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Figure 1
HRTEM image of bincontinous cubic ([Ia\bar 3d]) mesoporous silica crystal showing a {211} twin boundary (left) and 3D reconstructed models of the silica network of the G-twin boundary. Adapted from (Han et al., 2020BB4).

IUCrJ
Volume 7| Part 2| March 2020| Pages 146-147
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520002535