Die Streuzentren – Silizium-Nanopartikel, hier als schwarze Scheiben dargestellt – auf dem transparenten Substrat streuen (einstellbar) bestimmte Farben von Licht; andere Wellenlängen werden nicht beeinflusst. (Figure: Dennis Arslan, Universität Jena)Dennis Arslan, Universität Jena
Optics and Photonics: Miniaturization of Diffusers for New Applications

December 22, 2021

Miniaturization of optical components is a challenge in photonics. Researchers of Karlsruhe Institute of Technology (KIT) and Friedrich Schiller University of Jena have now succeeded in developing a diffuser, a disk that scatters light, based on silicon nanoparticles. It can be used to specifically control the direction, color, and polarization of light. This novel technology may be used in transparent screens or augmented reality. The results are reported in Advanced Materials (DOI: 10.1002/adma.202105868).

Press Release 118/2021
Electron microscopic reconstruction of a 3D nanostructure printed with the 2-step absorption process (left) and light microscopy (right). (Photo: Professor Rasmus Schröder, University of Heidelberg, Vincent Hahn, KIT) Professor Rasmus Schröder, University of Heidelberg, Vincent Hahn, KIT
3D Laser Nanoprinters Become Compact

November 30, 2021

Lasers in conventional laser printers for paper printouts are very small. 3D laser printers for 3-dimensional microstructures and nanostructures, by contrast, have required big and expensive laser systems so far. Researchers of Karlsruhe Institute of Technology (KIT) and the Heidelberg University now use another process for this purpose. Two-step absorption works with inexpensive and small, blue laser diodes. As a result, much smaller printers can be used. Work is reported in Nature Photonics. (DOI: 10.1038/s41566-021-00906-8)

Press Release 106/2021
Small and revolutionary: Physicist Larissa Kohler, KIT, has developed a new type of resonator that makes ever smaller nanoparticles visible. (Photo: Markus Breig, KIT)Markus Breig, KIT
New Sensor Detects Ever Smaller Nanoparticles

November 4, 2021

Nanoparticles are omnipresent in our environment: Viruses in ambient air, proteins in the body, as building blocks of new materials for electronics, or in surface coatings. Visualizing these smallest particles is a problem: They are so small that they can hardly be seen under an optical microscope. Researchers of Karlsruhe Institute of Technology (KIT) have now developed a sensor that not only detects nanoparticles, but also determines their condition and tracks their movements in space. The highly sensitive and compact detector, a novel type of Fabry-Pérot resonator, is presented in Nature Communications (DOI: 10.1038/s41467-021-26719-5).

Press Release 101/2021
The sensor unit consists of a graphene field effect transistor on which a surface-mounted metal-organic framework is grown. (Figure: Sandeep Kumar, KIT)Sandeep Kumar, KIT
Innovative Sensor Specifically and Precisely Detects Molecule

September 9, 2021

Researchers of Karlsruhe Institute of Technology (KIT) and Technical University of Darmstadt have developed a novel sensor for gas molecules by combining a graphene transistor with a customized metal-organic coating. The innovative sensor specifically and precisely detects molecules and represents the prototype of an entirely new class of sensors. The ethanol sensor developed responds to neither other alcohols nor humidity. The results are reported in Advanced Materials. (DOI: 10.1002/adma.202103316)

Press Release 082/2021
The automated plant will produce new materials for drug discovery and materials science through a combination of established equipment and open hardware components. (Foto: Patrick Hodapp, KIT)Patrick Hodapp, KIT
Automated Chemical Synthesis: Reliable Production and Rapid Knowledge Gain

August 4, 2021

One of the most modern infrastructures for automated process control in chemistry is being built by the Karlsruhe Institute of Technology (KIT) together with BASF: The facility will initially produce new substances in parallel for applications in fields ranging from biology to materials science. In the long term, the facility will also enable a high-throughput process for chemical reactions. KIT is investing about four million euros in this project. The facility is located in the Karlsruhe Nano Micro Facility (KNMFi) and is open to internal and external scientists.

Press Release 072/2021