Nanofabrication. H. Hau Wang Argonne National Laboratory Materials Science Division email@example.com Symposium on Digital Fabrication Aug 12, 2005. Why going Nano? 1 nm = 10 -9 m. Chemistry – higher reactivity High surface area – Good for chemical and biochemical sensors
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H. Hau Wang
Argonne National Laboratory
Materials Science Division
Symposium on Digital Fabrication
Aug 12, 2005
High surface area – Good for chemical and biochemical sensors
Higher sensitivity and faster response time
Good for heterogeneous catalysis
The larger the surface area, the higher the reactivity.
High level of reaction control
UNCD Ultra-nano-crystalline diamond (ANL/CNM)
Ultra-thin and tough coating - prolong equipment life time
Carbon-nanotubes – Ultra-high mechanical strength
Near field optics, plasmonics
High density magnetic storage – nanoclusters
Ideal spring nanomagnet - High magnetization and coercivity
FIB – focused ion beam
DPN – dip pen nanolithography
Requires major facilities, control below 100 nm is a challenge, can not obtain high aspect ratio.
– The nano-scaled objects are limited to simple geometrical shape: sphere, cube, triangle, thin film, wire, tube, etc.
– No standard 3D morphological control
– Handling and Alignment are difficult
1 x 1 mm2 AFM image of self-assembled PEG-PMMA thin film showing partially ordered
5 x 5 mm2 AFM image of as-prepared AAO membrane showing domain boundary
200 nm Bi NT
– Magnetic storage
(X. M. Lin et al.)
To understand the dynamics of highly ordered nanocrystal monolayer through evaporation of a nanocrystal colloidal droplet.
(J. Phys. Chem. B 2001, 105, 3353)
Grazing Incidence Small Angle
X-ray Scattering (GISAXS)
Xiao-Min Lin Suresh Narayanan, Jin Wang
MSD/CHM Advanced Photon Source
50 nm AuNanowires
fabricated into integrated nanowire circuits. (Lieber,
Materials Science Division, MSD
Center for Nanoscale Materials, CNM
Co 20 nm/Cu 20 nm