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UID:20250627T095039EDT-2220A2ha5j@132.216.98.100
DTSTAMP:20250627T135039Z
DESCRIPTION:Department of Chemistry\, University of Cambridge Lensfield Roa
 d\, Cambridge UK\n	sv319 [at] cam.ac.uk\n\nAbstract\n	The most brilliant col
 ours in nature are obtained by structuring transparent materials on the sc
 ale of the wavelength of visible light. By designing the dimensions of suc
 h nanostructures\, it is possible to achieve extremely intense colouration
 s over the entire visible spectrum without using pigments or colorants. Co
 lour 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 structu
 res exists: from very ordered photonic structures [2]\, to partially disor
 dered [3]\, to completely random ones [4].\n	In this seminar\, I will intro
 duce some striking example of natural photonic structures [2-4] and share 
 some insight on their development. Then I will review our recent advances 
 to fabricate bio-mimetic photonic structures using the same material as na
 ture. Developing biomimetic structures with cellulose enables us to fabric
 ate novel photonic materials using low cost polymers in ambient conditions
  [6-7]. Importantly\, it also allows us to understand the biological proce
 sses at work during the growth of these structures in plants.\n\nView the 
 event flyer here.\n\nHave questions? Write to us administrator-MIAM.engine
 ering [at] mcgill.ca (subject: Query%20on%20Seminar%20Series)  (here).\n\n
  \n\nReferences:\n\n[1] Kinoshita\, S. et al. (2008). Physics of structura
 l colors. Rep. Prog. Phys. 71(7)\, 076401.\n	[2] Vignolini\, S. et al. (201
 2). Pointillist structural color in Pollia fruit. PNAS 109\, 15712-15716.
 \n	[3] Moyroud\, E. et al. (2017). Disorder in convergent floral nanostruct
 ures enhances signalling to bees. Nature 550\, 469.\n	[4] Burresi M. et al.
  (2014) Bright-White Beetle Scales Optimise Multiple Scattering of Light. 
 Sci. Rep. 4\, 727\n	[5] Parker R. et al. (2018) The Self-Assembly of Cellul
 ose Nanocrystals: Hierarchical Design of Visual Appearance. Adv Mat 30\, 1
 704477\n	[6] Parker R. et al. (2016). Hierarchical Self-Assembly of Cellulo
 se Nanocrystals in a Confined Geometry. ACS Nano\, 10 (9)\, 8443–8449\n	[7]
  Liang H-L. et al. (2018). Roll-to-roll fabrication of touch-responsive ce
 llulose photonic laminates\, Nat Com 9\, 4632\n\n \n
DTSTART:20210122T163000Z
DTEND:20210122T173000Z
SUMMARY:Biomimetic colour engineering from nature to applications by Prof S
 ilvia Vignolini (University of Cambridge)
URL:/miam/channels/event/biomimetic-colour-engineering
 -nature-applications-prof-silvia-vignolini-university-cambridge-327127
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