Magnetically Activated Flexible Thermoelectric Switches Based on Interconnected Nanowire Networks
(2022) Advanced Materials Technologies — Vol. 7, n° 5, p. 2101043 (2022)
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- Authors
Marchal, Nicolas 
Piraux, Luc
- Abstract
- The use of the spin degree of freedom in thermoelectric conversion offers new functionalities for electronic devices powered by waste heat and a promising solution for sustainable technologies. Here, thermocouples formed from two dissimilar arrays of interconnected magnetic nanowires embedded in a polymer film are used to realize flexible thermoelectric switches providing optimal magnetic-field-induced control of the sign and magnitude of the thermopower. By finetuning the composition of the homogeneous and multilayered nanowires forming the thermocouple legs, an ideal on/off ratio in the switching of the thermoelectric output voltage, or a simple sign reversal can be achieved in the presence of a magnetic field. This work paves the way for flexible spin-caloritronics devices exploiting residual thermal energy for the development of thermally activated sensors and logic devices.
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Citations
da Câmara Santa Clara Gomes, T., Marchal, N., Abreu Araujo, F., & Piraux, L. (2022). Magnetically Activated Flexible Thermoelectric Switches Based on Interconnected Nanowire Networks. Advanced Materials Technologies, 7(5), 2101043. https://doi.org/10.1002/admt.202101043 (Original work published 2022)