5. Two-photon polymerization of inorganic-organic polymers for biomedical and microoptical applications

Burmeister, Frank; Steenhusen, Sönke; Houbertz, R.; Asche, TS; Nickel, Jörg; Nolte, Stefan; Tucher, Nico; P, Josten; K, Obel; Wolter, Herbert; Fessel, Sebastian; Am, Schneider; Gärtner, K-H; Beck, Christine; Behrens, Peter; Tünnermann, Andreas; Walles, Heike

doi:10.1515/9783110354324-016

Cited by 6 publications

(3 citation statements)

References 58 publications

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“…Nevertheless, all reflection intensity peaks are clearly in the blue wavelength range. Furthermore, disorder can be induced by the minimal shrinkage of the photosensitive material which depends on the polymerization degree [47]. In this case, the shrinkage causes a local variation of the height for defined structure parts which are more strongly polymerized (compare Figs.…”

Section: (D) and 2h)mentioning

confidence: 99%

Biomimetic structural coloration with tunable degree of angle-independence generated by two-photon polymerization

Zyla¹,

Kovalev²,

Heisterkamp³

et al. 2019

Opt. Mater. Express

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A successful realization of photonic systems with characteristics of the Morpho butterfly coloration is reported using two-photon polymerization. Submicron structure features have been fabricated through the interference of the incident beam and the reflected beam in a thin polymer film. Furthermore, the influence of the lateral microstructure organization on the color formation has been studied in detail. The design of the polymerized structures was validated by scanning electron microscopy. The optical properties were analyzed using an angleresolved spectrometer. Tunable angle-independence, based on reflection intensity modulation, has been investigated by using photonic structures with less degree of symmetry. Finally, these findings were used to demonstrate the high potential of two-photon polymerization in the field of biomimetic research and for technical application, e.g. for sensing and anti-counterfeiting.

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Section: (D) and 2h)mentioning

confidence: 99%

Biomimetic structural coloration with tunable degree of angle-independence generated by two-photon polymerization

Zyla¹,

Kovalev²,

Heisterkamp³

et al. 2019

Opt. Mater. Express

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“…For example, the mechanical stability of additively fabricated structures can be modified such that their Young's modulus or mechanical strength differs within the structures or mechanically differently stable structures can be created [4]. This is of particular interest in tissue engineering, since the cells prefer to adhere, differentiate, and proliferate on non-toxic structures which resemble the natural tissue in its mechanical properties.…”

Section: Fabrication Without Limitmentioning

confidence: 99%

From Lab to Fab — High‐Precision 3D Printing

Stender¹,

Mantei²,

Houbertz

2017

Laser Technik Journal

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The demand of sophisticated components is continuously increasing, driven by big data, IoT, and Industry 4.0. Reducing process cost is impacting all levels in a vast majority of products. 3D printing is typically restricted to additive fabrication within one material class, structures are limited in size, shape, surface finish, requiring supporting structures. This prevents high quality photonic components. High precision 3D printing is utilizing a multiphoton process which is a powerful tool for prototyping of miniaturized designs in automated, scalable processes for products in photonic or medical packaging. While most of the 3D systems are still working rather on a lab than on an industrial scale with typically very long fabrication times ranging from minutes to hours for a single microlens, the process can be boosted significantly to a fabrication time in the range of seconds per lens using different fabrication strategies, resulting in microlenses with high optical quality. This saves more than 90 % of the fabrication time compared to standard fabrication, and 1 cm2 lens arrays with high filling factors can be fabricated within only a few hours — a big step towards high throughput and industrial scalability.

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“…To date, much effort has been put into the development of novel photosensitive materials that can be used to increase the TPA absorption rate and thus to enable structuring at higher speeds. [4][5][6] So far, however, only slight improvements to the TPA process have been achieved.…”

mentioning

confidence: 99%