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SUMMARY:IMX Seminar Series - Cellulose-based self-organized helicoidal sys
 tems
DTSTART:20240226T131500
DTEND:20240226T141500
DTSTAMP:20260307T125612Z
UID:187c5bcf34abc0d5d47cb7dd868c02d5cfb9bbf21f73c780c5b35cd9
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Maria Helena Godinho\, NOVA University Lisbon\, Portugal
 \nCellulose\, the main constituent of plants\, plays a significant role in
  forming helical structures observed across different scales\, spanning fr
 om the molecular to the nano\, micro\, and macro levels [1]. These structu
 res play a crucial role in creating structural coloration\, enhancing mech
 anical properties\, and enabling motion. This seminar begins by examining 
 molecular and nanoscale helical shapes in cellulose-based systems. Emphasi
 s is given to cellulose nanocrystals\, their interactions with water\, and
  the formation of colorful structures in cellulose derivatives when they a
 re not in equilibrium [2]. Next\, micro and millimeter scales will be exam
 ined\, and specific systems will illustrate distinct helical cellulose-bas
 ed arrangements exhibiting varying helicities and adaptive behaviors acros
 s the different length scales. Notable examples include vascular leaf peti
 oles at the micro-scale and tendrils and the awns of Erodium fruits at the
  millimeter scale [2\, 3]. The current findings suggest that significant w
 ork remains in out-of-equilibrium systems. Furthermore\, there is much to 
 be learned from nature's designs to create innovative helical functional m
 aterials featuring unique optical and mechanical properties.\n[1] “Cellu
 lose-based Biomimetics and Applications” Ana P. C. Almeida\, João P. Ca
 nejo\, Susete N. Fernandes\, Coro Echeverria\, Pedro L. Almeida and Maria 
 H. Godinho\, Advanced Materials (Review\, by invitation)\, DOI: 10.1002/ad
 ma.201703655 (2017) (by invitation) (back cover).\n[2] “Cellulose and ch
 itin twisted structures: from nature to applications” Rafaela R. da Rosa
 \, Susete N. Fernandes\, Michel Mitov and Maria Helena Godinho\, Advanced 
 Functional Materials (by invitation\, 2304286\, 2023 (DOI: 10.1002/adfm.20
 2304286))\n[3] “Spotting plants’ microfilament morphologies and nanost
 ructures” Ana P Almeida\, João Canejo\, Urban Mur\, Simon Čopar\, Pedr
 o L Almeida\, Slobodan Žumer\, Maria Helena Godinho\, Proceedings of the 
 National Academy of Sciences U.S.A.\, PNAS\, 116(27)\, 13188 (2019).\n\nBi
 o: Maria Helena Godinho obtained her PhD degree as a Nato/Invotan fellow f
 rom Laboratoire de Physique de la Matière Condensée at Nice University\,
  France\, She is an Associate Professor in Materials Science and a Researc
 her at i3N/CENIMAT (Research Center of Materials Science). From 2013 to 20
 19 she was the Vice Director and Leader Group Soft and Biofunctional Mater
 ials at School of Science and Technology\, NOVA University of Lisbon. From
  2023 – 2024 for six months (June-September 2023 and January-March 2024)
 \, she was a Full Professor with the Lars Onsager Professorship 2023\, at 
 the Norwegian University of Science and Technology (NTNU)/ Physics Departm
 ent in Norway.
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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