Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Hans-Hermann Johannes"'
Autor:
Lea Könemund, Laurie Neumann, Felix Hirschberg, Rebekka Biedendieck, Dieter Jahn, Hans-Hermann Johannes, Wolfgang Kowalsky
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-2 (2023)
Externí odkaz:
https://doaj.org/article/d8617ada670a494ea0be8c2f0b7f1768
Autor:
Lea Könemund, Laurie Neumann, Felix Hirschberg, Rebekka Biedendieck, Dieter Jahn, Hans-Hermann Johannes, Wolfgang Kowalsky
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract Traditional sensing technologies have drawbacks as they are time-consuming, cost-intensive, and do not attain the required accuracy and reproducibility. Therefore, new methods of measurements are necessary to improve the detection of bacteri
Externí odkaz:
https://doaj.org/article/d4a0730819f34a339aebe36df8fbab80
Autor:
Pen Yiao Ang, Marko Čehovski, Frederike Lompa, Christian Hänisch, Dinara Samigullina, Sebastian Reineke, Wolfgang Kowalsky, Hans-Hermann Johannes
Publikováno v:
Polymers, Vol 13, Iss 20, p 3566 (2021)
Organic thin-film lasers gain interest as potential light sources for application in diverse fields. With the current development, they hold variety of benefits such as: low-cost, high-performance, and color-tunability. Meanwhile, the production is n
Externí odkaz:
https://doaj.org/article/61d9150f17e44957b40d7f25c646c9b6
Autor:
Laurie Neumann, Lea Könemund, Valentina Rohnacher, Annemarie Pucci, Hans-Hermann Johannes, Wolfgang Kowalsky
Publikováno v:
Materials, Vol 14, Iss 8, p 1934 (2021)
Currently used elaborate technologies for the detection of bacteria can be improved in regard to their time consumption, labor intensity, accuracy and reproducibility. Well-known electrical measurement methods might connect highly sensitive sensing s
Externí odkaz:
https://doaj.org/article/74f3c35aea1343cd8e56381b0dc93535
Autor:
Henrik‐Alexander Christ, Pen Yiao Ang, Fuzhao Li, Hans‐Hermann Johannes, Wolfgang Kowalsky, Henning Menzel
Publikováno v:
Journal of Polymer Science, 2022 ; 60 : 715–725--https://doi.org/10.1002/(ISSN)1523-1496--https://onlinelibrary.wiley.com/journal/26424169--http://www.bibliothek.uni-regensburg.de/ezeit/?3004641--2642-4150--2642-4169
The fabrication of micron-sized poly(methyl methacrylate) (PMMA) polymer optical fibers doped with rhodamine B as an organic dye is demonstrated. Highly aligned and defect-free fibers are fabricated by using the stable jet electrospinning (SJES) meth
Autor:
Simon Spelthann, Stefanie Unland, Jonas Thiem, Florian Jakobs, Jana Kielhorn, Pen Yiao Ang, Hans-Hermann Johannes, Dietmar Kracht, Joerg Neumann, Axel Ruehl, Wolfgang Kowalsky, Detlev Ristau
Publikováno v:
Sensors, Vol 20, Iss 15, p 4086 (2020)
Lab-on-a-Chip (LoC) devices combining microfluidic analyte provision with integrated optical analysis are highly desirable for several applications in biological or medical sciences. While the microfluidic approach is already broadly addressed, some
Externí odkaz:
https://doaj.org/article/6d84d180f5df40c6b6a5f3be0d985e6e
Autor:
Marko Čehovski, Jing Becker, Ouacef Charfi, Hans-Hermann Johannes, Claas Müller, Wolfgang Kowalsky
Publikováno v:
Applied Sciences, Vol 10, Iss 8, p 2805 (2020)
Organic thin-film lasers (OLAS) are promising optical sources when it comes to flexibility and small-scale manufacturing. These properties are required especially for integrating organic thin-film lasers into single-mode waveguides. Optical sensors b
Externí odkaz:
https://doaj.org/article/6ea538cf8a634a0282237ee171f35ad9
Autor:
Florian Jakobs, Kristoffer Harms, Jana Kielhorn, Daniel Zaremba, Pen Yiao Ang, Wolfgang Kowalsky, Hans-Hermann Johannes
Publikováno v:
Materials, Vol 13, Iss 8, p 1975 (2020)
For most kinds of active polymer optical fibers, a homogeneous distribution of dye molecules over the entire fiber length and cross section is required. In this study, chemical bonding of dyes to poly(methyl methacrylate) (PMMA) by copolymerization i
Externí odkaz:
https://doaj.org/article/094cd3a091884f4dabd74cf99e3138b7
Autor:
Itxaso Parola, M. Asuncion Illarramendi, Florian Jakobs, Jana Kielhorn, Daniel Zaremba, Hans-Hermann Johannes, Joseba Zubia
Publikováno v:
Polymers, Vol 11, Iss 7, p 1187 (2019)
This work reports on a diameter dependence analysis of the performance as luminescent solar concentrators of three self-fabricated polymer optical fibers (POFs) doped with a hybrid combination of dopants. The works carried out include the design and
Externí odkaz:
https://doaj.org/article/d9e73ac236d4403980fefced2644eb2a
Autor:
Soraya Zangenehzadeh, Emil Agócs, Harsh Jivani, Lea Könemund, Laurie Neumann, Felix Hirschberg, Svenja Herdan, Rebekka Biedendieck, Dieter Jahn, Bernhard W. Roth, Hans-Hermann Johannes, Wolfgang Kowalsky
Publikováno v:
Thin Solid Films. 764:139583