Download Motivation

NanoScience & NanoTechnology
Motivation
MACRO
~10o m
MICRO
[mm]
~10-6 m
NANO
[nm]
~10-9 m
Industries
• Energy
• Electronics
• Pharmaceutical
• Bio-Medical
Energy:
Electronics-Information:
Bio-Medical
Drug
Delivery
Fuel
Cell
Storage
(nano-particles)
Nano
Science &
Technology
Selected Areas:
 Fuel Cells, Solar Cells,
Lubrication
 Storage, Transistor (Gates)
 Drug Delivery
 Implants
NanoScience & NanoTechnology
Motivation: Nanocellular Growth
Tendon Cell Growth
Structured surface
-> directed growth
Growth Inhibited on Nanopatterned Surfaces
Nanoarray in
fused silica
Nano- patterned ->
growth inhibited
Unstructured surface
-> growth randomly
C.D.W. Wilkonson et al., Mat. Sci. and Eng. C, 19
(2002) 263
NanoScience & NanoTechnology
Motivation: Carbon Nano-Foam
The creation of a molecular structure involves “atom-to-atom” “assembly” under
appropriate physical conditions and rate.
Laser ablation is one possible avenue to create man-made materials.
E.g., from graphite:
 Fullerenes and Carbon Nanotubes
 Amorphous Carbon (Films)
Carbon Nano-Foams
Granular low density nanofoam:
TEM image shows the freestanding fractal structure of the
carbon foam. The foam consist of
a network of interconnected
carbon clusters of ~ 6nm in size
A.V. Rode et al., Appl. Phys. A 70, (2000) 135