Question

advantages and disadvantages of top down and bottom up approach in nanofabrication

Answer 1

Answer:

The advantages and disadvantages of top down and bottom up approaches in nanofabrication are as follows. Advantages of top down approach. (1) Well-formed techniques and is the main part of micro fabrication. Disadvantages of top down approach. (1) Big tolls are available and only useful for nano fabrication. (2) There is not much available wavelength for tool and light. Advantages of Bottom up approach. (1) Rather smaller structures can be made compared to top-down. (2) Massive parallel fabrication can be done. Disadvantages of bottom up approach. (1) Needs compatible surfaces and molecules. (2) There are less tools for handling atoms and molecules.