q2decryp - MTE 208 California State Polytechnic University,...

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1. Each of following figures is a unit cell with a right-handed coordinate system: All intercepts are simple fractions of a lattice parameter. Write the indices for each point, direction or plane in the corresponding answer box. Label the origin with O if it is not indicated. Use correct notation . California State Polytechnic University, Pomona College of Engineering MTE 208 Fall 2008 Quiz 2 October 16, 2008 Name: ________________________________________ x y z y b. [ ] 2 2 1 c. ( ) 2 3 1 d. ( ) 0 1 1 a. O 2 1 1 2 1 You may, optionally, use commas for points, but not for directions or planes. a. O 2 1 1 1 b. [ ] 2 1 2 c. ( ) 2 3 4 d. ( ) ( ) 0 2 2 or 0 1 1 a. O 1 2 1 2 1 b. [ ] 2 1 2 c. ( ) 4 3 2 d. ( ) 0 1 2
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2. Draw the following in the unit cells provided. (First decide: is it a point, direction or plane?) (2 0 1) b. / 5 / 5 / 5 a. [ 1 2 3] Divide by 3, shift origin (this arrow is difficult to draw on the computer: from tail move -1/3a, +2/3b, -c 1/2 1/2 1 c. Move origin to corner indicated by either small arrow. invert: ½ infinity -1 are the axial intercepts. 1/2 1 1/2 b. [ 2 3 1] Move origin to corner indicated by small arrow. Divide by 3: -2/3 1 -1/3 That’s the coordinate for the head of the direction vector. (1 0 2)
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This note was uploaded on 12/10/2008 for the course MTE 208 taught by Professor Snyder during the Fall '08 term at Cal Poly Pomona.

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q2decryp - MTE 208 California State Polytechnic University,...

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