2022
DOI: 10.1002/admi.202200051
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Mechano‐Chromic Photonic Crystals with Substrate‐Independent Brilliant Colors for Visual Sensing and Anti‐Counterfeiting Applications

Abstract: The mechano‐chromic photonic crystals (MPCs) show self‐restricted applications because they only exhibit bright reflective color on the black substrates but dim, complex, or white colors on substrates with different colors due to the superposition of incoherent scattering of light from MPCs and substrates. Herein, MPCs with substrate‐independent brilliant reflective colors, highly ordered structures, and superior mechano‐chromic performances are fabricated through the co‐assembly of same size silica and silica… Show more

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Cited by 21 publications
(18 citation statements)
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“…We prepared MPCs with substrate-independent bright structural colors, long-range order, and excellent mechanochromic properties based on the co-assembly of the same size silica and silica-polydopamine (PDA) in acrylates. 203 The silica-PDA effectively absorbs the incoherent scattering of light without interrupting the order degree of NPCs. As a result, the NPCs show vivid mechanochromic colors even on a white background, which is exceedingly difficult for other mechanochromic NPCs.…”
Section: Mechanochromic Npcsmentioning
confidence: 99%
See 1 more Smart Citation
“…We prepared MPCs with substrate-independent bright structural colors, long-range order, and excellent mechanochromic properties based on the co-assembly of the same size silica and silica-polydopamine (PDA) in acrylates. 203 The silica-PDA effectively absorbs the incoherent scattering of light without interrupting the order degree of NPCs. As a result, the NPCs show vivid mechanochromic colors even on a white background, which is exceedingly difficult for other mechanochromic NPCs.…”
Section: Mechanochromic Npcsmentioning
confidence: 99%
“…188 Very recently, our group prepared extremely sensitive artificial chameleon skin NPCs by the simple self-assembly of silica particles into acrylates. 156,201,203,288 Compared to others, these artificial chameleon skins, showing high sensitivity, fast responsiveness, long-term stability, and good reversibility, are excellent candidates for self-reporting strains of earthworms instantly by outputting different colors during peristalsis. 201 As shown in Fig.…”
Section: Sensorsmentioning
confidence: 99%
“…The unique compositions, nonclosely packed structures, and good stretchability are the keys to these characteristics. Although mechanochromic PCs (MPCs) based on nonclose-packing structures , have been widely investigated, however, most of them show negligible retroreflective colors. Both retroreflective and reflective structural colors have been used for visually sensing the strain of kinesio tapes and for anticounterfeiting (Figure b).…”
Section: Introductionmentioning
confidence: 99%
“…Inspired by these, artificial chameleon skins [6][7][8][9][10][11][12][13][14][15][16] have been extensively investigated to mimic the characteristics of the dynamic change of colors, which are potentially useful for optical devices, [17][18][19] displays, [20][21][22][23][24][25][26] sensing, [7,18,19,[27][28][29][30][31][32][33][34] printing, [11,[35][36][37][38][39] and anticounterfeiting. [8,[40][41][42][43][44][45][46][47][48][49][50]…”
Section: Introductionmentioning
confidence: 99%