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A Hierarchical Nanoparticle-in-Micropore Architecture for Enhanced Mechanosensitivity and Stretchability in Mechanochromic Electronic Skins
- Source :
- Advanced materials (Deerfield Beach, Fla.). 31(25)
- Publication Year :
- 2018
-
Abstract
- Biological tissues are multiresponsive and functional, and similar properties might be possible in synthetic systems by merging responsive polymers with hierarchical soft architectures. For example, mechanochromic polymers have applications in force-responsive colorimetric sensors and soft robotics, but their integration into sensitive, multifunctional devices remains challenging. Herein, a hierarchical nanoparticle-in-micropore (NP-MP) architecture in porous mechanochromic polymers, which enhances the mechanosensitivity and stretchability of mechanochromic electronic skins (e-skins), is reported. The hierarchical NP-MP structure results in stress-concentration-induced mechanochemical activation of mechanophores, significantly improving the mechanochromic sensitivity to both tensile strain and normal force (critical tensile strain: 50% and normal force: 1 N). Furthermore, the porous mechanochromic composites exhibit a reversible mechanochromism under a strain of 250%. This architecture enables a dual-mode mechanochromic e-skin for detecting static/dynamic forces via mechanochromism and triboelectricity. The hierarchical NP-MP architecture provides a general platform to develop mechanochromic composites with high sensitivity and stretchability.
- Subjects :
- Materials science
Electronic skin
Soft robotics
Nanoparticle
Color
Nanotechnology
02 engineering and technology
Tensile strain
010402 general chemistry
01 natural sciences
Wearable Electronic Devices
Tensile Strength
General Materials Science
Mechanical Phenomena
chemistry.chemical_classification
Normal force
Mechanical Engineering
Microporous material
Polymer
021001 nanoscience & nanotechnology
0104 chemical sciences
chemistry
Mechanics of Materials
Nanoparticles
Stress, Mechanical
0210 nano-technology
Hydrophobic and Hydrophilic Interactions
Porosity
Subjects
Details
- ISSN :
- 15214095
- Volume :
- 31
- Issue :
- 25
- Database :
- OpenAIRE
- Journal :
- Advanced materials (Deerfield Beach, Fla.)
- Accession number :
- edsair.doi.dedup.....dcd89e70cdc786d81bfa99b586d398eb