Lect18_notes

is this a crystal structure

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Unformatted text preview: , where strong bonding exists between the atoms, while the individual sheets are held together by weak bonding.! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Is this a Crystal Structure? Or Lattice? What s the difference?! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 16 ! 10 Two Dimensional Crystals! Graphite - The atoms are bonded together in sheets, where strong bonding exists between the atoms, while the individual sheets are held together by weak bonding.! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Crystal Structure Lattice! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 16 ! 11 Lattice! The formal definition of the lattice is then: A lattice is a set of points in space such that arranged such that the surroundings of one point are identical with those of all the others.! ! The type of symmetry described by this type of a lattice is known as translational symmetry.! ! ! ! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 16 ! 12 Lattice! •  A lattice is associated with translational symmetry! •  A...
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This note was uploaded on 01/16/2014 for the course CBEMS 164 taught by Professor Porter,j during the Fall '08 term at UC Irvine.

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