Bio-inspired Photonics: from nature to applications.
Jacucci G., Vignolini S.
Relazione su invito
II - Fisica della materia
Aula 32B-2 - Martedì 18 h 09:00 - 13:00
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The most brilliant colours in nature are obtained by structuring transparent materials on the scale of the wavelength of visible light. By controlling/designing the dimensions of such nanostructures, it is possible to achieve extremely intense colourations over the entire visible spectrum without using pigments or colorants. Colour obtained through structure, namely structural colour, is widespread in the animal and plant kingdom. Such natural photonic nanostructures are generally synthesised in ambient conditions using a limited range of biopolymers. Given these limitations, an amazing range of optical structures exists: from very ordered photonic structures, to partially disordered, to completely random ones. In this seminar, I will introduce some striking examples of natural photonic structures and review our recent advances to fabricate bio-mimetic photonic structures using the same materials as nature. Biomimetic with cellulose-based architectures enables us to fabricate novel photonic structures using low cost materials in ambient conditions. Importantly, it also allows us to understand the biological processes at work during the growth of these structures in plants.