Correction to ‘Holographic sol–gel monoliths: optical properties and application for humidity sensing’

R. Soc. open sci. 5, 172465. (Published 2 May 2018). (doi:10.1098/rsos.172465)

Figure 5 in the published paper is incorrect. The correct figure is shown below:

Figure 5.

Photographs of produced monoliths: (a) SiO₂, (b) TiO₂, (c) ZrO₂, (d) 3 wt% CNT@SiO₂, (e) 3 wt% CNT@TiO₂ and (f) 3 wt% CNT@ZrO₂.