Question
Discuss Top-down and Bottom-up approach with suitable sketch. List out the various methods of Top-down and Bottom-up approach.
Answer :
Word Count : 264
_______ ___ _____ __________ _____ _______ __________ _________.
__________ __________ _____ __________ _______ _________ _______ ___ _________ _____ ________.
____ ______ _____ _______ _______.
_____ ____ ____ __________ _______ ___ ____ _____ _____ _____.
____ ____ ____ _____ _______ __________ ________ ______ ______ ____.
___ ________ _______ ______ _______ ________ ________ _____ ________ _________ ______ _______.
____ _____ __________ ___ __________ _________ _________ ______.
______ _____ _____ _____ _____ ___ ________ _____ _____ _____ _______.
____ _______ _______ ________ ______ ________.
________ ________ ___ __________ _____ ______ ________ _____ _________ ___ _______.
_________ _____ _________ _________ _____ ______ _____ _______.
_______ ____ _____ __________ ________ _____ ______ __________ ________ _________.
_______ __________ ____ _________ __________ _____ _________ _________ ________ ________ ____ _____.
__________ _________ ______ _________ _________ ________ __________.
______ ______ ____ _____ ________ _________ ________ ____ ___ ___.
______ ___ ________ _________ _________ ______ ___ __________ ______ ______.
_______ ______ _________ ______ _________.
______ _______ ____ _____ ____ _____ ______ _________ ________.
___ ______ _____.
Skip in 10
In nano technology, fabrication approaches are broadly classified into top-down and bottom-up methods. The top-down approach involves breaking down bulk materials into nanoscale structures, whereas the bottom-up approach builds nanostructures atom by atom or molecule by molecule. The top-down approach is similar to traditional manufacturing techniques, while the bottom-up approach mimics natural molecular assembly processes. The top-down approach starts with larger bulk material and reduces its size to nanoscale using mechanical, chemical or lithographic techniques. This method is widely used in semiconductor industry and microelectronics fabrication. However, it may produce surface defects
______ _________ _____ ____ ____ ___._______ ___ _____ __________ _____ _______ __________ _________.
__________ __________ _____ __________ _______ _________ _______ ___ _________ _____ ________.
____ ______ _____ _______ _______.
_____ ____ ____ __________ _______ ___ ____ _____ _____ _____.
____ ____ ____ _____ _______ __________ ________ ______ ______ ____.
___ ________ _______ ______ _______ ________ ________ _____ ________ _________ ______ _______.
____ _____ __________ ___ __________ _________ _________ ______.
______ _____ _____ _____ _____ ___ ________ _____ _____ _____ _______.
____ _______ _______ ________ ______ ________.
________ ________ ___ __________ _____ ______ ________ _____ _________ ___ _______.
_________ _____ _________ _________ _____ ______ _____ _______.
_______ ____ _____ __________ ________ _____ ______ __________ ________ _________.
_______ __________ ____ _________ __________ _____ _________ _________ ________ ________ ____ _____.
__________ _________ ______ _________ _________ ________ __________.
______ ______ ____ _____ ________ _________ ________ ____ ___ ___.
______ ___ ________ _________ _________ ______ ___ __________ ______ ______.
_______ ______ _________ ______ _________.
______ _______ ____ _____ ____ _____ ______ _________ ________.
___ ______ _____.
IGNOU ACADEMY
Your IGNOU journey, made easier.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
Continue Reading — It's Free
Sign in with Google to unlock more of this answer.
✓ Free access
✓ Unlock up to 60% of the answer
✓ No payment required
✓ Unlock up to 60% of the answer
✓ No payment required
Quick Google sign-in. No separate registration form.