Gleißner, U.

Hanemann, T.

Hobmaier, J.

KITopen

Polymers with Customizable Optical and Rheological Properties based on an Epoxy Acrylate based Host-Guest System Uwe Gleißner, Jost Hobmaier, Thomas Hanemann Laboratory for Materials Processing Department of Microsystems Engineering - IMTEK University of Freiburg 28.09.2015 Uwe Gleißner - 2 - Planar Optronic Systems Collaborative Research Center   Polymer-based sensor network  Large-area foils  No electronic components  Measurement of ¾ Temperature ¾ Strain   Sub-projects  ¾ Suitable materials ¾ Construction of fiber optics ¾ Light sources ¾ Spectrometers / detectors polymer foil [http://www.planos.uni-hannover.de] 28.09.2015 Uwe Gleißner - 3 - Planar Optronic Systems Why polymers?  Modifiable to application  Good processability ¾ Hot embossing ¾ NIL ¾ Inkjet-printing  ¾ …  Large-scale systems possible  Thin layers = economic polymer foil [http://www.planos.uni-hannover.de] 28.09.2015 Uwe Gleißner - 4 - Planar Optronic Systems Tailored polymers  Adjusting viscosity    Polymerization by UV-light   Adjusting refractive indices   Low optical damping    Continuous operating temperature 28.09.2015 Uwe Gleißner - 5 - Planar Optronic Systems Tailoring viscosity  Comonomer content  Different shaping / molding processes ¾ Inkjet printing ≈ 10 mPa·s (@ 70 °C) ¾ Offset printing ≈ 200 mPa·s (@ RT) ¾ Spin coating ≈ 100 mPa·s – 1000 mPa·s (@ RT)  Heidelberg Speedmaster SM 52 [www.heidelberg.com] Dimatix DMP 2831 [www.electronic-data.com] 28.09.2015 Uwe Gleißner - 6 - Planar Optronic Systems Adjustment of refractive indices  Comonomer / dopant  Waveguides ¾ Core ¾ Cladding  Coupling structures Computed 3D model of printed waveguide (Wolfer et al, Procedia Technology, 2013) 28.09.2015 Uwe Gleißner - 7 - Planar Optronic Systems Materials  Main monomer ¾ Epoxy Methacrylate 97-053 (RAHN)  Comonomer ¾ Benzyl methacrylate   Dopant ¾ Phenanthrene  UV initiator ¾ Phosphine oxide   Thermal initiator ¾ Lauroyl peroxide 28.09.2015 Uwe Gleißner - 8 - Planar Optronic Systems Radical polymerization 28.09.2015 Uwe Gleißner - 9 - Planar Optronic Systems Mixture preparation  Materials are mixed ¾ up to 30.000 rpm ¾ ambient conditions  Ultrasonic bath    Viscosity measurement ¾ Cone and plate rheometer  IKA T10 basic  [http://static.coleparmer.com] Bohlin Rheometer CVO 50  [http://mb.uni-paderborn.de/] 28.09.2015 Uwe Gleißner - 10 - Planar Optronic Systems Sample preparation  For refractive index ¾ Casting mold (silicon) ¾ Glass plates ¾ Fluorine ethylene propylene (FEP) foil  Oxygen inhibition  casting mold 28.09.2015 Uwe Gleißner - 11 - Planar Optronic Systems Sample preparation  For refractive index ¾ Casting mold (silicon) ¾ Glass plates ¾ Fluorine ethylene propylene (FEP) foil  Oxygen inhibition   mold assembly 28.09.2015 Uwe Gleißner - 12 - Planar Optronic Systems Sample preparation  For refractive index ¾ Casting mold (silicon) ¾ Glass plates ¾ Fluorine ethylene propylene (FEP) foil  Oxygen inhibition    Polymerization ¾ Wavelength 405 nm Hönle UV-Spot 100 [www.hoenle.de] mold assembly 28.09.2015 Uwe Gleißner - 13 - Planar Optronic Systems Sample preparation  For refractive index ¾ Casting mold (silicon) ¾ Glass plates ¾ Fluorine ethylene propylene (FEP) foil  Oxygen inhibition    Polymerization ¾ Wavelength 405 nm  mold assembly polymerized sample 28.09.2015 Uwe Gleißner - 14 - Planar Optronic Systems Sample characterization  Refractive indices ¾ Abbe-refractometer ¾ Multi-wavelength   Optical damping ¾ UV-Vis spectroscopy   Differential scanning calorimetry (DSC) ¾ Glass transition temperature ATAGO DR-M2/1550 [www.atagorus.ru]  Varian Cary 50 UV-Vis [www.speciation.net]refractometer surface 28.09.2015 Uwe Gleißner - 15 - Planar Optronic Systems Viscosity of Epoxy Methacrylate 97-053 + BMA  Temperature dependency  