Moiré patterns of curved line quasi-periodic structures

In this work by using local reciprocal vector concept we introduce a considerable number of quasi-periodic structures where each of them constructed by a set of curved lines with varying period. By using a simple and very comprehensive recently proposed method, formulations and characterizations of the various moiré patterns of different pairs of curved lines quasi-periodic structures are presented. Some advantages of the concept of local reciprocal vector in the area of curved lines quasi-periodic structures are clarified.

Moiré techniques; Fringe analysis; Metrology; Gratings