We study planar rectangular-like arrays composed by macroscopic dipoles (magnetic bars with size around a few centimeters) separated by lattice spacing a and b along each direction. Physical behavior of such macroscopic artificial spin ice (MASI) systems are shown to agree much better with theoretical prediction than their micro- or nano-scaled counterparts, making MASI "almost ideal prototypes" for readily naked-eye visualization of geometrical frustration effects.
@article{arxiv.1909.05296,
title = {Naked-eye visualization of geometric frustration effects in macroscopic spin ices},
author = {R. S. Gonçalves and A. C. C. Gomes and R. P. Loreto and C. I. L. de Araujo and F. S. Nascimento and W. A. Moura-Melo and A. R. Pereira},
journal= {arXiv preprint arXiv:1909.05296},
year = {2020}
}