Abstract
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.
Highlights
The promise of superconductivity continues to cultivate a sustained and intense interest from the scientific community because of the inverse relationship between finite sources of energy and the demands of a growing industrialized global community
Since its discovery in 1911, the extremely low transition temperatures often relegated the use of superconductivity to the laboratory because of the expense and difficulties associated with the use of liquid helium [2]
Superconductivity was demonstrated in a lead core fiber via a multidisciplinary approach akin to current research dedicated to the integration of semiconductor devices into optical fibers [10,11,12]
Summary
The promise of superconductivity continues to cultivate a sustained and intense interest from the scientific community because of the inverse relationship between finite sources of energy and the demands of a growing industrialized global community. A superconducting fiber with a high-temperature superconducting core material such as yttrium barium copper oxide is preferable for the majority of applications. The yttrium barium copper oxide core of these types of fibers exhibited zero resistance at temperatures of approximately 93 K.
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