Nano-research at KIT
Joel Cramer (Karlsruher Institut für Technologie (KIT))

Nanostructured devices became more and more important in the last decades, as they provide many possibilities on various fields of research and application. Therefore, a lot of effort has been made to create novel fabrication methods and devices.
The phase separation of polymer mixtures while being spinned as a thin film on a substrate allowed the development of the polymer blend lithography . In case of a PS/PMMA mixture, either PS islands or a PMMA dot matrix remain after dissolving one of the components. Combining this technique with a SCMOL (substrate-consuming metal organic layer), which enables a subsequent layer growth of a deposited metal film, nanotubes placed on the surface of the substrate can be elevated. Those upright nanotubes can, for instance, be modified in such a way that they act as a biological sensor.
In contrast to classical digital computers, which use bits with the exclusive states 0 and 1, quantum computers work with quantum bits (qubits). A single qubit consists of a quantum-mechanical two-level system, which also has two states, but in accordance to quantum-mechanics a superposition of these states can occur. This fact gives the quantum computer the potential of high parallelism to solve particular problems faster than a common computer. Superconducting qubits, which generally include Josephson tunnel junctions , are among the most promising approaches. Such a superconducting qubit, more precisely a transmon qubit , as well as first measurement results will be presented.