Nanowerk  December 16, 2024 An international team of researchers (Republic of Korea, Viet Nam) developed a concept of a mechanochromic strain sensor based on magnetic field self-assembled amorphous photonic arrays (APAs) of magnetoplasmonic Ag@Fe3O4 core–shell nanoparticles. The nanoparticles had tunable color spans and fully reversible mechanochromic shift when triggered by stretching or deformation events. In particular, the designed sensors exhibit dynamic color-switching covering various range of reflectance shifts in the visible wavelength region. The most apparent blue-to-red color shift was observed with 176 nm nanoparticles. They investigated the role of surface plasmon resonance coupling in producing the mechanochromic effect. The […]