These bismuth nanostructures, developed in Madrid, enable the generation of dynamic colors and the detection of environmental changes with very high sensitivity. The results, published in the journal Advanced Optical Materials, open new avenues for the development of monitoring devices, photonics, and advanced optical technologies.
To conduct the study, the team fabricated bismuth nanostructures on the surface of commercial DVDs, using the disc's grooves as a template. This process is simple and low-cost, allowing for easy structure creation. They subsequently analyzed how light interacted with these nanostructures, observing clear color changes when altering the light's polarization or the surrounding environment's composition.
In summary, by employing a straightforward manufacturing process and using bismuth—an abundant, low-toxicity material—researchers have developed promising nanostructures for chemical and biological sensors, as well as for future applications in photonics and structural color technologies.
