Colour Engineering: from nature of applications.
Dra. Silvia Vignolini (University of Cambridge).
Jueves 4 de julio de 2019. 11:00 h.
Salón de Grados cicCartuja2
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 [1]. 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 [2], to partially disordered [3], to completely random ones [4].
In this seminar, I will introduce some striking example of natural photonic structures [2-4] and review our recent advances to fabricate bio-mimetic photonic structures using the same material as nature. Biomimetic with cellulose-based architectures enables us to fabricate novel photonic structures using low cost materials in ambient conditions [6-7]. Importantly, it also allows us to understand the biological processes at work during the growth of these structures in plants.
[1] Kinoshita, S. et al. (2008). Physics of structural colors. Rep. Prog. Phys. 71(7), 076401. [2] Vignolini, S. et al. (2012). Pointillist structural color in Pollia fruit. PNAS 109, 15712-15716.
[3] Moyroud, E. et al. (2017). Disorder in convergent floral nanostructures enhances signalling to bees. Nature 550, 469.
[4] Burresi M. et al. (2014) Bright-White Beetle Scales Optimise Multiple Scattering of Light. Sci. Rep. 4, 727
[5] Parker R. et al. (2018) The Self-Assembly of Cellulose Nanocrystals: Hierarchical Design of Visual Appearance. Adv Mat 30, 1704477
[6] Parker R. et al. (2016). Hierarchical Self- Assembly of Cellulose Nanocrystals in a Confined Geometry. ACS Nano, 10 (9), 8443–8449
[7] Liang H-L. et al. (2018). Roll-to-roll fabrication of touch-responsive cellulose photonic laminates, Nat Com 9, 4632
El ganador ahora pasará a concursar en la Fase Internacional.
El investigador del ICMS ha sido premiado en la categoría Investigación en Economía Circular
El investigador que realizó su doctorado en el ICMS en el Grupo MOM, ha obtenido este reconocimiento de su carrera.
El pasado viernes 20 de mayo a las 12:00h el ganador y las tres accésits recogieron sus galardones.
La investigadora del ICMS es premiada por su labor docente, educativa e investigadora
El investigador del ICMS es galardonado con el Premio a la Trayectoria Científica de Excelencia FISOCAT 2022 Junior.
Se abre el plazo para la presentación de solicitudes hasta el 18 de mayo de 2022.