cicCartuja Centro de Investigaciones Científicas de la cartuja
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
La red generará conocimiento sobre los mecanismos de respuesta rápida de las plantas a situaciones ambientales cambiantes
El cicCartuja y el colegio Salesiano de Alcalá firman un convenio de colaboración en materia de formación y divulgación
Un libro para avanzar en el conocimiento de los mecanismos moleculares que propician el funcionamiento de la célula
El trabajo premiado explora el uso del bambú como material estructural sostenible en el diseño de invernaderos
El trabajo desarrollado en el ICMS ha sido reconocido como Mejor Proyecto Fin de Carrera de Ingeniería de Materiales
La red es de investigación multidisciplinar y transferencia de conocimiento en los campos de la salud, agricultura y energía.
El galardón reconoce sus investigaciones en el ámbito de las superficies nanoestructuradas funcionales.
