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DTSTAMP:20260615T233225Z
UID:https://www.mr.mpg.de/events/18094/10694
DTSTART:20190517T090000Z
DTEND:20190517T103000Z
CLASS:PUBLIC
CREATED:20190319T122244Z
DESCRIPTION:Bio-inspired Material Assembly and Applications Abstract In nat
 ure\, helical macromolecules such as collagen\, chitin and cellulose are c
 ritical to the morphogenesis and functionality of various hierarchically s
 tructured materials. During morphogenesis\, these chiral macromolecules ar
 e secreted and undergo self-templating assembly\, a process whereby multip
 le kinetic factors influence the assembly of the incoming building blocks 
 to produce non-equilibrium structures. A single macromolecule can form div
 erse functional structures when self-templated under different conditions.
  Collagen type I\, for instance\, forms transparent corneal tissues from o
 rthogonally aligned nematic fibers\, distinctively colored skin tissues fr
 om cholesteric phase fiber bundles\, and mineralized tissues from hierarch
 ically organized fibers. Nature’s self-templated materials surpass the f
 unctional and structural complexity achievable by current top-down and bot
 tom-up fabrication methods. However\, self-templating has not been thoroug
 hly explored for engineering synthetic materials. In my seminar\, I will d
 emonstrate a facile biomimetic process to create functional nanomaterials 
 utilizing chiral colloidal particles (M13 phage). A single-step process pr
 oduces long-range-ordered\, supramolecular films showing multiple levels o
 f hierarchical organization and helical twist. Using the self-templating m
 aterials assembly processes\, we have created various biomimetic supramole
 cular structures. The resulting materials show distinctive optical and pho
 tonic properties\, functioning as chiral reflector/filters and structural 
 color matrices. Through the directed evolution of the M13 phages\, I will 
 also show how resulting materials can be utilized as functional nanomateri
 als for biomedical\, biosensor and bioenergy applications<sup>1-3</sup>. R
 eferences: Chung\, W.-J.\, Oh\, J.-W.\, Kwak\, K.-W.\, Lee\, B.-Y.\, Mayer
 \, J.\, Wang\, E.\, Hexemer\, A.\, &amp\; Lee\, S.-W. Biomimetic Self-Temp
 lating Supramolecular Structures. <i>Nature</i> 478\, 364 (2011).Lee\, B.-
 Y.\, Zheng\, J.\, Zueger\, C.\, Chung\, W.-J.\, Yoo\, S.-Y.\, Wang\, E.\, 
 Meyer\, J.\, Ramesh\, R.\, Lee\, S.-W.\, Virus-based Piezoelectric Energy 
 Generation. <i>Nature Nanotechnology</i>. 7\, 351 (2012).Oh\, J.-W.\, Chun
 g\, W.-J.\, Heo\, K\, Jin\, H.-E.\, Lee\, B.-Y.\, Wang E.\, Meyer\, J.\, K
 im C.\, Lee\, S.-Y.\, Kim\, W.-G.\, Zemla\, M\, Auer\, M<sup> </sup>\, Hex
 emer\, A\, and Lee\, S.-W.\, Biomimetic Virus-Based Colourimetric Sensors\
 , <i>Nature Communication</i> 5\, Article number: 3043 (2014).
LAST-MODIFIED:20190509T062141Z
LOCATION:MPI for Medical Research\, Room: Seminar Room A/B
ORGANIZER;CN=Prof. Dr. Joachim Spatz:mailto:pr@mpimf-heidelberg.mpg.de
SUMMARY:Rudolf Mößbauer Colloquium with Seung-Wuk Lee (UC Berkeley): Rudo
 lf Mößbauer Colloquium with Seung-Wuk Lee (UC Berkeley)
URL;VALUE=URI:https://www.mr.mpg.de/events/18094/10694
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