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|Title:||Speckle reduction in the small-angle light scattering technique using sample vibration|
Small-angle light scattering
|Citation:||Ng, T.W. (1997-04-30). Speckle reduction in the small-angle light scattering technique using sample vibration. Journal of Polymer Science, Part B: Polymer Physics 35 (6) : 937-943. ScholarBank@NUS Repository.|
|Abstract:||Experimental patterns obtained using the small-angle light scattering technique for thin-film polymer studies are fraught with speckles arising from the effect of interspherulitic interference. The presence of speckles hampers efforts in characterizing the spherulitic structure. Using a divergent beam increases the number of scattering sites and results in a reduction of the degree of speckling. Nevertheless, this decimates the ability of analyzing the pattern at low-scattering angles. Employing an expanded collimated beam produces the same effect but necessitates the use of specially designed optical components. This article outlines a novel technique that involves simple vibration of the polymer sample. Experimental results confirm its efficacy in reducing speckles without limiting the ability for analysis at low-scattering angles. © 1997 John Wiley & Sons, Inc.|
|Source Title:||Journal of Polymer Science, Part B: Polymer Physics|
|Appears in Collections:||Staff Publications|
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