SPONTANEOUS TRANSFORMATIONS OF NANOCLUSTERS |
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Authors: | M. Rieth W. Schommers S. Baskoutas C. Politis |
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Affiliation: | AMA-SYSTEMS GmbH, Unterer Hardweg 9, 75181 Pforzheim, Germany; Department of Engineering Science, University of Patras, 26110 Patras, Greece; Forschungszentrum Karlsruhe, Institut für Nanotechnologie, P.O.Box 3640, 76021 Karlsruhe, Germany |
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Abstract: | It is well-known that nano-systems can have properties which are distinctly different from macroscopic systems. In this study we point out the following specific behaviour: if the particle number is decreased so that the size of the system is in the nanometer-realm, new effects emerge which reflect certain features of biological systems although the system is inorganic in nature. This behaviour is shown by realistic molecular dynamics calculations in connection with aluminum-nanoclusters at various temperatures. The clusters can transform without external influence from a metastable into a stable state, and there can be more than one stable state, that is, we observe a bifurcation in the sense of chaos-theory. The stable states can differ in both the atomic structure and the outer shape. |
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Keywords: | metastable states chaos theory molecular dynamics biological systems |
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