Modification of silicon based nanowires by selective self-limiting surface reactions

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The project focuses on suitable surface modifications of nanowires, which are required for device assembly and specific functionality. Within the first part of the project the extensive fabrication routines of nanowire devices were studied with emphasis to bio-sensor devices. Furthermore, a ptype Si / n-type TiO2 nanowire structure was created by means of ALD and used to sense the important neurotransmitter dopamine down to a concentration of 200 nM. The current research focuses on bio-sensor improvements by using surface modified nano-tubes, which offer versatile possibilities for enhanced bio-chemical sensing.