Multi-layered microwire with a bi-metal tip for thermoelectric applications

A multi-layered microwire for thermoelectric applications was fabricated. This was made by depositing a thin Al layer on a 100 μm diameter Fe core, and a bi-metal tip was created at one end of the wire. A thermoelectromotive force was successfully generated by applying different temperatures to each end of the wire. The sign of the thermoelectromotive force changed depending on to which end the higher temperature was applied. The Seebeck coefficient of the fabricated, multi-layered microwire was measured to be 1.96 μV K−1.