M.Sc. DEGREE EXAMINATION, APRIL 2016
Second Semester
Nanoscience and Technology
CHARACTERIZATION OF NANOMATERIALS
(CBCS 2013 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
1. What is meant by hardness of a material?
2. What is abrasion?
3. Define dipole.
4. What are charge carriers?
5. What is SERS?
6. Define photoluminescence.
7. Write any two differences between hard and soft
magnets.
8. Define retentivity.
9. How to determine the grain size of a nanoparticle?
10. What is the optical diffraction limit?
Sub. Code
533202
RW-10853
2
Ws1
Part B 5 25)
Answer all questions.
11. Give a summary on plasticity of nanoceramics.
Or
Write a brief note on nanoindentation
12. Explain the principle of impedance spectroscopy in
briefly.
Or
Write a short note on dc electrical conductivity as a
function of temperatnre.
13. Write a summary on chromophores
Or
Give a brief note on surface plasmon resonance.
14. Explain the types of magnetism in briefly
Or
Write the principle of ESR spectroscopy.
15. Write a summary on quantum tunneling effect.
Or
Explain the working principle of SEM in briefly
RW-10853
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Part C 10 30)
Answer any three questions.
16. Explain in detail on superplasticity and plastic
deformation in nanomaterials.
17. Describe the Hall effect in detail.
18. Discuss the principle and working mechanism of Raman
spectroscopy.
19. Elaborate the principle and working mechanism of
magnetic force microscopy in detail.
20. Describe the operating modes and working principle of
AFM in detail.