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  • Title: Slow energy relaxation of macromolecules and nanoclusters in solution.
    Author: Piazza F, De Los Rios P, Sanejouand YH.
    Journal: Phys Rev Lett; 2005 Apr 15; 94(14):145502. PubMed ID: 15904073.
    Abstract:
    Many systems in the realm of nanophysics from both the living and the inorganic world display slow relaxation kinetics of energy fluctuations. In this Letter we propose a general explanation for such a phenomenon, based on the effects of interactions with the solvent. Within a simple harmonic model of the system fluctuations, we demonstrate that the inhomogeneity of coupling to the solvent of the bulk and surface atoms suffices to generate a complex spectrum of decay rates. We show for myoglobin and for a metal nanocluster that the result is a complex, nonexponential relaxation dynamics.
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