Two-way rewritable and stable photonic patterns enabled by near-infrared laser-responsive shape memory photonic crystals

Abstract

A new type of near-infrared laser responsive shape memory photonic crystals that enable the fabrication of two-way rewritable photonic patterns is reported.

Bio-inspired photonic crystal patterns

“…This property is important for the repeatable use of PC substrates and PC patterns. 212,213 Tuneable PC patterns have been widely used in sensors, 67,197 displays [71][72][73] and anti-counterfeiting. 193 3.1.1 Reversible PC patterns.…”

“…11B ii,iii ). 213 Thomas et al demonstrated an inkjet printable and rewritable block copolymer structural colour display, which could be quickly written and erased over 50 times. The writing process used a modified printer with a water-based ink containing a reversible crosslinking agent.…”

“…(B) Two-way rewritable and stable photonic patterns enabled by shape memory photonic crystals responsive to near-infrared laser light. 213 Reproduced with permission from ref. 213, copyright 2019 Royal Society of Chemistry.…”

Shape‐Memory Photonic Thermoplastics from Cellulose Nanocrystals

“…This structure‐dependent color is extremely beneficial as it can be tuned, will not fade, can be mechanoresponsive [ 17 ] and does not require the use of toxic or photodegradable dyes. [ 18,19 ] SMPCs have been prepared that can respond to heat, [ 20–23 ] electric fields, [ 24 ] light, [ 25 ] mechanical deformation, [ 26 ] organic solvents [ 20,27 ] and vapors. [ 20 ] In these systems, there is a change at both the macro and microscopic scales and they are of interest for rewritable photonic devices, [ 28,29 ] multifunctional sensors, [ 20,30,31 ] rewritable paper, [ 24 ] optical coatings [ 32,33 ] and photonic skin.…”

Selective and Colorimetric Detection of p-Nitrophenol Based on Inverse Opal Polymeric Photonic Crystals

“…Photonic crystals, consisting of periodic arrangements of dielectric materials with different refractive indexes, produce color when the photonic stop bands are located in the visible range [9][10][11][12][13][14][15][16][17][18]. Because the response process of photonic crystals can be directly expressed by light diffraction signals (the structure color "naked eye" can be seen) without any marking technology or any other analytical instruments, much attention has been paid to it in the field of sensor design and application [19][20][21][22][23][24][25][26][27][28][29][30][31].…”