Hollow sphere

Glass spheres (hollow) Amino Methacryloxy PQ Corp. 

Various nanoscale architecture can be designed, including solid spheres, hollow spheres, tubes, porous particles, solid particles, and branched structures (Table 2).To achieve such nanostructures, different fabrication methods are used depending on the types of material. The methods used for nanoscale assembly include molecular self-assembly, bioaggregation, nanomanipulation, photochemical patterning, molecular imprinting, layer-by-layer electrsostatic deposition, and vapor deposition. 

Typical fillers barium sulfate, calcium carbonate, carbon black, calcium sulfate whiskers, diatomaceous earth, glass fiber, glass spheres, hollow silicates, kaolin, mica, talc, wollastonite, silica, magnesium hydroxide, hydrotalcite, red mud, ground tire rubber, ferromagnetic powder, nickel fibers, wood flour, zirconium silicate, starch, soot, marble, aluminum, lignin, sand... 

SBA-15, MCM-48, HMS and MCM-41. Xia etal. also used CVD with acetonitrile as precursor to prepare graphitic mesoporous carbon materials with diverse morphologies, such as sphere, hollow sphere, rod and nano-tubeP Su et al. used a similar CVD method and benzene as... 

The morphology of ordered mesostructured carbons is another important factor with respect to their practical applications. Various macroscopic morphologies are required, for example, films (in sensor, separation and optical applications), uniformly sized spheres (in chromatography) or transparent monoliths. Using suitable synthesis strategies, it is possible to control the external shape of the templated mesoporous carbon materials to generate powders, films and membranes, spheres, hollow spheres, rods, fibres, nanowires, nanotubes and monoliths. 

Glass (fibers, spheres, hollow spheres, and flakes),... 

The methods used to prepare NC gels are simple and versatile, i.e., injection of reaction solutions into closed vessels followed by polymerization at ambient temperature. Hence, NC gels can be readily formed in various shapes and sizes, such as films, sheets, rods, spheres, hollow tubes, etc. (Fig. 4a) [21,29]. NC gels can also be prepared by photoinitiated free-radical polymerization using very low concentrations (e.g., 0.1 wt% relative to the monomer) of a hydrophobic photoinitiator in aqueous systems (Fig. 4b) [48], Furthermore, the other type of NC gel, i.e., tetra-PEG-based NC gels, with good biocompatibility can be prepared by incorporating clay nanoparticles into the tetra-PEG network [30],... 

Spheres. Hollow spherical fillers have become extremely useful for the plastics industry and others. A wide range of hollow spherical fillers are currently available, including inorganic hollow spheres made from glass, carbon, fly ash, alumina, and zirconia and organic hollow spheres made from epoxy, polystyrene, UF, and phenol-formaldehyde. Although phenol-formaldehyde hollow spheres are not the largest volume product, they serve in some important appUcations and show potential for future use. 

Nanoparticulate materials are defined as small particles with a characteristic scale of less than 100 nm. Particles with many shapes, including sphere, hollow-shell, rods, belt, needle, wire, tube, disk, and plate, can be regarded nanoparticulate materials as long as one of the dimensions, for example, the thickness of the plates, is less than 100 nm. Nanoparticles exhibit new or enhanced size-dependent properties compared with the bulk counterparts or larger particles of the same material. The unique properties are influenced by the size and shape of the nanoparticles. As such, the control of size... 

Porous - sphere) (Solid - sphere) (Hollow - sphere)... 

---