Scientists at the Naval Research Laboratory have recently invented a method of making a high-temperature superconducting (HTS) striated tape, which is essentially a kind of wire that has zero resistance below a certain temperature. The patented technology is available via patent license agreement to companies that would make, use, or sell it commercially.
Certain materials exhibit superconductivity, meaning that below a characteristic critical temperature, their electrical resistance drops to zero. Wires made of high-temperature superconductors are those that can operate at a higher critical temperature than usual. They usually consist of flat metal tapes coated with thin layers of high-temperature superconducting material. However, the flat geometry causes significant losses in alternating current (AC) applications.
Navy researchers have developed an efficient and scalable method of creating high-temperature superconducting striated tape, which does not suffer from the same losses in AC applications. The tape is made by aligning and bonding two superimposed high-temperature superconducting tapes to form a single integrated tape structure. The process aligns the two tapes on either side of a thin, intervening insulator layer with microscopic precision, and electrically connects the two sets of tape filaments with each other.
- High-temperature superconducting striated tape combinations allow for low AC losses and can be applied to the development of inductors, transformers, and stators for motors and generators
- Precisely aligns separate tapes to form a single tape structure, making it compatible with a reel-to-reel production process
- Utilizes an alignment jig to assemble all the separate components together on a 2D planar or 3D curved surface with high precision
- Low melting temperature solder preforms bond the high-temperature superconducting tapes, which prevents damaging or delaminating of the layered structure
- Businesses can commercialize the technology by licensing U.S. Patent Application 20190189888 and 20190184480 from the Navy (International patent applications also filed)
- License fees paid to the Navy are negotiable
- Businesses that license the technology may have the opportunity to pursue collaborative research with the inventors
- Testing data may be available to companies evaluating the technology
- TechLink guides businesses through evaluation and licensing; services provided at no cost