Programme

Unfurtunately the monastery Irsee has been closed by the Bavarian government due to the corona virus.

Therefore we have decided to offer the conference as a web conference only.

In those unpredictable times, protecting our participants’ health has the highest priority for us!

The scientific exchange must not come to a complete standstill and we believe that with this web solution we have found a way to keep the scientific community going.

In order to participate in the livestream of the conference as easy as possible and to give your presentation, we recommend the use of the web browsers Google Chrome or Microsoft Edge.

Here you can find detailed instructions for using the livestream.

As a participant of the Bioinspired 2020 you have received an e-mail containing the login data for the web conference.

The login data for the sessions are provided daily.

In order to allow all conference participants access to the posters, we ask you to upload your poster by login on the conference homepage and clicking on the button "My Submission" in the upper right corner of the conference homepage. Then select the submission to which you want to upload the poster and upload the poster at the bottom of the page.

Furthermore we would like to ask all poster authors to prepare 4 PowerPoint slides to present your poster to the audience.
Please also include your contact details on the digital poster to allow participants to reach you with questions.

Please note that your poster will be pictured publically.

As poster author you can upload your poster similar to the way you submitted your abstract.
Click on "My Submissions" in the upper right corner at the homepage.

Poster documents can be found by opening the respective abstract in the online programme.
If a poster document has already been uploaded for the abstract, it can then be opened and downloaded.

Please note that your poster will be pictured publically.

You can ask your questions via chat already during the presentations!
Please use for this the Q&A (F&A) button!

For further scientific exchange we implemented a discussion forum on the homepage of the DGM.
Please visit discussion.dgm.de and use your DGM or Bioinspired user credentials to login.

Back to overview

Lecture

The path to making multiscale materials, mediated by microbes

Tuesday (17.03.2020)
09:30 - 09:50

Inorganic, non-metallic materials exhibit interesting passive and active mechanical properties, when structured hierarchically down to the nanometer scale by biotemplating. While nature does provide a great wealth of structural templates, tailoring biotemplated materials' architectures on defined hierarchical levels is a desirable goal.

We combine biotemplating techniques, developed earlier,[1,2] with two novel approaches to create tailored templates, namely the utilization of microbial phototaxis, and rheotaxis. These are the alignments of microbes in relation to light patterns, and fluid streamlines.

The generally uncommon ductilities of biotemplated, hierarchically and anisotropically structured silica materials were determined[3] and traced via a stick-slip model of parallel rods.[4] Further, we observed passive moisture-driven bilayer actuation in silica structures derived from actuating biological templates, illustrating one of the attainable novel properties.[5]

With regard to the creation of tailored templates, the directions, velocities and patterns of movement of a selection of microbe species were found to depend on illumination brightness, wavelength, direction, and also the culturing conditions. We also found that flagellated microbes can be induced to manipulate structure-forming particles by light guidance.

We confirmed that unique mechanical behaviors are achieved by templating hierarchically structured biological materials.[3-5] We identified promising pathways to pattern complexly structured, hierarchical materials using live microbes. Patterning them into complex shapes can be achieved via computer-controlled illumination in a defined plane.

[1] D. Van Opdenbosch, G. Fritz-Popovski, O. Paris, and C. Zollfrank, J. Mater. Res., vol. 26, no. 10, pp. 1193–1202, 2011.

[2] G. Fritz-Popovski, D. Van Opdenbosch, C. Zollfrank, B. Aichmayer, and O. Paris, Adv. Funct. Mater., vol. 23, no. 10, pp. 1265–1272, 2013.

[3] G. Fritz-Popovski, R. Morak, T. Schöberl, D. Van Opdenbosch, C. Zollfrank, and O. Paris, Bioinspired, Biomim. Nanobiomaterials, vol. 3, no. 3, pp. 160–168, Sep. 2014.

[4] D. Van Opdenbosch and C. Zollfrank, Adv. Eng. Mater., vol. 1801097, p. 1801097, 2019.

[5] D. Van Opdenbosch, G. Fritz-Popovski, W. Wagermaier, O. Paris, and C. Zollfrank, Adv. Mater., vol. 28, no. 26, pp. 5235–5240, 2016.

Speaker:
Dr. Daniel Van Opdenbosch
Technical University of Munich (TUM)
Additional Authors:
  • Prof. Dr. Cordt Zollfrank
    Technical University of Munich (TUM)
  • Steffi Deuerling
    Technical University of Munich (TUM)
  • Yvonne Gmach
    Technical University of Munich (TUM)
  • Moritz Klotz
    Technical University of Munich (TUM)