Extended Data Fig. 8: Polarizing optical micrograph shows the CSTC and emerging area.
From: Space-time crystals from particle-like topological solitons

The CSTC area shows a good spatial and temporal periodicity, which appears from the emerging area. White scale bar indicates 50μm. The slow axis of a phase retardation plate is labelled by the green double arrow; crossed polarizers by black double arrows.