15EC551
Visvesvaraya Technological University, Belagavi
MODEL QUESTION PAPER
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/and 2nd question.
Module 1
1 a Give an overview of development milestones in microfabrication in electronic
industries.
8M
b State Mores law. Apply the same to explain the continued miniaturization seen in the
field of electronics.
8M
OR
2 a Classify conductors, insulators and semiconductors based on its electronic properties. 8M
b Distinguish the top down and bottom up approach for fabrication of Nanostructures. 8M
Module 2
3 a Discuss the working principle of scanning electron microscopy. 8M
b Evaluate the Quantum Confinement in Semiconductor Nanostructures. 8M
OR
4 a Define Braggs Law. Summarize the working principle of X-ray Diffractometer with a
neat sketch.
10M
b Write a brief note on electronic density of states. 6M
Module 3
5 a Explain the major steps involved in photolithography technique. 8M
b Give an account on quantum hall effect and resonant tunneling. 8M
OR
6 a Explain the characterization methods and tools used in the analysis of optical and
electrical characterization of any semiconductor nanostructures.
10M
b Explain the phenomenon in quantum confined stark effect. 6M
Module 4
7 a Classify and describe different types of carbon nanostructures. 10M
b Explain the wrapping arrangements in carbon nanotubes and its effects on electronic
properties.
6M
OR
8 a Demonstrate the application of SWCNT in field effect transistors as sensors. 8M
b Differentiate between the electrical behavior of SWCNT and MWCNT 8M
Module 5
9 a Discuss the basic working principle of sensors. How do nanosize effect the efficiency
of a sensor.
8M
b Quantum size effect can be applied to develop Nano sensors, Justify 8M
OR
10 a Write a note on injection laser and its working principles. 8M
b Describe nano sensors based on physical properties. 8M