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(PAH/PSS) polyelectrolytes layers observed in water |
| PEI layer observed in water |
| PEI layer measured in water (1.3 nm) |
| (PAH/PSS) polyelectrolytes layers observed in salt solution |
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Microstructures on polyelectolytes layer |
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| Collaboration: M.Leroy, C.Poleunis, P.Bertrand, A.Delcorte (PCPM-UCL, Louvain-la-Neuve, BELGIUM) |
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|  | | Direct and fast analysis of the sample |
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| Ability to analyse soft materials(non-contact technique) |
| | | Possibility of in-situ analysi | | | | |
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|  | | SiO2 Surf |
|  | | Your Optical Microscope : upright, reflected light (BF challenging, DIC mode for guaranteed success) | | | | |
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Polyelectrolyte film was built by 'Layer by Layer' method. After a pirhana and PEI primer pre-treatment, a standard Surf was successively dipping in poly(sodium-4-styrene sulfonate), PSS and Poly(allylamine hydrochloride), PAH aqueous solutions. A microstructuration covering 20 to 50% of the surface is observed. The Sarfus image shows this structuration on PEI/(PSS/PAH)2 layer.
(scale bar: 50µm) |
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