15EC551
Visvesvaraya Technological University, Belagavi
MODEL QUESTION PAPER II
5th Semester, B.E (CBCS) EC/TC
Course: 15EC551- NANOELECTRONICS
Time: 3 Hours Max. Marks: 80
Note: Answer Five full questions selecting any one full question from each Module.
Question on a topic of a Module may appear in either its 1st or 2nd question.
Module 1
1 a Demonstrate advantage and disadvantage of Top Down and Bottom up approach with an
example for each.
10M
b Define Moore's law and connect the law to the continued miniaturization in the electronics
today.
6M
OR
2 a Deduce the equation for London Dispersion forces. 8M
b What is meant by Vander waals and Ionic Banding? Write down the expression for
Lenard Jones Potential.
8M
Module 2
3 a Explain the Quantum Confinement in Semiconductor Nanostructures. 8M
b Illustrate the single Electron Transistor with a neat sketch. 8M
OR
4 a Define Braggs Law. Explain the working principle of X-ray Diffractometer with a neat sketch. 10M
b Elaborate the scanning probe microscopy principles with a neat sketch. 6M
Module 3
5 a Discuss the Photolithography technique with a neat sketch. 8M
b How to synthesis colloidal Quantum dots using e-beam lithography? Explain. 8M
OR
6 a Demonstrate the Electron transport without scattering in Semiconductor nano structures. 8M
b Deduce the equation for Quantum hall effect. 8M
Module 4
7 a Design experiment to synthesis Carbon nanotubes using Chemical Vapor deposition
technique and discuss.
10M
b Classify different types of Carbon nano tubes and evaluate their properties. 6M
OR
8 a Discuss the significance of multiwall carbon nano tubes in different applications. 8M
b How to synthesis Carbon clusters using chemical methods? Explain. 8M
Module 5
9 a Describe the working principle of Quantum cascade lasers with a neat sketch. 8M
b Explain the working principle of Injection lasers and its applications. 8M
OR
10 a Give an example of Nano sensors based on Quantum size effects. 8M
b Describe briefly Electrochemical sensors with an example. 8M