Very large thermal rectification in bulk composites consisting partly of icosahedral quasicrystals
Abstract
The bulk thermal rectifiers usable at a high temperature above 300 K were developed by making full use of the unusual electron thermal conductivity of icosahedral quasicrystals. The unusual electron thermal conductivity was caused by a synergy effect of quasiperiodicity and by a narrow pseudogap at the Fermi level. The rectification ratio, defined by TRR = |{{{\boldsymbol{J}} }large}|/|{{{\boldsymbol{J}} }small}|, reached vary large values exceeding 2.0. This significant thermal rectification would lead to new practical applications for the heat management.
- Publication:
-
Science and Technology of Advanced Materials
- Pub Date:
- December 2014
- DOI:
- 10.1088/1468-6996/15/6/064801
- Bibcode:
- 2014STAdM..15f4801T