2022
DOI: 10.1002/advs.202202897
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Color‐Tuning Mechanism of Electrically Stretchable Photonic Organogels

Abstract: In contrast to nano‐processed rigid photonic crystals with fixed structures, soft photonic organic hydrogel beads with dielectric nanostructures possess advanced capabilities, such as stimuli‐responsive deformation and photonic wavelength color changes. Recenlty, advanced from well‐investigated mechanochromic method, an electromechanical stress approach is used to demonstrate electrically induced mechanical color shifts in soft organic photonic hydrogel beads. To better understand the electrically stretchable … Show more

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Cited by 13 publications
(6 citation statements)
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“…7 a). This is due to the vertical contraction of nano-convex structures as a result of substrate’s Poisson’s ratio 14 , 28 . Thus, for higher strain above 50%, the color returned to the initial one (blue) and changed with another cycle.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…7 a). This is due to the vertical contraction of nano-convex structures as a result of substrate’s Poisson’s ratio 14 , 28 . Thus, for higher strain above 50%, the color returned to the initial one (blue) and changed with another cycle.…”
Section: Resultsmentioning
confidence: 99%
“…One-dimensional photonic crystals for strain sensor have been fabricated using block copolymer 10 , 11 . 2D or 3D photonic crystals such as plasmonic 12 , grating 13 , close-packed 14 16 , nonclose-packed nanoparticles (NPs) 17 , and inverse opal structure 18 , 19 have been reported for strain sensors. The principle of these structures is that stretching will lead to the change of crystalline lattice, which results in the color shift of the devices.…”
Section: Introductionmentioning
confidence: 99%
“…[60] To meet the requirements of dynamic display for color-change speed, many scientists have focused on dielectric elastomers that can rapidly expand and contract under voltage. [61][62][63][64] By compounding a PhC structure on a dielectric elastomer or directly preparing a PhC from a dielectric elastomer, the expansion and contraction of the dielectric elastomer under voltage action lead to the changes in the lattice spacing of the PhC. These PhC displays based on dielectric elastomers can achieve fast color switching within 1 s (Figure 3C).…”
Section: Electric Driving Phc Displaymentioning
confidence: 99%
“…Among them, electrochromic PCs are considered to exhibit significant potential in electronic displays, sensors, and smart materials, because of their sensitive responsive patterns, precise electronic properties, and stable color generation capabilities. The electrically modifiable lattice constant is usually used as a core factor in most studied electrochromic PCs devices to tune the PBG, mainly by electrically driving a volume-variable polymer to change lattice, such as polyacrylamide, polydimethylsiloxane, PProDOTBT and so on. Another strategy to tune the lattice constants is the migration and rearrangement of colloidal particles in PCs.…”
Section: Introductionmentioning
confidence: 99%