Optical and Electronic Properties of Nanohelices

Prof. Dr. Vojislav Krstić, Friedrich-Alexander-Universität Erlangen-Nürnberg

22 May 2017, 16:15–17:45; Location: S2|17-103

Nanohelices with pitch and diameter as characteristic dimensions of the order of 100 nm are formidable systems to investigate optical and electronic properties of matter on the nanoscale. Their unique helical structure on the nanoscale is the source of a range of unconventional properties. In the present work, first the production process of the nanohelices, omitting any active cooling, will be outlined. In the following the unique plasmonic behaviour of nickel and silver nanohelices in terms of optical antennae and reproducible SERS substrate, with enhancement factors allowing principally for single molecule detection, is discussed, and magnetoinduced optical and electrical anisotropies are presented, which are due to the nanohelices’ structural symmetry breaking nature. Finally, first insight into the AC electrical transport of germanium nanohelices will be given.

Category: CE Seminar


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