Download GTU BE/B.Tech 2018 Winter 7th Sem New 2173905 Electrical And Optical Properties Of Nanomaterials Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018

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Subject Code: 2173905 Date: 03/12/2018
Subject Name: Electrical and Optical properties of Nanomaterials
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) What is the importance of electrical transport property in various sector? 03
(b) Ilustrate the conduction in materials with reference to the AC 04

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(c) Explain four probe and two probe method. 07

Q.2 (a) Define why Nano thin film possess a variation in electrical transport property. 03
(b) Write a short note on DC conduction of materials. 04
(c) Write applications of Nano thin film with a properties of its thickness 07
OR

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(c) Explain AC conductivity of nano materials. 07

Q.3 (a) Opto-electric properties of thin film in industry, illustrate. 03
(b) Issintered temperature affect the grain size? 04
(c) Explain what type of properties is changed before and after of the temperature apply. 07
OR

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Q.3 (a) Define Grain and grain boundary with reference.of size reduction. 03
(b) Microstructure effect on thin film, explain it. 04
(c) Explain grain size effect on transport property nano materials. 07

Q.4 (a) What exactly happed when light interact with materials. 03
(b) Explain roll of optical property of thin film in LED. 04

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(c) Explain how optical and electrical.property differentiate in nano material 07
OR
Q.4 (a) Give photo catalytic effect definition with example. 03
(b) Explain difference between oxide materials and non-oxide material’s Properties in term of photo-catalytic effect. 04
(c) Write short note-on'photo-catalytic property of nano materials. 07

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Q.5 (a) Give application of optical property of thin film in defense sector. 03
(b) Give the application of optical property of thin film in space technology. 04
(c) Find out what are the end points (limitation) of thick film. 07
OR
Q.5 (a) Give 4 to 5 name of thin film synthesis technique. 03

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(b) Explain particle size effect on optical property. 04
(c) Write a note on sensitivity of nano thin film. 07

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