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Logo: SFB/TRR 123 "PlanOS"
Logo Leibniz Universität Hannover
Logo: SFB/TRR 123 "PlanOS"
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Project Block B

Projektbereich B

B01 - Flexo- and Inkjet-Printing of Multimode-Waveguides

 

Supervisor:

Prof. Overmeyer und Prof. Korvink

Researcher:

Tim Wolfer und Patrick Bollgrün

Duration:

2013-2016

Funded by:

DFG

Brief description:

How can we print optical waveguides? This question is investigated by Professors and young scientists from Freiburg and Hannover. The task of project B01 is to manufacture multimodal waveguides with a width between ten and several hundred micrometers, which are suitable of guiding light with a high intensity. For this, the advantages of two printing processes are used: flexography with its high throghput and low costs per unit and inkjet printing with a high variability and resolution.

 

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B02 - Nanoimprint lithography of singlemode waveguides

 

Supervisor:

Prof. Müller

Researcher:

Dr. Jing Becker

Duration:

2013-2016

Funded by:

DFG

Brief description:

NIL (nanoimprint lithography), a fabrication technique to obtain submicrometer structures, and HE (hot embossing) for fabrication of microstructures are nowadays differenciated by definition in terms of manufacturing. Integrating both fabrication techniques into a single process enables the realization of optical components with feature sizes across several scales. In combination with a dedicated process scheme without any residual polymer layer and additionally the reaction casting technique, optical components with several optically interacting levels become feasible.

 

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B03 - Polymer processing with femtosecond lasers

 

Supervisor:

Prof. Morgner und Dr. Reinhardt

Researcher:

Welm Pätzold und Urs Zywietz

Duration:

2013-2016

Funded by:

DFG

Brief description:

This sub-project focusses on the fabrication of 2D and 3D optical waveguides and waveguide-systems in different polymers via structuring by femtosecond lasers. Two complementary approaches are being pursued: Direct writing of waveguides in the volume of polymers by means of material modifications and the structuring of waveguides through two-photon polymerization.

 

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B04 - Production of micro-optical components

 

Supervisor:

Prof. Reithmeier und Dr. Rahlves

Researcher:

Axel Günther

Duration:

2013-2016

Funded by:

DFG

Brief description:

Aim of this project is the design and fabrication of micro-optical structures for guiding light inside thin polymer foils as well as coupling light into and out of the foil. To realize a large area sensor network within PlanOS, a perfect interaction between all optical devices such as light sources, sensors and detectors is of great importance. Therefore, micro-optical structures are necessary, which connect all components to the sensor foil. One of the key issues is to increase the coupling efficiency of these linking structures as much as possible to gain maximum performance of the sensor networks.

 

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B05 - Functionalized surfaces and multilayers

 

Supervisor:

Prof. Ristau

Researcher:

Melanie Gauch

Duration:

2013-2016

Funded by:

DFG

Brief description:

In subproject B05 new materials as adhesive and protection layers for polymer substrates will be developed. As an innovative approach, continuous transitions from a polymer to an inorganic transparent material shall be realized on the basis of ion deposition processes such as ion beam sputtering or ion assisted deposition will be investigated. In this context, the sputtered coatings can provide optical functions (e.g. filtering, antireflection) and will be deposited on single components as well as on the entire foil.

 

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B06 - Lamination via chemical bonding reactions.

 

Supervisor:

Prof. Rühe

Researcher:

Anna Schuler and Raimund Rother

Duration:

2013-2016

Funded by:

DFG

Brief description:

Micro-optical foils consist of multiple layers that can be connected e.g. by lamination. However, this process demands a certain compatibility of the given foils, which cannot always be guaranteed due to their different tasks. Therefore, methods have to be developed that allow lamination via chemical bonding reactions. These methods shall furthermore be combined with micro-structuring.

 

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