The basic problem associated with the production of fibres directly from low viscosity melts is summarised, and a simplified attempt at qualtifying the effects of the various physical parameters associated with stable liquid jet formation is presented. Experi- designed to observe the form of liquid jets issuing from a capillary tube over a range of velocities are described. The results of these experiments are correlated with the theoretical treatment. Finally, a brief description is given of recent attempts in which, by various means, an extruded jet of liquid metal has been succesfully stablished to produce a fibre or wire on solidification.
In this study, we demonstrated superconductivity in a fiber with an yttrium barium copper oxide core and fused silica cladding. The fibers were fabricated via a modified melt-draw technique and post-process annealing treatment in excess oxygen. The fibers maintained overall diameters ranging from 100–900 microns and core diameters of 50–700 microns. Superconductivity of this fiber design was validated via the traditional four-point probe test method in a bath of liquid nitrogen at temperatures on the order of 93 K. The high-temperature superconducting fiber provides a glimpse of its cross cutting potential in fields of electromagnetism, healthcare, optics, and energy and lends credence to the promise for superconductivity.
Catalysts which comprise silica are rendered less susceptible to physical damage during processing with aqueous liquids by pre-steaming them.