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Polymer translocation induced by a bad solvent

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Lörscher, Christopher
dc.contributor.author Ala-Nissilä, Tapio
dc.contributor.author Bhattacharya, Aniket
dc.date.accessioned 2015-04-28T09:43:08Z
dc.date.available 2015-04-28T09:43:08Z
dc.date.issued 2011
dc.identifier.citation Lörscher, Christopher & Ala-Nissilä, Tapio & Bhattacharya, Aniket. 2011. Polymer translocation induced by a bad solvent. Physical Review E. Volume 83, Issue 1. P. 011914/1-10. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.83.011914. en
dc.identifier.issn 1539-3755 (printed)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/15776
dc.description.abstract We study polymer translocation through a nanopore subject to conformational differences created by putting two different solvents at the cis and trans compartments using Langevin dynamics in three dimensions (3D). Initially a fraction of the chain is placed in a good solvent at the cis side and the rest of the chain at the trans side is immersed in a bad solvent where it forms a globule. We study several aspects of the translocating chain as a function of the strength of the interaction ɛ/kBT for the bad solvent, where the temperature T is kept below the Θ temperature for the specific bead-spring model that we have used to describe the chain. For ɛ/kBT⩾1 we find the mean first passage time ⟨τ⟩~(ɛkBT)−1 and ⟨τ⟩~N1.1±0.05. In that regard, translocation under solvent asymmetry is similar to the case of driven translocation under a bias inside the pore. However, the globule formed at the trans in the immediate vicinity of the pore readily absorbs the incoming particles making the translocation process faster than the driven translocation. Our simulation results for long chains and ɛ/kBT⩾1 agree well with a theoretical prediction by Muthukumar [M. Muthukumar, J. Chem. Phys. 111, 10371 (1999).]. en
dc.format.extent 011914/1-10
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society (APS) en
dc.relation.ispartofseries Physical Review E en
dc.relation.ispartofseries Volume 83, Issue 1
dc.rights © 2011 American Physical Society (APS). http://www.aps.org en
dc.subject.other Physics en
dc.title Polymer translocation induced by a bad solvent en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder American Physical Society (APS)
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Teknillisen fysiikan laitos fi
dc.contributor.department Department of Applied Physics en
dc.subject.keyword polymer translocation en
dc.subject.keyword Langevin dynamics en
dc.subject.keyword translocating chains en
dc.identifier.urn URN:NBN:fi:aalto-201504272436
dc.type.dcmitype text en
dc.identifier.doi 10.1103/physreve.83.011914
dc.type.version Final published version en


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