Spheres, field-fabricated

Field-fabricated spheres are made in one of two methods. Smaller spheres can be made by the expanded cube, soccer ball method, while larger ones are made by the orange peel method. The orange peel method consists of petals and cap plates top and bottom. 

Procedure 6-3 Design of Square and Rectangular Platforms, 304 Procedure 6-4 Design of Pipe Supports, 309 Procedure 6-5 Shear Loads in Bolted Connections, 317 Procedure 6-6 Design of Bins and Elevated Tanks, 318 Procedure 6-7 Agitators/Mixers for Vessels and Tanks, 328 Procedure 6-8 Design of Pipe Coils for Heat Transfer, 335 Procedure 6-9 Field-Fabricated Spheres, 355 References, 364... 

Composite piezoelectric transducers made from poled Pb-Ti-Zr (PZT) ceramics and epoxy polymers form an interesting family of materials which highlight the advantages of composite structures in improving coupled properties in soilds for transduction applications A number of different connection patterns have been fabricated with the piezoelectric ceramic in the form of spheres, fibers, layered, or three-dimensional skeletons Adding a polymer phase lowers the density, the dielectric constant, and the mechanical stiffness of the composite, thereby altering electric field and concentrating mechanical stresses on the piezoelectric ceramic phase. 

Polyelectrolyte cylindrical brushes behave in similar ways as the polyelectrolyte stars in many aspects. Due to their anisotropic architecture, their morphologies can be tuned between worms, helices, and spheres. Polyelectrolyte core-shell cylindrical brushes have been used for the fabrication of inorganic NPs or NWs. In particular, superparamagnetic hybrid cylinders with magnetic NPs in the core of the brushes were prepared. They can be aligned on the substrate in magnetic field. This provides another way for the directed assembly of hybrid materials in a controlled manner. 

The synthesis approaches for fabrication of hollow spheres of different semiconductor materials through irradiation route in large scale and under mild conditions could be of interest for both applications and fundamental studies. Indeed, it has been found that the combination of ionizing radiation and microemulsion can afford more unique conditions to control the composition, morphology, and size of NPs. Compared with other routes of building hollow spheres, radiation chemical approach is a one-step facile and effective method and has potential to produce various inorganic/polymer nanocomposite hollow spheres with potential applications in the fields of materials science and biotechnology. 

The lobster-eye optical grazing incidence X-ray objective consists of numerous tiny square cells located on the sphere and is similar to the reflective eyes of macruran crustaceans such as lobsters. The field of view can be made as large as desired, and it is practical, to achieve good efficiency for photon energies up to 10 keV. Spatial resolution of a few seconds of arc over the full field is possible, in principle, if very small reflecting cells can be fabricated. 

Ordered macroporous particles of silica and titania were fabricated by colloidal templating. The colloidal templates were assembled through colloidal crystallisation of suspended PS latex sphere particles in aqueous droplets straddling an air-oil interface. The shape of the template was controlled by the presence of additive surfactant or by the action of an applied electric field. 30 refs. 

---