Dr. Falk Kemper Profile

Dr. Falk Kemper

at Fraunhofer IOF

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Publications (6)

Proceedings Article | 12 July 2023 Open Access

Design and analysis of filter assemblies for the LSTM instrument

Matthias Mohaupt, Christian Scheffler, Falk Kemper, Gerd Harnisch, Max Henning, Andreas Rahm, Olivier Sengenès, Bruno Badoil, Pierre-Olivier Antoine, Emilie STeck

Proceedings Volume 12777, 127776C (2023) https://doi.org/10.1117/12.2691124

KEYWORDS: Tunable filters, Optical filters, Interfaces, Design and modelling, Adhesives, Astronomical imaging, Vibration, Spectral response, Short wave infrared radiation, Equipment

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LSTM, funded by the EU and ESA, is part of Copernicus, the European Union's Earth observation program for global monitoring. It is one of the six new missions, expanding the capabilities of the current Copernicus space component. The Copernicus Land Surface Temperature Monitoring, LSTM, mission carries a high spatial-temporal resolution thermal infrared sensor to provide observations of land-surface temperature. The mission responds to priority requirements of the agricultural user community for improving sustainable agricultural productivity at field-scale in a world of increasing water scarcity and variability. Land-surface temperature measurements and derived evapotranspiration are key variables to understand and respond to climate variability, manage water resources for agricultural production, predict droughts, and to address land degradation, natural hazards such as fires and volcanoes, coastal and inland water management as well as urban heat island issues [1]. The LSTM satellite is designed and build by Airbus DS in Madrid, while the development and production of the advanced technology instrument is carried out by Airbus DS in Toulouse. The detector plane filter (DPF) assemblies for the SWIR and VIS detector and the filter assembly for intermediate plane filters VNIR (IPF-VNIR) are developed, manufactured, integrated, and tested by Fraunhofer IOF. Optic Balzers Jena (OBJ) is the responsible subcontractor for the VNIR/SWIR filter assemblies and will provide the optical filter coatings. The design of filter assemblies for the detector plane filters of SWIR detector (DPF-SWIR) is developed. The filter assemblies consist of a lower frame and upper frame. Four single filter substrates coated with the bandpass filter layers are integrated into the lower frame. The upper and lower mask apertures are integrated into the upper and lower frame. The design of DPF-SWIR filter assemblies was analyzed by finite element (FE) analysis. The mechanical loads of sine and random vibration and shock are calculated. The modal analysis shows the meet of requirements of first eigenfrequency. The mechanical loads of interface imperfections are analyzed. The thermal loads are also analyzed, in combination with interface mechanical loads. In sum 21 load cases are investigated.

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Proceedings Article | 5 March 2021 Presentation + Paper

Inkjet printing of dielectric layers with high relative permittivity for digital microfluidics

T. Schönfelder, F. Kemper, L. Pohle, M. Reif, M. Tienken, E. Beckert, A. Tünnermann

Proceedings Volume 11637, 1163708 (2021) https://doi.org/10.1117/12.2578507

KEYWORDS: Dielectrics, Printing, Microfluidics, Inkjet technology, Silver, Nanoparticles, Lab on a chip, Electrodes, Ultraviolet radiation, Safety

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Proceedings Article | 5 March 2021 Presentation + Paper

Inkjet-printing of 3D optical systems

Falk Kemper, Maximilian Reif, Sabrina Wolleb, Thomas Schönfelder, Lisa Pohle, Erik Beckert, Ulrike Schulz, Andreas Tünnermann

Proceedings Volume 11683, 116830D (2021) https://doi.org/10.1117/12.2578404

KEYWORDS: 3D printing, Optical components, Optics manufacturing, Printing, Geometrical optics, Visible radiation, Surface roughness, Standards development, Polymers, Plasma treatment

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Proceedings Article | 4 March 2019 Presentation

Handy-LOC: a lab-on-a-chip system with integrated ink-jet printed organic semiconductor detection elements (Conference Presentation)

Sebastian Schattschneider, Falk Kemper, Erik Beckert, Zhe Shu, Peter Miethe, Andreas Willems, Holger Becker, Claudia Gärtner

Proceedings Volume 10875, 108750M (2019) https://doi.org/10.1117/12.2512778

KEYWORDS: Lab on a chip, Organic semiconductors, System integration, Microfluidics, Control systems, Liquids, Diagnostics, Life sciences, Luminescence, Fluorescence spectroscopy

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Proceedings Article | 4 March 2019 Presentation + Paper

Inkjet printing of microlens arrays on large, lithographic structured substrates

Erik Beckert, Falk Kemper, Peter Schreiber, Maximilian Reif, Peter Dannberg, Sophie Sauva

Proceedings Volume 10930, 109300C (2019) https://doi.org/10.1117/12.2507605

KEYWORDS: Printing, Inkjet technology, Polymers, Lithography, Calibration, Microlens array, Manufacturing, Optical lithography, Optics manufacturing, Spherical lenses

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Proceedings Article | 13 March 2013 Paper

Inkjet printed structures for smart lab-on-chip systems

E. Beckert, R. Eberhardt, Oliver Pabst, Falk Kemper, Zhe Shu, Andreas Tünnermann, Jolke Perelaer, Ulrich Schubert, Holger Becker

Proceedings Volume 8615, 86150E (2013) https://doi.org/10.1117/12.2002356

KEYWORDS: Printing, Inkjet technology, Electrodes, Actuators, Electroactive polymers, Silver, Polymers, Microfluidics, Gold, Plasma

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Showing 5 of 6 publications

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