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Note11

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CRYSTALS

Slides:

1. CsCl quarz crystal ball crystal with faces faces
2. C60 balls molecular crystal
3. Amorphous SiO2 glass
4. liquids
5. liquid crystals
6. quasicrystals (penrose tiling)
7. polymers
8. crystals: CsCl 2d pattern of complicated structure 3D pattern of complex structure
9. 2d lattice with PLV a1 a2 (each point as na1+ma2
10. same lattice different PLV
11. QUiz is this a PLV set?
12. QUIZ yes, shown (vector span all points)
13. QUIZ are these PLV? (not, because they miss the central point)
14. They are PLV of THIS lattice (without central point) 16.24
15. QUIZ is this a lattice honeycomb (wrong calling it hexagonal lattice) R P Q points
16. QUIZ sum of LV along two edges give also point at the center of the hexagon, Environ of R not same P, P is equiv to Q
17. Periodic armadillos lattice and repeating object
18. Same with honeycomb lattice point midpoint between P and R
19. Same with cell

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