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
Miguel hizo su tesis en el MOM, el grupo de investigación del ICMS
Jesús es nombrado vicepresidente del Grupo Especializado de Resonancia Magnética Nuclear de la Real Sociedad Española de Química.
Los premiados en el concurso de 10alamenos9 en Andalucía, ya han recibido su reconocimiento y diploma acreditativo.
El investigador del ICMSE es editor jefe de esta prestigiosa revista, en la sección Nanomateriales
El investigador recibirá esta condecoración que reconoce la excelencia en la calidad científica y en la trayectoria profesional de jóvenes promesas españolas menores de 40 años.
Seleccionado en el XX Concurso Nacional para la adjudicación de Ayudas a la Investigación en ciencias de la Vida y de la Materia
Cristina, que hizo su doctorado en el ICMS, afrontará con su investigación el reciclaje de plásticos y residuos de biomasa para la generación de biopolímertos
