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Martin Wegener

Karlsruhe Institute of Technology

3D Laser Nanoprinting

In this talk, I will review recent progress of my group concerning 3D laser nanoprinting.

Concerning 3D printing speed, I will emphasize our progress on rapid multi-focus writing, leading to 3D printing speeds around 10^7 voxels/s at sub-micrometer voxel sizes (see V. Hahn et al., Adv. Funct. Mater., in press (2020)). Example 3D chiral-metamaterial benchmark structures contain more than 300 billion voxels. I will describe future prospects for further advances along these lines. In addition, I will describe the status of our radically different light-sheet 3D laser-printing approach, which has the potential to be yet much faster (see V. Hahn et al., Opt. Photonics News 30, 28 (2019)).

Concerning 3D printing novel and multiple materials, I will briefly review our work on stimuli-responsive or “4D” microstructures (M. Hippler et al., Nature Commun. 10, 232 (2019)) and on integrating a microfluidic chamber into the 3D laser nanoprinter (F. Mayer et al., Science Adv. 5, eaau9160 (2019)). Furthermore, I will present our ongoing work with respect to 3D printed mesoporous µ-architectures exploiting self-organization (F. Mayer et al., unpublished) and regarding 4D liquid-crystal-elastomer µ-architectures made by varying the direction of a quasi-static electric-field vector during the 3D laser-printing process (A. Münchinger et al., unpublished).

Biography

After completing his Diplom and PhD in physics at Johann Wolfgang Goethe-Universität Frankfurt (Germany) in 1986 and 1987, respectively, he spent two years as a postdoc at AT&T Bell Laboratories in Holmdel (U.S.A.). From 1990-1995 he was professor at Universität Dortmund (Germany), since 1995 he is professor at Institute of Applied Physics of Karlsruhe Institute of Technology (KIT). Since 2001 he is additionally department head at Institute of Nanotechnology (INT) of KIT, since 2016 he is director at INT. From 2000 to 2014 he was spokesperson of the Center for Functional Nanostructures. Since 2018 he is spokesperson of the Cluster of Excellence 3D Matter Made to Order.

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