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O: Fachverband Oberflächenphysik

O 17: Poster Session I (Nanostructures at Surfaces; Metal Substrates: Epitaxy and Growth; Methods: Scanning Probe Techniques; Phase Transitions)

O 17.86: Poster

Montag, 26. März 2007, 17:30–20:30, Poster C

Dynamics of nanobubble formation around absorbing nanoparticles in liquid — •Stefan Weber, Sebastian Fischer, Paul Leiderer, Anton Plech, and Johannes Boneberg — 1.Fachbereich Physik, Universität Konstanz, Fach M676, 78457 Konstanz

Nanosecond laserpulses (wavelength of 532nm) are used to illuminate Au nanoparticles of different sizes in aqueous solution. At sufficient high intensities bubbles form around the nanoparticles, expand and collapse again on a time scale of nanoseconds. Time-resolved optical transmission and scattering measurements simultaneously performed at different wavelengths - and especially on both sides of the plasmon resonance of the particles - allow to follow these processes in detail.