Most transparent material
- Who
- Ivan Smalyukh
- What
- 99.5-99.7 percentage
- Where
- United States (Boulder)
- When
- 26 May 2026
The most transparent material has a total visible transmission percentage of 99.5-99.7%, and was achieved by Ivan Smalyukh and the University of Colorado Boulder (all USA) in Boulder, USA, on 26 May 2026.
MOCHI is a transparent solid material designed to provide heat insulation while letting almost all visible light pass through. A sample approximately 1 mm thick was tested at the University of Colorado Boulder, surpassing their previous record of 97-99%.