MSE262_PrelimI_2008_2009 - ENGRD 262/ MS&E 262 Spring...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Spring 2008 Prelim I March 27, 2008 Problem 1: a) Identify the following plane. (5 points) Consider two theoretical materials D and K, given the following properties: D: SC ρ = 3.14 g/cm 3 , M = 12.01 g/mol K: BCC ρ = 4.56 g/cm 3 , M = 10.81 g/mol b) Find the lattice parameter and atomic concentration. (10 points) c) For the given two theoretical materials compare the (100) and (110) planar concentrations of atoms and state which plane has a higher electrical conductivity for each material and why. (10 points) Z X Y
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Problem 2: a) What factors impact the signal transmission within a microchip and which of those factors do material scientists work on these days. (5 points) b) Calculate the drift mobility and the mean scattering time of conduction electrons in Al at room temperature, given that the resistivity of Al is 26.5 nΩ m . The density of aluminum is 2.7 g/cm 3 , its atomic mass is 26.982 g/mol and valence is three. (10 points) c) What is the drift velocity if the applied electric field is
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

MSE262_PrelimI_2008_2009 - ENGRD 262/ MS&E 262 Spring...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online