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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 29: Interfaces and Thin Films

CPP 29.2: Vortrag

Mittwoch, 29. März 2023, 10:00–10:15, MER 02

Template-Induced Growth of Sputter-Deposited Gold Nanoparticles on Ordered Porous TiO2 Thin Films for SERS Sensors — •Suzhe Liang¹, Tianfu Guan¹, Shanshan Yin¹, Eva Krois², Wei Chen¹, Christopher R. Everett¹, Jonas Drewes³, Thomas Strunskus³, Marc Gensch^1,4, Jan Rubeck⁴, Christoph Haisch², Matthias Schwartzkopf⁴, Franz Faupel³, Stephan V. Roth^4,5, Ya-Jun Cheng⁶, and Peter Müller-Buschbaum^1,7 — ¹TUM School of Natural Sciences, Chair for Functional Materials, Garching — ²TUM School of Natural Sciences, Chair of Analytical Chemistry and Water Chemistry, Garching — ³LS Materialverbunde, Institut für Materialwissenschaft, CAU, Kiel — ⁴DESY, Hamburg — ⁵Department of Fibre and Polymer Technology, KTH, Stockholm, Sweden — ⁶Ningbo Institute of Materials Technology & Engineering, CAS, Ningbo, China — ⁷MLZ, TUM, Garching

Ordered porous gold/titanium dioxide (Au/TiO2) hybrid nanostructured films are specifically interesting in large-scale applications using localized surface plasmon resonances (LSPRs) and surface-enhanced Raman scattering (SERS). We investigate the optical response of sputter-deposited Au/TiO2 nanohybrid thin films with a focus on the plasmonic response and application as molecular sensors. To elucidate the origin of this behavior, we apply in situ grazing-incidence small-angle X-ray scattering (GISAXS) to investigate the growth kinetics of Au on a TiO2 template during sputter deposition. The Raman intensity of deposited molecules, probed with rhodamine 6G (R6G), depends on the deposited gold thickness.