SurfaceScience21 – wissenschaftliches Programm

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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

Dienstag, 2. März 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.