Fabrication of Self-organized Metal-Polymer Hybrid Structures for - - PowerPoint PPT Presentation

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Mar 24, 2023 157 likes •396 views

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

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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

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New Generation of Biomimetic Materials

Butterfly wing-scale:structure color

Fibers, coating, photonics

Moth-eye structure:anti reflectant

Anti-refl flection fi film photonics

Lotus Effect：hydrophobic

coating, painting, anti-fogging Painting, coating. . Anti-fauling

Sharkskinriblet

Gecko Hand：

adhesion

self-cleaning surface

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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

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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4 3 2 1 Three phase line Water droplet 1 Substrate Condensation

f water

Evaporation

f 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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µ
µ
Optical Properties of Metalized Honeycomb Films

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4 5 6 7 8 . 2 4 6 8

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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 i h g f e d c b a 800 600 400 200 500 1000 1500 2000 Intensity (CPS) 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

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30µm Aggregate of neurons 30µm

Proliferation of Stem Cells

Neurite Neuron 30µm

Pore-size Effect on Cultured Hippocampus Neural Cells

n 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).

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Self-Organized Superhydrophobic Hybrid Nano-& Micro-Materials with Controllable Adhesive Force

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Water droplet manipulation by electric stimuli

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Multi Functional Properties Based on Hierarchically Structured Biological Surfaces.

Toward Biomimetic Material Design -

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