We present transport measurement results on superconducting Nb films with diluted triangular arrays (honeycomb and kagom\'{e}) of holes. The patterned films have large disk-shaped interstitial regions even when the edge-to-edge separations between nearest neighboring holes are comparable to the coherence length. Changes in the field interval of two consecutive minima in the field dependent resistance R(H) curves are observed. In the low field region, fine structures in the R(H) and Tc(H) curves are identified in both arrays. Comparison of experimental data with calculation results shows that these structures observed in honeycomb and kagom\'{e} hole arrays resemble those in wire networks with triangular and T3 symmetries, respectively. Our findings suggest that even in these specified periodic hole arrays with very large interstitial regions, the low field fine structures are determined by the connectivity of the arrays
@article{arxiv.1109.1357,
title = {Wire network behavior in superconducting Nb films with diluted triangular arrays of holes},
author = {S. K. He and W. J. Zhang and H. F. Liu and G. M. Xue and B. H. Li and H. Xiao and Z. C. Wen and X. F. Han and S. P. Zhao and C. Z. Gu and X. G. Qiu},
journal= {arXiv preprint arXiv:1109.1357},
year = {2012}
}