Mutiple Choice Questions Question 1 (8 points) (a) (2 points) Lithography belong

Question

Mutiple Choice Questions Question 1 (8 points) (a) (2 points) Lithography belongs to .Top down nanofabrication. Bottom-up nanofabrication b) (2 points) Vapor-liquid-solid (VLS) growh belongsto Top down nanofabrication Bottom-up nanofabrication. (e) (2 points) In the following figure, which one is substinutional impurity? (d) (2 points) What is typical feature of nanostructures and nanomaterials? Large fraction of surface atoms per unit volme, large surface energy Small fraction of surface atoms per uni vokume, large surface energy · Large fraction ofsurface atoms per unit volume, small surface energy . sma fraction of surface atoms per unt volme, small surtce energy Question 2 (15 points) Nucleation and Growh Kinetics e) (3 points) For nucleation, Tm is melting temperature of a material, T

Explanation / Answer

1. Photo lithography is one of the most common top down techniques.

2. The most common bottom up approach is VLS growth.

3. Substitutional impurity substitutes the atom from its place therefore C is the aubstituional impurity.

4. Nano particles have large fraction of surface atoms per unut volume which also results in high surface energy.

Please post the other question seperately

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