Project C1:

Directed assembly of chemically synthesized metal oxide and higher chalcogenide nanoparticles
(since 2015)

Following the synthetic routes, which have been developed in the first funding phase of the SFB, we will prepare metallic and resistively switching nanoparticles (NPs) by chemical synthesis. We will apply dip-pen nanolithography (DPN) and chemical e-beam lithography (C-EBL) to create surface patterns which are able to bind individual NPs and thereby to direct their assembly. Thereby we aim to control the particle topology as a key for integration of NPs into lithographically fabricated devices.

Switching of chemically synthesized metal oxide and higher chalcogenide nanoparticles

Project C1 introduces the development of solvothermal routes for the synthesis of metal oxide and chalcogenide nanoparticles in the sub-50 nm range and the investigation of the resistive switching properties of individual nanoparticles. As model systems for all three switching variants, we synthesize nanoparticles of selected oxides and higher chalcogenides, respectively. Electrical switching of individual particles is being carried out in-situ in a scanning electron microscope (SEM). We plan to systematically vary the particle size, and the defect concentration in terms of stoichiometry and doping. In the long term, successful candidates will be included in self-assembly techniques and surface patterning in order to produce long range ordered, registered arrays of switching cells.

Principal investigator:

Prof. Dr. rer. nat. U. Simon
Institut für Anorganische Chemie
RWTH Aachen University
Phone: +49 (0)241 80 94644

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