{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# HW3 F10 - Department of Materials Science and Engineering...

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

Department of Materials Science and Engineering University of Maryland College Park, MD ENMA 300: Problem Set #3 1. Lattices (2D and 3D) Identify the lattices and the unit cell in the following images: (a) [Source: M. C. Escher] (b) [Source: M.C. Escher] (c) The “Schwarz P surface” defines two 3D networks of channels (the ‘inside’ and the ‘outside’), that are actually identical in shape. On the right is a magnified portion of the surface. [Source: Min Lai et al., Chem. Comm. 2007] Page 1 of 3

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

View Full Document
(d) 2. Packing Densities - Ceramics Compute the Atomic Packing Factor for a rock salt crystal with r cation /r anion = 0.414, 0.54 and 1. Comment on the results, comparing them to the APF of metals. 3. Crystallographic Points and Planes a. Provide the coordinates of the atoms in the unit cell of the FCC structure. b. Mark 3 non-parallel planes of the {1 0 0} family in a 4x4x4 section of the simple cubic lattice. For example, in the drawing below the lattice points on a (0 0 1) plane were marked in blue. They include: 0,0,3 1,0,3 2,0,3 3,0,3 0,1,3 1,1,3 2,1,3 3,1,3 etc… It is
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern