B.TECH - Semester 7 nanoelectronics Question Paper 2013 (dec)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- What is mesoscopic system?
- Draw the energy levels and wave functions of triangular quantum well.
- What is sputtering?
- Differentiate between electron and optical microscope.
- Compare STM and AFM
- What is meant by modulation doped quantum well?
- What is the significance of Landauer Formula?
- What is resonant tunnelling?
- What are hot electrons?
- Compare stimulated and spontaneous emission. $$ \text { ( } 10 \times 2=20 \text { Marks) } $$ Answer any one questions from each Module. Each question carries 20 marks.
- (a) Obtain the expression for wave function, Energy and DOS of a particle in a two-dimensional box.
- (b) What is quantum dot? Explain energy and density of state of a quantum dot.
- (c) Explain parabolic Quantum well. OR
- (a) Derive the equation for Energy and wave function of particle in infinite square well, derive the expression for its DOS.
- (b) Explain Quantum wells, wires and dots and compare each.
- (c) Explain Density of State in OD,1D and 2D nano structures.
- (a) Explain the process of Physical Vapour Deposition in the fabrication of nanolayers.
- (b) Explain laser ablation, with neat diagram. Write the advantages and disadvantages.
- (a) Explain SEM with suitable diagrams. Compare it with TEM. 10
- (b) Explain PL and UV Instruments.
- (a) Explain the structure, energy band diagrams and Quantum behaviour of MOSFET.
- (b) Explain the Kronig-penney model of super lattice. 10
- (b) Explain the Kronig-penney model of super lattice. 10
- (a) Discuss different types of Multiple Quantum Well.
- (b) Explain the electron Scattering mechanism of parallel transport in 10 semiconductor nanostructures.
- (c) Write short notes on Shubnikov-de Haas effect.
- (a) Explain Resonant Tunnel Effect and the operation of Resonant Tunnel 10 Diodes.
- (b) Write notes on:
- (i) CNT Transistor (ii) Quantum dot laser
- (a) Explain the structure of Single electron transistor with neat diagrams. 10
- (b) Explain the working of quantum well sub band photo detector with energy 10 band diagram.