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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: Poster Session I
CPP 24.28: Poster
Montag, 16. März 2020, 17:30–19:30, P3
Controllable Au Nanoparticle Plasmonic Effects via Sputter Deposition on TiO2 Templates — •Suzhe Liang1, Wei Chen1, Shanshan Yin1, Matthias Schwartzkopf2, Stephan V. Roth2, and Peter Müller-Buschbaum1 — 1Lehrstuhl für Funktionelle Materialien, Physik-Department, TU München, 85748 Garching, Germany — 2Deutsches Elektronen-Synchrotron (DESY), 22607 Hamburg, Germany
Due to the localized surface plasmon resonances (LSPR) effect, plasmonic metal nanostructures exhibit unique optical properties and have been applied in various fields, such as plasmon-enhanced sensing and chemistry, biotechnologies, and lighting harvesting for solar energy. Generally, plasmonic mantel nanostructures can be fabricated by colloid chemical methods, electron-beam lithography, and laser ablation. The wavelength of LSPR can be tuned form the ultraviolet to the infrared regions by changing the structure size and shape. In this work, we have introduced a facile and scalable method to obtain plasmonic nanoparticle array, with uniformed size and inter-distance distribution, by sputtering gold on TiO2 template. The sputtering measurement is realized by a unipolar reactive pulsed DC magnetron sputtering device. The uniform distribution of gold nanoparticles can be controlled by sputtering time and the customized TiO2 templates with designable morphologies. The growth dynamics of gold nanoparticles are studied by GISAXS. Combined with SEM and UV-vis spectroscopy measurements, the relationship between gold nanoparticles distribution and LSPR effects is established and explained.