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MM: Fachverband Metall- und Materialphysik
MM 5: Nanostructured Materials II
MM 5.1: Vortrag
Montag, 25. Februar 2008, 12:00–12:15, H 0107
Laser-induced nanotube-nanotube interactions — •Jessica Walkenhorst1, Martin E. Garcia1, and Harald O. Jeschke2 — 1Theoretische Physik, Fachbereich Naturwissenschaften, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel — 2Institut für theoretische Physik, Universität Frankfurt, Robert-Mayer-Str. 8-10, 60054 Frankfurt, Germany
We have investigated the possibility of achieving welding of two single wall nanotubes by making use of topological defects and femtosecond laser excitation. Based on molecular dynamics simulations performed on time-dependent potential energy surfaces, and considering explicitly the shape, energy and duration of the laser pulse, we describe the ultrafast dynamics of two defective nanotubes in contact to each other immediately after femtosecond excitation. We discuss the role of different defects and their respective behaviour under laser heating.