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Surface topography for pre-coated poly(ethylene imine) (PEI) films by tapping mode AFM. (a) Bare quartz substrate and (b) 5 MDa PEI on quartz. Oxidized silicon wafers with preadsorbed PEI of (c) 2 kDa and (d) 5 MDa. 

Surface topography for pre-coated poly(ethylene imine) (PEI) films by tapping mode AFM. (a) Bare quartz substrate and (b) 5 MDa PEI on quartz. Oxidized silicon wafers with preadsorbed PEI of (c) 2 kDa and (d) 5 MDa. 

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Figure 1-1. Schematic representation of the Stern model of the electric...
Figure 1-2. Pressure between two charged plates as a function of...
Figure 1-3. Schematic representation of an atomic force microscope set-up. 
Figure 1-4. Exemplary force curve showing characteristic features of...
+37 Figure 1-5. Schematic picture of tapping mode atomic force microscopy. 
Interaction forces between surfaces coated with highly branched polyelectrolytes
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  • Jan 2006
In this thesis, interactions between surfaces with adsorbed highly branched polyelectrolytes were studied with the colloidal probe technique. By studying the adsorption behavior of highly branched polyelectrolytes, the lateral distribution of the surface charge could be tuned by the appropriate adsorption conditions. By choosing different polyelecr...
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