Newtonian behavior 28.09.2015 Uwe Gleißner - 16 - Planar Optronic Systems Viscosity of Epoxy Methacrylate 97-053 + BMA  Dependence on BMA   Dependence on phenanthrene 28.09.2015 Uwe Gleißner - 17 - Planar Optronic Systems Refractive index  Polymerized samples  Phenanthrene increases refractive index ¾   0 wt%: 1.568 – 1.570 ¾   5 wt%: 1.575 – 1.577 ¾ 10 wt%: 1.585 – 1.586  BMA has low influence 28.09.2015 Uwe Gleißner - 18 - Planar Optronic Systems Data combined  Viscosity ¾ Refractive index  Refractive index ¾ Viscosity  Easy lookup  28.09.2015 Uwe Gleißner - 19 - Planar Optronic Systems Abbe number  Polymerized samples  Phenanthrene decreases Abbe number  BMA has low influence 28.09.2015 Uwe Gleißner - 20 - Planar Optronic Systems Optical damping of Epoxy Methacrylate (EM) + BMA  Independent on BMA  Dependent on phenanthrene  28.09.2015 Uwe Gleißner - 21 - Planar Optronic Systems Printed “waveguide”  Ink-jet ¾ width appr. 180 μm ¾ height appr. 40 μm  Image of inkjet-printed waveguide taken by confocal microscopy [Wolfer et al., Procedia Technology, 2014] 28.09.2015 Uwe Gleißner - 22 - Planar Optronic Systems Spincoated waveguide  width appr. 10 μm  height appr. 5 μm  monomode   Output facet of a fabricated single-mode inverted rib wageguide [Gleissner et al., Eurosensors Conference, 2015] 28.09.2015 Uwe Gleißner - 23 - Planar Optronic Systems Self writing waveguide  Laser writing through monomer  Between two fibers  Low loss connection  Schematic of the different process steps of the self-written waveguide formation [Günther et al., Optics Letters, 2015] 28.09.2015 Uwe Gleißner - 24 - Planar Optronic Systems Summary  Viscosity adjustable in a wide range ¾ 1.5 Pa·s > η > 8 mPa·s (@ 20 °C) ¾ Suitable for different shaping methods ¾ Range can be extended  28.09.2015 Uwe Gleißner - 25 - Planar Optronic Systems Summary  Viscosity adjustable in a wide range ¾ 1.5 Pa·s > η > 8 mPa·s (@ 20 °C) ¾ Suitable for different shaping methods ¾ Range can be extended  Refractive index tunable ¾ 1.570 < n < 1.585 (@ 20 °C, 589 nm) ¾ Independent of viscosity  28.09.2015 Uwe Gleißner - 26 - Planar Optronic Systems Summary  Viscosity adjustable in a wide range ¾ 1.5 Pa·s > η > 8 mPa·s (@ 20 °C) ¾ Suitable for different shaping methods ¾ Range can be extended  Refractive index tunable ¾ 1.570 < n < 1.585 (@ 20 °C, 589 nm) ¾ Independent of viscosity  Dispersion  ¾ Abbe numbers: 29 to 38  Optical damping ¾ As low as 0.15 dB/mm @600 nm    The PlanOS science team (alphabetical order): Acknowledgements Meriem Akin Thomas Hanemann Welm Pätzold Laszlo Sajti Florian Bär Meike Hofmann Ann Britt Petermann Wolfgang Schade Konrad Bethmann Christian Kelb Elke Pichler Thomas Schmidt Tobias Birr Ann-Katrin Kniggendorf Oswald Prucker Anne-Katrin Schuler Patrick Bollgrün Michael Köhring Torsten Rabe Andreas Schwenke Kort Bremer Martin Körner Maik Rahlves Stanislav Shermann Boris Chichkov Jan Gerrit Korvink Holger Reinecke Yixiao Wang Ayhan Demircan Wolfgang Kowalsky Carsten Reinhardt Nan Wang Sebastian Dikty Dario Mager Eduard Reithmeier Ulrike Willer Sebastian Döhring Uwe Morgner Maher Rezem Tim Wolfer Henrik Ehlers Claas Müller Lutz Rissing Merve Wollweber Ludmila Eisner Gregor Osterwinter Detlef Ristau Marc Wurz Melanie Gauch Torsten Otto Bernhard Roth Yanfen Xiao Uwe Gleißner Ludger Overmeyer Raimund Rother Hans Zappe Axel Günther Malwina Pajestka Jürgen Rühe Urs Zywietz Funded by German Research Foundation  (Deutsche Forschungsgemeinschaft) 

Polymers with customizable optical and rheological properties based on an epoxy acrylate based host-guest system

https://publikationen.bibliothek.kit.edu/240102190/3816907

Polymers with customizable optical and rheological properties based on an epoxy acrylate based host-guest system

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