Guided Laboratory Tours at the NanoDay

Let the scientists show you where and how they work. At the NanoDay you may attend three guided laboratory tours.

Tour 1, Rädler Group: „Transistors made of organic molecules as a basis for biological sensors" (starting at 11 h, hourly, approx. 30 minutes)

The topic of this tour is the fabrication of transistors made of organic molecules. These novel device are important building blocks for the construction of bio sensors. They form an interface between biology and electronics. At the first station of the tour you will be made familiar with the vacuum technology. The fabrication of organic transistors needs vaccum to avoid a contamination of the samples. At Station 2 of the guided tour you will see, how a sample is being produced in the vacuum using evaporation techniques. Once a sample is complete, the scientist wants to explore its properties. For this they use different techniques, which you will see at the final station of the tour. The Rädler group investigates the samples electronically, optically and with the help of X-rays.

Tour 2, Kotthaus Group: „From the Silicon crystal to the quantum dot“ (starting at 11.15 h, hourly, approx. 45 minutes)

In the beginning of the tour you will watch a 10 minute film about the fabrication of the samples in the clean room. After that you will see the development stages of a sample on the basis of exhibits from the silicon single crystal to the completed sample. You will see the liquid helium tank, in which the sample shall be investigated. Afterwards you will learn the principles of the measurement methods at extremely low temperatures and experience two life experiments on nanostructures. Naturally the scientists themselfs show and explain the measurements. Last but not least you may win a prize in a concluding quiz game!

Tour 3, Hänsch and Weinfurter groups: "Ultracold atoms and the physics of single photons" (starting 11.30 h, hourly, 30 minutes)

The group of Prof. Hänsch will show an experiment at the interface between quantum optics and solid state physics. The controlled interaction between ultracold atoms and nanomechanical systems shall be investigated. In the laboratory the experimental setup will be shown during an experiment, in which atoms will be trapped, cooled and moved by means of magnetic fields and laser light.In the group of Weinfurter you will learn about the generation of single photons (light particles) with color centers in diamond. Single photons may be used for quantum cryptography, or to verify theoretic predicitions of quantum mechanics. In the laboratory the optical setup for the generation and the observation of single photons can be seen. The preparation of the samples will be explained.

ATTENTION: To assure your guaranteed participation at a tour, you should reserve early at the info counter in the Lichthof!

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