Dielectrophoresis of nanocolloids: a molecular dynamics study

Details Dielectrophoresis of nanocolloids: a molecular dynamics study Dielectrophoresis of nanocolloids: a molecular dynamics study

2005-11-10

arxiv.org/abs/cond-mat/0511243v1

Eur. Phys. J. E 18, 133-142 (2005)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1140/epje/i2004-10157-2

Dielectrophoresis (DEP), the motion of polarizable particles in non-uniform electric fields, has become an important tool for the transport, separation, and characterization of microparticles in biomedical and nanoelectronics research. In this article we present, to our knowledge, the first molecular dynamics simulations of DEP of nanometer-sized colloidal particles. We introduce a simplified model for polarizable nanoparticles, consisting of a large charged macroion and oppositely charged microions, in an explicit solvent. The model is then used to study DEP motion of the particle at different combinations of temperature and electric field strength. In accord with linear response theory, the particle drift velocities are shown to be proportional to the DEP force. Analysis of the colloid DEP mobility shows a clear time dependence, demonstrating the variation of friction under non-equilibrium. The time dependence of the mobility further results in an apparent weak variation of the DEP displacements with temperature.

Affiliated with

Also associated with

No associations

Rating

Dielectrophoresis of nanocolloids: a molecular dynamics study 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 Dielectrophoresis of nanocolloids: a molecular dynamics study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dielectrophoresis of nanocolloids: a molecular dynamics study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-386738