Berlin 2015 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 28: Poster Session II

MM 28.18: Poster

Dienstag, 17. März 2015, 18:30–20:30, Poster E

metallic nanoparticles and nanoalloys fabricated via solid state deweting — •Dong Wang, Andreas Herz, and Peter Schaaf — TU Ilmenau, FG Werkstoffe der Elektrotechnik, Ilmenau, Germany

metallic an alloy nanoparticles are paid increased attention due to their potential applications in catalysis, magnet memories, sensors, and plasmonics. Here, nanoparticles, nanoporous nanoparticles and bi-metallic nanoparticles were fabricated by using solid-state dewetting. By using pre-patterned substrate, ordered arrays of nanoparticles can be realized due to the curvature driven diffusion through the modulation of the chemical potential by substrate local curvature. By combining the solid state dewetting of Ag/Au bilayer with a subsequent dealloying process, nanoporous gold nanoparticles were fabricated, and possess a different plasmonic property comparing to the solid gold nanoparticles. In addition, the alloying behavior in the microscale can be well studied through the solid state dewetting of metallic bilayer. Different Ni-Au nanoparticles were realized by controling the process parameters.