Download AKTU B-Tech 4th Sem 2016-17 Nano Sciences Question Paper

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B.TECH.

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THEORY EXAMINATION (SEM–IV) 2016-17

NANO SCIENCES

Time: 3 Hours Max. Marks : 100

Note: Be precise in your answer.

SECTION – A [2x10=20]

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1 Explain all parts in short.

1. Nano diamond
2. Quantum dots
3. Fullerenes
4. Luminescence

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5. Face cantered cubic nanoparticles
6. Lattice Vibrations
7. Excitons
8. Magic Numbers
9. Fermi Surfaces

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10. Trap levels

SECTION-B [10x5=50]

Attempt any FIVE questions from this section.

1. What are the carbon nanotubes and discuss its various properties.
2. Give a detailed account of Quantum dot laser super conductivity.

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3. Write the interactions of electron with the materials and discuss the necessity of gold coating prior to SEM analysis for insulating samples.
4. Give a detailed account of Atomic force microscopy and its application in nanoscience.
5. Write the various growth techniques of nanomaterials and give a detailed account of thermal evaporation technique.
6. What is Graphene? Discuss its applications in nanotechnology.
7. What are localized particles, Give a detailed account of donors, accepters and deep traps.

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8. Write the working principal of Raman Spectroscopy and its various applications in nanoscience.

SECTION-C [15x2=30]

Attempt any TWO questions from this section.

1. Deduce the time dependent Schrodinger Wave Equation.
2. Discuss in detail about inert gas and super fluid clusters.

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3. Define microscope and give a detailed account of transmission electron microscopy.

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