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DTSTAMP:20240328T153748Z
UID:https://www.mr.mpg.de/events/18094/14167231
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 applications1-3. R
eferences: Chung\, W.-J.\, Oh\, J.-W.\, Kwak\, K.-W.\, Lee\, B.-Y.\, Mayer
\, J.\, Wang\, E.\, Hexemer\, A.\, &\; Lee\, S.-W. Biomimetic Self-Temp
lating Supramolecular Structures. Nature 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. Nature Nanotechnology. 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 \, Hex
emer\, A\, and Lee\, S.-W.\, Biomimetic Virus-Based Colourimetric Sensors\
, Nature Communication 5\, Article number: 3043 (2014).
LAST-MODIFIED:20190509T062141Z
LOCATION:MPI for Medical Research\, Room: Seminar Room A/B
ORGANIZER:Prof. Dr. Joachim Spatz
SUMMARY:Rudolf Mößbauer Colloquium with Seung-Wuk Lee (UC Berkeley): Rudo
lf Mößbauer Colloquium with Seung-Wuk Lee (UC Berkeley)
URL:https://www.mr.mpg.de/events/18094/14167231
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