Fig. 7
From: Stretchable and reflective displays: materials, technologies and strategies
(Figure reproduced from a [53], Copyright 2003, Springer Nature; b [54], Copyright 2017, Springer Nature; c, d [59], Copyright 2011 WILEY-VCH Verlag GmbH & Co. KGaA; e [62], Copyright 2018, The Author(s), f,g [65], Copyright 2011, American Chemical Society)
1D Photonic crystals for mechanochromic applications a Structural color from morpho butterfly wings. b Morpho ridges and lamella structures with alternating layers of air and natural material. c 1D photonic crystals with a PS-b-P2VP block copolymer. d Mechanochromic color changes of the block copolymer as a function of compression. e Block copolymer embedded PDMS elastomer changes color from red to blue by applied stretch. f Lamella structure of poly(dodecyl glycidyl itaconate) lipid bilayer/poly acrylamide hydrogel. g Mechanochromic demonstration of the hydrogelÂ