M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Electronics
NANO ELECTRONICS
(CBCS 2015 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is meant by potential well?
2. List quantum mechanics operators.
3. Distinguish between direct band gap and indirect band
gap semiconductors?
4. What is Organic semiconductor?
5. Write a note on laser ablation.
6. What is meant by Nano lithography?
7. What is quantum dot?
8. Write a note on quantum well?
9. What is meant by tunnelling effect?
10. List nano electromechanical system devices.
Sub. Code
5MEL3C2
AFF-5070
2
Ws8
Part B x 5 25)
Answer all questions.
11. Write note on Hermitian operators.
Or
Explain photon interacting with electrons in solids.
12. Explain electron in crystalline structure.
Or
Describe band structure of semiconductor alloys.
13. Explain molecular beam epitaxy.
Or
Discuss about NEMS.
14. Describe time and length scales of the electrons in
solids.
Or
Explain electrons in Quantum wires.
15. Write about single electron transistor.
Or
Explain the working of Lasers.
AFF-5070
3
Ws8
Part C x 10 30)
Answer any three questions.
16. Explain time independent schrodinger equation.
17. Discuss about carbon nano materials.
18. Explain the methods of nanotube growth in detail.
19. Describe the statistics of electron in solids and
nano structures in detail.
20. Explain about potential effect transistor.
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