2017
DOI: 10.1039/c7ra05622b
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Highly sensitive mechanochromic photonic gel towards fast- responsive fingerprinting

Abstract: A highly sensitive mechanochromic photonic gel based on carbon-encapsulated Fe3O4 nanoparticles embedded into N-hydroxymethyl acrylamide and N-vinylcaprolactam copolymer was fabricated toward fast-responsive fingerprinting.

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Cited by 30 publications
(21 citation statements)
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“…In the last decade, many PhC structures were demonstrated to be effective transducers for chemical and biological molecules, as well as for physical stimuli like pressure and temperature . The sensing process relies on the modification of the PhC optical response triggered by external perturbations affecting the lattice periodicity, its dielectric function or the dielectric environment.…”
Section: Applicationsmentioning
confidence: 99%
“…In the last decade, many PhC structures were demonstrated to be effective transducers for chemical and biological molecules, as well as for physical stimuli like pressure and temperature . The sensing process relies on the modification of the PhC optical response triggered by external perturbations affecting the lattice periodicity, its dielectric function or the dielectric environment.…”
Section: Applicationsmentioning
confidence: 99%
“…Utilizing magnetic colloidal crystals in multiresponsive photonic elastomers has also been the subject of research in the past decade . A hydrogel made of soft copolymer of N ‐hydroxymethyl acrylamide and N ‐vinylcaprolactam was designed to embed Fe 3 O 4 @C super‐paramagnetic nanoclusters, which are self‐assembled in 1D chain photonic structure under a magnetic field before polymerization . The mechanochromic hydrogel shows a rapid and reversible color change with ∆λ peak = 233 nm and high mechanochromic sensitivity (∆λ/σ = 53.1 nm (kPa) −1 , where σ stands for compressive pressure).…”
Section: Artificial Materialsmentioning
confidence: 99%
“…Arguably, one of the best-known examples of a natural structurally colored material is a colloidal assembly: the gem opal, the brilliant colors of which originate from domains of crystalline, close-packed arrays of silica colloids that are photonic in three dimensions. The directed self-assembly of colloids is also among the most popular bottom-up techniques to create responsive, structurally colored materials, with photonic ordering in 1, [69,73,188] 2, [79,189] or 3 [37,40,42,190] dimensions. The required colloidal building blocks are readily synthesized by preparative methods such as the Stöber process and emulsion polymerization in the correct size range to interact with visible light (100-500 nm), with low size dispersity and in some cases via scalable methodologies.…”
Section: D Colloidal Assembliesmentioning
confidence: 99%
“…1D photonic hydrogels can be prepared by using a magnetic field to order colloids of Fe 3 O 4 into a photonic, non-closepacked array, prior to fixation in the gel (Figure 14). [69,73,188] The colloids of Fe 3 O 4 form 1D photonic chains along the direction of an external magnetic field (Figure 14c), with photonic color observed looking down the chains of particles, along which the colloids are equally spaced from each other. Fixating the chains within a polymeric matrix, such as a soft PAAm or poly(Nvinylcaprolactam) (VCL) hydrogel, under a magnetic field by thermally or photochemically activated in situ polymerization affords a mechanochromic photonic polymeric material.…”
Section: D Colloidal Arraysmentioning
confidence: 99%