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Dresden 2017 – scientific programme

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O: Fachverband Oberflächenphysik

O 85: Thin Films, Nanostructures and Nanoparticles I

O 85.4: Talk

Thursday, March 23, 2017, 11:00–11:15, ZEU 114

In situ GISAXS study of Aluminum thin film growth on PS-b-PMMA and its constituent homopolymersBjörn Beyersdorff1, •Matthias Schwartzkopf1, Wiebke Ohm1, Alexander Hinz2, Thomas Strunskus2, Oleksandr Polonskyi2, Franz Faupel2, Volker Körstgens3, Franzika Löhrer3, Peter Müller-Buschbaum3, and Stephan V. Roth1,41Deutsches Elektronen-Synchrotron DESY — 2Christian-Albrechts-Universität zu Kiel — 3Technische Universität München — 4KTH Royal Institute of Technology

Installation of nanostructured metal films with tailored optical properties is of high importance in many areas of modern science and technology. Aluminum (Al) nanostructures for instance are very promising for surface-enhanced Raman Scattering (SERS) due to their wide tuneability of the plasmon resonance [1]. When depositing metal by sputter deposition on a nanostructured diblock copolymer substrate, a different adatom mobility on the two polymer blocks leads to selective wetting of one block and thus to an imitation of the polymer structure by the metal atoms [2,3]. We report on the sputter deposition of Al on a PS-b-PMMA diblock copolymer thin film and its two constituent homopolymers PS and PMMA by means of grazing incidence small-angle X-ray scattering (GISAXS). Cluster growth kinetics on the diblock and the homopolymer films is analyzed and compared to ex situ samples investigated by AFM. [1] Gérard et al, J. Phys. D: Appl. Phys., 48, 184001 (2015), [2] Lopes et al, Nature 414, 735 (2001), [3] Roth et al, ACS Appl. Mater. Interfaces 7 (23), 12470 (2015)

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