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O: Fachverband Oberflächenphysik
O 39: Poster Session III: Poster to Mini-Symposium: Free-standing functional molecular 2D materials I
O 39.2: Poster
Tuesday, March 2, 2021, 10:30–12:30, P
Controlled Electron-Induced Fabrication of Metallic Nanostructures on 1 nm Thick Membranes — Christian Preischl1, •Linh Hoang Le2, Elif Bilgilisoy1, Florian Vollnhals1, Armin Gölzhäuser2, and Hubertus Marbach1 — 1Physikalische Chemie II, Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany — 2Fakultät für Physik, Universität Bielefeld, 33615 Bielefeld, Germany
Functional metallic nanostructures precisely deposited on insulating 2D materials are desired in many applications in optics, electronics, and magnetics. Such miniaturized details can be realized by using focused electron beam induced deposition (FEBID). With this technique, we directly deposit iron structures from Fe(CO)5 precursors onto terphenylthiol self-assembled monolayers (SAMs). We then apply electron irradiation to crosslink the functionalized SAMs into porous carbon nanomembranes (CNMs) while the iron structures remain on their surfaces. The resulting ultrathin, flexible and mechanically stable CNMs preserves the written iron patterns. They can be transferred onto either solid substrates or onto grids to obtain free-standing metal/CNM hybrids. In this way, we can achieve clean iron nanostructures of arbitrary size and shape on top of the 1 nm thick CNMs. Combining the ease and versatility of CNMs with the flexibility of FEBID leads to a promising route for the fabrication of functional hybrid nanostructures.