Fig. 6: Construction of a four-dimensional analogue of chiral-tube lattices.
From: Multidimensional synthetic chiral-tube lattices via nonlinear frequency conversion

a Sites of a cubic lattice constructed from the coupling orders 1, 3 and 4, which is wrapped in a fourth dimension, forming a chiral lattice. b Zoomed-in view of the dashed panel in a, with the sites in one unit cell numbered from 1 to 26