The team at LAT (Prof. Andreas Ostendorf and Dr. Ilya Tumkin), together with international colleagues, has published a review in the Journal of Advanced Functional Materials.
The paper reviews new emerging technologies of laser-induced patterning, where micro- and nanostructures are created by chemical reactions triggered by laser light. The reactions on the surface and within chemically active liquids are discussed, focusing on whether the patterns are formed due to photochemical or photothermal processes. 

In the recently published paper “3D micro-devices for enhancing the lateral resolution in optical microscopy”, scientists from various institutions, including Ruhr University Bochum, have developed a new strategy for the production of high-quality micro-spheres using laser-based 3D printing. This approach uses multiphoton lithography, which enables the maskless production of real 3D structures in the micro and nano range. The integration of dielectric microspheres behind the imaging lens of an optical microscope offers a promising solution to improve lateral resolution.

Ultrashort laser pulses are used to generate laser-induced periodic surface structures (LIPSS). To generate LIPSS on small, confined surfaces, the laser source must be focused to a small spot diameter. In contrast to the commonly used high numerical aperture objectives, we present a Bessel beam based approach to generate LIPSS covered lines. The setup convinces with a large depth of field. The applicability of this method is demonstrated by patterning the cladding surface of nickel-titanium wires.
The work is presented on the cover of the journal Applied Physics A.