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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.4: Poster
Montag, 27. März 2023, 18:00–20:00, P3
Influence of thermal effects on a combinatorial plasmonic nanostructure for bio-detection — •Tianfu Guan1, Suzhe Liang1, Yusuf Bulut1,2, Kristian Reck3, Matthias Schwartzkopf2, Jonas Drewes3, Thomas Strunskus3, Franz Faupel Faupel3, Stephan V. Roth2,4, and Peter Müller-Buschbaum1,5 — 1TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 2DESY, 22607 Hamburg, Germany — 3CAU, Chair for Multicomponent Materials, Faculty of Engineering, 24143 Kiel, Germany — 4Department of Fiber and Polymer Technology, KTH, SE-100 44 Stockholm, Sweden — 5MLZ, TUM, 85748 Garching, Germany
In recent decades, Au nanoparticles (NPs) have been utilized in a wide range of sensor applications, such as photodetection, bio-detection, and thermal-detection, because of their unique optical and chemical properties. Among the optical sensors, surface-enhanced Raman spectroscopy (SERS) has attracted extensive attention being used in the identification of unknown substances in analytical chemistry. In this work, we investigate in situ sputter deposition of Ag on highly ordered Au NPs substrates as probed by grazing incidence small angle X-ray scattering (GISAXS). In addition, we explore the effect of temperature on the silver growth kinetics on different sizes of Au NPs substrates. Furthermore, by correlating the growth steps of the composite Au/Ag nanostructures with their SERS performance, we obtain the plasmonic hot spot performance corresponding to the combined nanostructure.