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SEM
Template-assisted nanostructuring (Overview)
Self-assembled diblock copolymer nanostructure
Mesoporous gyroid film on conducting FTO
Electrodeposition of functional materials: Ni, NiO, V2O5, TiO2, ...
Selective removal of organic template
Assembly of functional devices
Versatile method
E. Crossland et al., Nano Letters, 2009, 9(8):2807-2812
E. Crossland et al., Nano Letters, 2009, 9(8):2813-2819
Replica
Structural color
Where does colour come from?
Pigment colours Structural colours
white light
bright, pure, directional
- Iridescence -
red
blue
pigment
Scattered red light - rest of light absorbed
white light
9
Nature is more complex
• Urania butterfly
10
Nature is more complex
• Morpho butterfly
Replica
12
Nature is more complex
• Papilio palinurus
13
Nature is more complex
• Japanese jewel beetle
400 nm
TEM - micrograph
14
Nature is more complex
• Japanese jewel beetle