Pink noise of ionic conductance through single artificial nanopores revisited

Details Pink noise of ionic conductance through single artificial nanopores revisited Pink noise of ionic conductance through single artificial nanopores revisited

2010-07-22

arxiv.org/abs/1007.3850v2

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevLett.105.260602

We report voltage-clamp measurements through single conical nanopore obtained by chemical etching of a single ion-track in polyimide film. Special attention is paid on the pink noise of the ionic current (i.e. $1/f$ noise) measured with different filling liquids. The relative pink noise amplitude is almost independent of concentration and pH for KCl solutions, but varies strongly using ionic liquids. In particular we show that depending on the ionic liquid, the transport of charge carriers is strongly facilitated (low noise and higher conductivity than in the bulk) or jammed. These results show that the origin of the pink noise can be ascribed neither to fluctuations of the pore geometry nor to the pore wall charges but rather to a cooperative effect on ions motion.

Affiliated with

Also associated with

No associations

Rating

Pink noise of ionic conductance through single artificial nanopores revisited does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Pink noise of ionic conductance through single artificial nanopores revisited, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pink noise of ionic conductance through single artificial nanopores revisited will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-612238