TY  - JOUR
A1  - Zyla, Gordon
A1  - Kovalev, Alexander
A1  - Gurevich, Evgeny L
A1  - Esen, Cemal
A1  - Liu, Ying
A1  - Lu, Yongfeng
A1  - Gorb, Stanislav
A1  - Ostendorf, Andreas
T1  - Structural colors with angle-insensitive optical properties generated by Morpho-inspired 2PP structures
JF  - Applied Physics A
N2  - This paper describes how two-photon polymerization was used to generate biomimetic nanostructures with angle-insensitive coloration inspired by the blue butterflies of Morpho. Less angle dependence was achieved by engineering the structures with a certain degree of disorder, which delimited them from classical photonic crystals. Variations in the processing parameters enabled the color hue to be controlled. In this context, blue, green, yellow, and brown structures were demonstrated. Reflection spectra of the structures were simulated and studied experimentally in a broad range of incident angles. Additionally, a molding technique was performed as a potential scale-up strategy. The application of such biomimetic structures is discussed.
Y1  - 2020
U6  - http://dx.doi.org/10.1007/s00339-020-03931-6
VL  - 126
IS  - 9
SP  - 740
EP  - 740
ER  - 
TY  - JOUR
A1  - Zyla, Gordon
A1  - Surkamp, Nils
A1  - Gurevich, Evgeny L
A1  - Esen, Cemal
A1  - Klehr, Andreas
A1  - Knigge, Andrea
A1  - Hofmann, Matin R
A1  - Ostendorf, Andreas
T1  - Two-photon polymerization with diode lasers emitting ultrashort pulses with high repetition rate
JF  - Optics Letters
N2  - In this Letter, we investigate the resolution of two-photon polymerization (2PP) with an amplified mode-locked external cavity diode laser with adjustable pulse length and a high repetition rate. The experimental results are analyzed with a newly developed 2PP model. Even with low pulse peak intensity, the produced structural dimensions are comparable to those generated by traditional 2PP laser sources. Thus, we show that a compact monolithic picosecond laser diode without amplification and with a repetition rate in the GHz regime can also be applied for 2PP. These results show the high application potential of compact mode-locked diode lasers for low-cost and compact 2PP systems.
Y1  - 2020
U6  - http://dx.doi.org/10.1364/OL.401738
VL  - 45
IS  - 17
SP  - 4827
EP  - 4830
ER  - 
TY  - JOUR
A1  - Zyla, Gordon
A1  - Kovalev, Alexander
A1  - Heisterkamp, Silas
A1  - Esen, Cemal
A1  - Gurevich, Evgeny L.
A1  - Gorb, Stanislav
A1  - Ostendorf, Andreas
T1  - Biomimetic structural coloration with tunable degree of angle-independence generated by two-photon polymerization
JF  - Opt. Materials Express
Y1  - 2019
VL  - 9
SP  - 2630
EP  - 2639
ER  - 
TY  - JOUR
A1  - Zyla, Gordon
A1  - Kovalev, Alexander
A1  - Grafen, Markus
A1  - Gurevich, Evgeny L.
A1  - Esen, Cemal
A1  - Ostendorf, Andreas
A1  - Gorb, Stanislav
T1  - Generation of bioinspired structural colors via two-photon polymerization
JF  - Scientific Reports
Y1  - 2017
VL  - 7
SP  - 17622
ER  - 
TY  - JOUR
A1  - Guo, Qingchuan
A1  - Ghadiri, Reza
A1  - Weigel, Thomas
A1  - Aumann, Andreas
A1  - Gurevich, Evgeny L.
A1  - Esen, Cemal
A1  - Medenbach, Olaf
A1  - Cheng, Wei
A1  - Chichkov, Boris
A1  - Ostendorf, Andreas
T1  - Comparison of in Situ and ex Situ Methods for Synthesis of Two-Photon Polymerization Polymer Nanocomposites
JF  - Polymers
Y1  - 2014
U6  - http://dx.doi.org/10.3390/polym6072037
SN  - 2073-4360
VL  - 6
SP  - 2037
EP  - 2050
ER  -