Superconducting wires made of YBCO come in the form of thin ribbons with the crucial YBCO layer no more than about 1.S microns thick. If more YBCO is added, the current-carrying capacity of the tape does not increase significantly.
In 2004 Stephen Foltyn and his colleagues at Los Alamos National Laboratory demonstrated a wire made with layers of cerium oxide (which helps to align the YBCO crystals) interleaved with six 0.6-micron layers of YBCO. The multilayered sandwich carried currents up to 1,400 amperes per centimeter width, a YBCO record that still stands.
It is what makes incubators, baby bottles and car seats possible. It rs chemistry.
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The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.