Detachment of a single polyelectrolyte chain adsorbed on a charged surface
X. Châtellier; T. J. Senden; J.-F. Joanny; J.-M. di Meglio; X. Châtellier; Institut Charles Sadron (CNRS UPR 22), 6 rue Boussingault, 67083 Strasbourg Cedex, France; T. J. Senden; Institut Charles Sadron (CNRS UPR 22), 6 rue Boussingault, 67083 Strasbourg Cedex, France; J.-F. Joanny; Institut Charles Sadron (CNRS UPR 22), 6 rue Boussingault, 67083 Strasbourg Cedex, France; J.-M. di Meglio; Institut Charles Sadron (CNRS UPR 22), 6 rue Boussingault, 67083 Strasbourg Cedex, France
Журнал:
EPL (Europhysics Letters)
Дата:
1998-02-01
Аннотация:
We study both experimentally, with an atomic force microscope (AFM), and theoretically, using scaling arguments, the stretching of a single polyelectrolyte chain adsorbed at a planar charged surface. The main result is that the force needed to pull a monomer of the chain at a distance z from the surface reaches a plateau at distances larger than the Debye screening length of the solution.
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