HEPTAGONAL QUASICRYSTALS: CONSTRUCTION OF 2D LATTICES AND DEMONSTRATIONS USING LASER POINTERS-CONCLUDING PART

Photographic slides of an aperiodic heptagonal tiling were used as two-dimensional dif-fraction gratings (as a standard approach) to describe and demonstrate the basic properties of heptagonal quasicrystals. The paper completes our earlier two publications dealing with 1) Penrose (decagonal) and Ammann (octagonal) quasicrystals and 2) dodecagonal quasicrystals, the diffraction gratings of which were constructed and presented in an analogous manner.

Automated summary

Photographic slides of an aperiodic heptagonal tiling were used to demonstrate the properties of heptagonal quasicrystals. This paper complements earlier publications on decagonal, octagonal, and dodecagonal quasicrystals, which were also studied using diffracting gratings.