title: Dynamics of polymer nanoparticles through a single artificial nanopore with a high-aspect-ratio.
abstract: The development of nanometric Coulter counters for nanoparticle detection is an attractive and promising field of research. In this work, we have studied the influence of the nanopore surface state on charged polymer nanoparticle translocations. To make this, the translocation of carboxylate modified polystyrene microspheres (diameter 40, 70 and 100 nm) has been investigated through two kinds of high aspect ratio nanopores (negative and uncharged). The latter were tailored by a single track-etched and atomic layer deposition technique. It was shown that the mobility and the energy barrier are strongly dependent on nanopore surface charge. Typically if the latter exhibits negative surface charge, the microsphere mobility increases and the global energy barrier of entrance inside the nanopore decreases with its diameter, converse to the uncharged nanopore.
authors.affiliation: Institut Européen des Membranes, UMR5635 CNRS-UM2-ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France. sebastien.balme@univ-montp2.fr.
authors.forename: Simon
authors.initials: S
authors.lastname: Cabello-Aguilar
authors.forename: Adib Abou
authors.initials: AA
authors.lastname: Chaaya
authors.forename: Mikhael
authors.initials: M
authors.lastname: Bechelany
authors.forename: Céline
authors.initials: C
authors.lastname: Pochat-Bohatier
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Balanzat
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Janot
authors.forename: Philippe
authors.initials: P
authors.lastname: Miele
authors.forename: Sébastien
authors.initials: S
authors.lastname: Balme