. Raman-est-perpendiculaire-À-cette-surface, On focalise ainsi sur les « protubérances », qui, comme nous l'avons vu, dépassent de 2µm de la surface verre. Le faisceau laser ainsi focalisé interagit avec qu'une petite

«. Le-verre and . Sain, On voit apparaître des pics étroits, caractéristiques d'une structure cristalline. De plus, au voisinage du nombre d'ondes de 2900 cm -1 nous voyons apparaître une série de pics qui sont inexistants dans la partie verre « sain » (sans « protubérances ») de notre échantillon

. De and . Liang, les molécules de stéarate de sodium peuvent s'organiser sous forme de cristallites lamellaires. Ces molécules s'auto-alignent dans le sens de leur chaîne carbonée. Ce type d'organisation ressemble à celui que nous avons observé figure 5.12 et figure 5, p.14

. De-nouveau, si nous soustrayons le spectre Raman du stéarate de sodium au spectre des pics caractéristiques de nos « protubérances » on obtient un spectre assimilable à la famille des feldspath

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