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Posted Date: 03 Jun 2019      Posted By:: Tushar Pathak    Member Level: Bronze  Points: 3 (₹ 2)

2019 Dayananda Sagar University B.E. Electronics & Communication Engineering NE, 4th semester, ECE,2019 Question paper

Course: B.E. Electronics & Communication Engineering   University/board: Dayananda Sagar University

Question of neno electronics internal assement third of fourth semester. Containing question mainly on carbon nanotubes and organic polymers.

1.Explain the nature of the carbon bond. 06
2.Discuss on new carbon structures and Carbon clusters. 08
3.What is fullerene? Explain the structure of fullerene. 06
4.Discuss the structure of C60 and its crystal. How the electrical property of C60 changes by doping with alkali metal. Explain 10
5.How to create a compound nanostructure from the fullerene? Explain with diagram. 08
6.What is super conductivity? Explain the superconductivity behaviour of C60 and its compound. 08
7.Define carbon nanotubes. Explain the structure of carbon nanotube. 08
8.Discuss briefly the processes of fabrication of carbon nanotubes and mention the different types of nanotubes obtained from each process.10
9.Explain the three different structures of carbon nanotubes
10.List the properties of carbon nanotubes. Briefly explain them 10
11.Highlight the applications of carbon nanotubes in brief.10
12.Discuss any two applications of carbon nanotubes in electronics in detail
13.Discuss briefly about on carbon clusters and new carbon structures.
14.Explain in detail about the polymerization with proper structural formula and also, how the size of polymers is measured 10
15.Give three examples of nanostructure fabricated from co polymers and their applications in industry. 12
16.What is conductive polymer? Illustrate one example with figure. 10
17.Write a short notes on (i) Organic Molecules (ii) Conductive Polymers 10
18.Explain in detail about the polymerization with proper structural formula and also, how the size of polymers is measured  10
19.List the two types of Nanocrystals and explain them with their chemical structures. 10
20.What are Block co-polymers? Discuss them in detail with examples. 10
21.Discuss in detail about the sizes of building blocks and Nanostructures  10
22.Discuss about Micelles and Vesicles. 10
23.Write a note on the Multilayer Films. 10
24.With neat diagrams explain the fabrication process of NEMS. 10
25.What are MEMS? Explain the principle of MEMS based accelerometer with diagram. 10

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