
Nanotechnology is an emerging/enabling technology and of utmost
importance. Two main approaches are used in nanotechnology.
In the bottom-up approach, materials and devices are built from
molecular components that assemble themselves chemically by
principles of molecular recognition. In the top-down approach,
nano-objects are constructed from larger entities with or without
atomic-level control. The impetus for nanotechnology comes from a
renewed interest in interface and colloid science, coupled with a new
generation of analytical tools such as the atomic force microscope
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