| Full text | |
| Author(s): |
de Castro, Lucas D. C.
;
Oliveira, Osvaldo N., Jr.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | ACS APPLIED NANO MATERIALS; v. 5, n. 2, p. 6-pg., 2022-01-26. |
| Abstract | |
We report on silica nanoparticle/polymer film-based soft mechanochromic devices with multilayered architecture displaying structural colors that are changed reversibly under deformation cycles. The tailored architecture leverages the mechanical robustness compatible with everyday applications with highly saturated structural colors, visible with naked eyes. The reflection peak for the devices is blue-shifted, with the elongation ratio from 0% (478 nm) to 15% (455 nm). For higher ratios, the peak asymptotes to the ultraviolet wavelength region. The device can be stretched, bended, or twisted, preserving its mechanical/functional integrity. Even after several stress cycles, a continuous color-shifting is easily observed, starting from small deformations at ca. 5% elongation. The mechanochromic devices can be used to detect mechanical deformation/stress cycles with naked eyes in varied environments, including outdoor areas exposed to natural sunlight or even underwater. (AU) | |
| FAPESP's process: | 20/02938-0 - Coloured patterns based on bioinspired photonic crystals for mechanocromic applications |
| Grantee: | Lucas Daniel Chiba de Castro |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis |
| Grantee: | Osvaldo Novais de Oliveira Junior |
| Support Opportunities: | Research Projects - Thematic Grants |