 nm with a spectral resolution higher than 2.5 nm thus...

The electrical impedance properties of UV-illuminated ( λ = 310 nm) charged, conductive domain walls (CDWs) in 5 mol% magnesium-doped lithium niobate (LNO) single crystals are investigated on the nm-length scale using nanoimpedance microscopy (NIM) as well as by comparing the macroscopically measured complex impedance response between multi- and si...

We report on differentiating antiparallel ferroelectric domains in congruent Mg-doped LiNbO3 (Mg:LNO) single crystals through a multiphoton photoluminescence technique. Sample illumination with femtosecond laser pulses at λ = 790 nm results in a broad multiphoton emission spectrum revealing a domain contrast of >3% between virgin and inverted domai...

Ferroelectric domain walls (DWs) are planar interfaces of a few nm thickness that separate areas with different spontaneous polarizations. DWs show electric conductivity under certain conditions [1], e.g. when being illuminated by UV light, and thus are interesting as nanometer-scale optoelectronic devices [2]. We investigate the optical response o...

We investigated multiphoton photoluminescence (PL) occurring in Mg doped LiNbO3 (LNO) and LiTaO3 (LTO) single crystals under a focused 100-fs laser beam at 790 nm. The PL signal always allows differentiating between switched domains and the virgin substrate due to the presence of a PL domain contrast of about 3% and 20% for the LNO and LTO substrat...

Cherenkov second-harmonic generation (CSHG) is a powerful tool for three-dimensional domain wall profiling in ferroic bulk crystals. Here, we apply this noninvasive technique for tracking head-to-head charged domain walls (CDWs) across millimeter-thick ferroelectric single-crystalline lithium niobate. CSHG sensitively reveals the inclination α >0 o...

Ferroic materials play an increasingly important role in novel (nano-)electronic applications. Recently, research on domain walls (DWs) received a big boost by the discovery of DW conductivity in bismuth ferrite (BiFeO3 ) and lead zirconate titanate (Pb(Zrx Ti1−x )O3) ferroic thin films. These achievements open a realistic and unique perspective t...

In this work, Pb(Zr,Ti)O-3 thin films were used to fabricate well-ordered nanodot arrays by means of nanosphere lithography. This technique is based on a two-step etch process that enables excellent control of the fabrication of ordered nanodisc arrays of defined height, diameter, and pitch. Piezoresponse force microscopy was used to investigate bo...

In this work, Pb(Zr,Ti)O3 thin films were used to fabricate well-ordered nanodot arrays by means of nanosphere lithography. This technique is based on a two-step etch process that enables excellent control of the fabrication of ordered nanodisc arrays of defined height, diameter, and pitch. Piezoresponse force microscopy was used to investigate bot...

Ferroic materials play an increasingly important role in novel (nano)electronic devices. Recently, research on domain walls (DWs) receives a big boost by the discovery of DW conductivity (DWC) in BiFeO3 and Pb(ZrxTi1-x)O3 ferroic thin films. Here, it is demonstrated that DWC is not restricted to thin films, but equally applies to millimeter-thick w...

Ferroic materials play an increasingly important role in novel (nano)electronic devices. Recently, research on domain walls (DWs) receives a big boost by the discovery of DW conductivity (DWC) in BiFeO3 and Pb(ZrxTi1-x)O3 ferroic thin films. Here, it is demonstrated that DWC is not restricted to thin films, but equally applies to millimeter-thick w...

In this work, reactive magnetron-sputtered Pb(Zr,Ti)O3thin films were used to fabricate well-ordered nanodot arrays by means of nanosphere lithography (NSL). NSL is based on a two-step etch process by means of, firstly adjusting the diameter of polystyrene spheres in the self-assembled polymeric nanosphere mask using reactive ion etching, and secon...

The invention relates to a structured domain ferroisches element, a method and apparatus for generating and controlling the electric conductivity of the domain walls at room temperature in these elements as well as applications of the element. The object is to provide a domain-structured element, a method and a device for generating and controlling...

The presence of different surface charges and thus different surface reactivities offers the possibility of exploiting domain-structured ferroelectrics as templates for assembling various functional nanostructures. This technique is claimed ferroelectric lithography [1], bearing the power for the controlled bottom-up assembly and integration of dis...

Workshop Research Training Group Nano- and Biotechnologies for Packaging of Electronic Systems

The promising route for assembling metallic and molecular nanostructures