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Close packing face-centered cubic

Any study of colloidal crystals requires the preparation of monodisperse colloidal particles that are uniform in size, shape, composition, and surface properties. Monodisperse spherical colloids of various sizes, composition, and surface properties have been prepared via numerous synthetic strategies [67]. However, the direct preparation of crystal phases from spherical particles usually leads to a rather limited set of close-packed structures (hexagonal close packed, face-centered cubic, or body-centered cubic structures). Relatively few studies exist on the preparation of monodisperse nonspherical colloids. In general, direct synthetic methods are restricted to particles with simple shapes such as rods, spheroids, or plates [68]. An alternative route for the preparation of uniform particles with a more complex structure might consist of the formation of discrete uniform aggregates of self-organized spherical particles. The use of colloidal clusters with a given number of particles, with controlled shape and dimension, could lead to colloidal crystals with unusual symmetries [69]. [Pg.215]

Figure 2.11. Schematic of sphere packing for cubic close-packed (face-centered cubic, fee). Shown is solid carbon dioxide (dry ice), that consists of individual CO2 molecules that pack in an fee lattice. The black carbon atoms shown in (a) illustrate a traditional representation of the lattice, consisting of a cube with atoms on each of the faces. The packing layers are shown from two different views (a) parallel to the ABC... layers (i. e., (111) planes) and (b) perpendicular to these layers. Figure 2.11. Schematic of sphere packing for cubic close-packed (face-centered cubic, fee). Shown is solid carbon dioxide (dry ice), that consists of individual CO2 molecules that pack in an fee lattice. The black carbon atoms shown in (a) illustrate a traditional representation of the lattice, consisting of a cube with atoms on each of the faces. The packing layers are shown from two different views (a) parallel to the ABC... layers (i. e., (111) planes) and (b) perpendicular to these layers.
A Hexagonal close-packed Face-centered cubic Body-centered cubic 13 14 15 16 17 3A 4A 5A 6A 7A ... [Pg.485]

Silica colloidal crystals comprise a close-packed face-centered cubic (fee) lattice of silica spheres of a sub-micrometer diameter (Fig. 8.1) with ordered arrays of nanoscale interconnected voids that constitute three-dimensional nanopores [15],... [Pg.265]

Simple hexagonal Hexagonal close packed Face-centered cubic... [Pg.1370]

Metallic solids consist entirely of metal atoms. Metallic solids usually have hexagonal close-packed, cubic close-packed (face-centered cubic), or body-centered cubic structures. Thus, each atom typically has 8 or 12 adjacent atoms. [Pg.440]

It can be seen that most of the elements are metals in their elemental states (class I). The structures are largely close-packed (face-centered cubic or hexagonal close-packed) or body-centered cubic. In class II there are metals in which some kind of valence effect disturbs chemical trends and structural coordination none of these metallic structures (including white Sn) can be analyzed simply, although their proximity to the valence structures (class III) explains the presence of partially covalent effects. [Pg.12]


See other pages where Close packing face-centered cubic is mentioned: [Pg.109]    [Pg.324]    [Pg.774]    [Pg.270]    [Pg.945]    [Pg.6057]    [Pg.384]    [Pg.440]    [Pg.944]    [Pg.6056]    [Pg.230]    [Pg.109]    [Pg.295]    [Pg.748]    [Pg.462]    [Pg.834]    [Pg.146]   
See also in sourсe #XX -- [ Pg.336 ]




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Close packing

Closed packing

Cubic close pack

Cubic close packing

Cubic close-packed

Face centered

Face centered cubic packing

Face cubic

Face-Centered Cubic Versus Hexagonal Close-Packed Structures

Face-centered cubic

Face-centered cubic close-packed

Face-centered cubic structure close packed planes

Packing cubic

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