ordered co-continuous double gyroid morphology

https://doi.org/10.1351/goldbook.OT07306
Co-continuous morphology in which a set of two gyroid-based phase domains exhibits a highly regular, three-dimensional lattice-like morphology with Ia3d space group symmetry.
Notes:
  1. The domains are composed of tripoidal units as the fundamental building structures.
  2. The two domains are interlaced.
Source:
PAC, 2004, 76, 1985. 'Definition of terms related to polymer blends, composites, and multiphase polymeric materials (IUPAC Recommendations 2004)' on page 2004 (https://doi.org/10.1351/pac200476111985)