CREATION OF NANO DEVICES:
The creation of the nano devices can be done using any of the two techniques that are available. They are
· Top-down approach
· Bottom-up approach
CHALLENGES FACED BY NANOROBOTS:
While designing nonorobots in nanoscale dimensions there should be a better understanding of how matter behaves on this small scale. Matter behaves differently on the nanoscale than it does at larger levels. So the behaviour of the nanorobots must be taken care so that the do not affect us both inside and outside the body. Other challenges apply specifically to the use of nanostructures within biological systems. Nanostructures can be so small that the body may clear them too rapidly for them to be effective in detection or imaging. Larger nanoparticles may accumulate in vital organs, creating a toxicity problem. So we need to consider these factors as they anticipate how nanostructures will behave in the human body and attempt to create devices the body will accept.
