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Explain top down and bottom up approaches in nanotechnology.
written 7.9 years ago by gravatar for neeta.vanage neeta.vanage • 880 modified 3.9 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

Subject: Applied Physics 2

Topic: Nano science And Nanotechnology

Difficulty: Medium
engineering physics
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written 7.8 years ago by gravatar for neeta.vanage neeta.vanage • 880

Top down: - In this bulk material is reduced in size to nano scale pattern. Successive slicing of bulk material is done to get particles of nano-size. But this approach is most likely to introduce internal stress, surface defects and contamination. Such imperfections may affect physical properties and surface …

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