GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020
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Subject Code: 3153907 Date: 29/01/2021Subject Name: Fabrication Of Nano- Devices
Time: 10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What do you mean by tunneling ? 03
(b) Differentiate : Quantum wells and Wires. 04
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(c) Describe various applications associated with Biosensors. 07Q.2 (a) Define: Schottky devices 03
(b) Describe : Single walled carbon nanotubes 04
(c) Write a short note application associated with semiconducting nano devices. 07
Q.3 (a) Define : Nano manipulation 03
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(b) Write down criteria for the choice of materials for gas Sensor. 04(c) Write a short note on Magnetic Nanoparticles. 07
Q.4 (a) State advance applications associated with Graphene. 03
(b) Explain : Sensitivity of gas sensor: 04
(c) Write short note photonic band gap systems and its applications. 07
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Q.5 (a) What do you mean by Nano robotics. 03
(b) Differentiate : Nanotubes, and Nano fibers. 04
(c) Write a short note on experimental aspects associated with gas sensing. 07
Q.6 (a) Define: Biosensor? 03
(b) Write short note on Metal/oxide nanoparticles and its applications. 04
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(c) Write shot note on lithographic technique. 07Q.7 (a) Define: Single Electron Transistors 03
(b) Explain use of mask in lithography technique. 04
(c) Write a short note on protein based biosensor. 07
Q.8 (a) What do you mean by resonant tunneling ? 03
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(b) Describe : principles of DNA based biosensors 04(c) Write a short note on Carbon Nanotube based logic gates. 07
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