fabrication of self-organized metal-polymer hybrid
TRANSCRIPT
Fabrication of Self-organized Metal-Polymer
Hybrid Structures for Optics and Photonics
- Biomimetic Photonic Materials Design - �
Masatsugu SHIMOMURA, Hiroshi YABU, Daisuke ISHII, and
Yuji HIRAI�
Institute of Multidisciplinary Research for Advanced Materials
WPI Research Center : Advanced Institute for Materials Research,
Tohoku University
JST-CREST�
New Generation of Biomimetic Materials
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Butterfly wing-scale:structure color
Fibers, coating, photonics
Moth-eye structure:anti reflectant
Anti-reflection film photonics
Lotus Effect:hydrophobic
coating, painting, anti-fogging Painting, coating.. Anti-fauling
Sharkskin riblet�
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Gecko Hand:
adhesion
self-cleaning surface
Japanische Miso Suppe�� Wine Legs�
Pattern formation by Self-organization
Novel Nano Materials�
Ilya Prigogine
Self-Organized Patterns in Daily Life
Dissipative structures Far from thermal equilibrium
General physical phenomena
for any materials in any scale
Benard convection Fingering instability Dewetting phenomenon
Coffee Stain�
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Japanische Miso Suppe�� Wine Legs�
Pattern formation by Self-organization
Novel Nano Materials�
Ilya Prigogine
Self-Organized Patterns in Daily Life
Dissipative structures
General physical phenomena
for any materials in any scale
Benard convection Fingering instability Dewetting phenomenon
Coffee Stain�
Breath figures
(dewing)
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Casting of Polymer Solution under High-Humid Condition
What's happening?
In-situ optical microscopy of solution surface during solvent evaporation shows �
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Three phase line
Water
droplet
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Substrate
Condensation
of water
Evaporation
of solvent
Close packing
by capillary force
Polymer solution
Condensed water droplets
Top view
a b
Honeycomb Patterned Polymer Film
Prepared under Humid Condition
water droplets condensed on polymer solution act as template
SEM image schematic formation mechanism
100μm
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Superhydrophobic Pincushion Structure�
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Optical Properties of Metalized Honeycomb Films
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Pincushion films
Silver pincushion films
30 μm
(b)
30 μm
(c)
50 μm
(d)
Honeycomb-patterned
films
(a)
Peeling off
Silver
deposition
Glass
Silver
Polymer
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a
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800
600
400
200
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Inten
sity (C
PS
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Raman Shift (cm-1)
(a)
0.5
5.0
50
50 flat
pincushion
pincushion
pincushion
(b)
5 �m
Hot spot
(c)
1 �m
Silver Pincushion Arrays Prepared by Self-Organization and Vapor Deposition
Enhance Raman Scattering
Yuji Hirai, Hiroshi Yabu, Yasutaka Matsuo, Kuniharu Ijiro, and Masatsugu Shimomura
30μm
Aggregate of neurons
30μm
Proliferation of Stem Cells
Neurite Neuron
30μm
Pore-size Effect on Cultured Hippocampus Neural Cells
on Honeycomb Patterned Films
Differentiation to Neuron Differentiation to Neuron
A.Tsuruma, M.Tanaka, N.Fukushima, M.Shimomura
e-J. Surf. Sci. Nanotech 3, 159-164 (2005).
Self-Organized Superhydrophobic Hybrid Nano-&
Micro-Materials with Controllable Adhesive Force
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Water droplet manipulation by electric stimuli �
Multi Functional Properties Based on
Hierarchically Structured Biological Surfaces.
- Toward Biomimetic Material Design - ��
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