@inproceedings{ErmilovaHertwigDoehringetal.2024, author = {Ermilova, Elena and Hertwig, Andreas and D{\"o}hring, Thorsten and Stanik, Eva and Cotroneo, Vincenzo and Gibertini, Eugenio}, title = {Ellipsometrische Charakterisierung von Polydopamin f{\"u}r funktionelle technische Schichten}, series = {DGaO-Proceedings}, volume = {2024}, booktitle = {DGaO-Proceedings}, number = {125}, pages = {1 -- 2}, year = {2024}, abstract = {D{\"u}nne Schichten aus dem bionischen Material Polydopamin (PDA) sind heute zunehmend auch f{\"u}r innovative technische Anwendungen von Interesse. Mittels spektroskopischer Ellipsometrie wurde die dielektrische Funktion von PDA vom ultravioletten bis zum nahen infraroten Spektralbereich vermessen. {\"U}ber ein Modell wurde auch die Dicke dieser selbstorganisierenden Schichten bestimmt.}, subject = {D{\"u}nne Schicht}, language = {de} } @inproceedings{ErmilovaHertwigDoehringetal.2024, author = {Ermilova, Elena and Hertwig, Andreas and D{\"o}hring, Thorsten and Stanik, Eva and Cotroneo, Vincenzo and Gibertini, Eugenio}, title = {Ellipsometrical characterization of poly-dopamine layers considered for technical applications}, series = {Proceedings of SPIE}, volume = {2024}, booktitle = {Proceedings of SPIE}, number = {13013}, doi = {https://doi.org/10.1117/12.3015281}, pages = {1301309-1 -- 1301309-8}, year = {2024}, abstract = {Although the organic molecule dopamine (3,4-dihydroxyphenethylamine) is commonly known as the "hormone of happiness", thin films of poly-dopamine also have interesting technical properties. When produced by dip coating, the self-organizing layers grow in a reproducible thickness of single or multiple molecule monolayers of a few nanometer thickness only. In this work, we introduce a method of determining the layer thickness of poly-dopamine on mirrors for astronomical X-ray telescopes. This work is based on spectroscopic ellipsometry measurements and involves the development of an optical model for the poly-dopamine layers including the dielectric function. Thereby the complex refractive index of the produced layers was determined, covering the range from the ultraviolet to the near infrared spectral region. These measurement results and the corresponding technical challenges are presented in this contribution. Furthermore, an outlook to potential technical applications of this interesting material is given and poly-dopamine layers will make scientist and engineers hopefully happy as an innovative and fascinating technical solution for the future.}, subject = {D{\"u}nne Schicht}, language = {en} }