title: Translocation time of periodically forced polymer chains.
abstract: In this work we study the presence of both a minimum and clear oscillations in the frequency dependence of the translocation time of a polymer described as a unidimensional Rouse chain driven by a spatially localized oscillating linear potential. The observed oscillations of the mean translocation time arise from the synchronization between the very mean translocation time and the period of the external force. We have checked the robustness of the frequency value for the minimum translocation time by changing the damping parameter, finding a very simple relationship between this frequency and the correspondent translocation time. The translocation time as a function of the polymer length has been also evaluated, finding a precise L2 scaling. Furthermore, the role played by the thermal fluctuations described as a gaussian uncorrelated noise has been also investigated, and the analogies with the resonant activation phenomenon are commented.
authors.affiliation: Departamento de Física de la Materia Condensada, Universidad de Zaragoza, 50009 Zaragoza, Spain. afiascon@unizar.es
authors.forename: Alessandro
authors.initials: A
authors.lastname: Fiasconaro
authors.forename: Juan José
authors.initials: JJ
authors.lastname: Mazo
authors.forename: Fernando
authors.initials: F
authors.lastname: Falo
mesh_terms: D016014:Linear Models; D009038:Motion; D036103:Nanotechnology; D010507:Periodicity; D011108:Polymers / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors
chemical_list: D011108:Polymers