Thermal rectification in Y-junction carbon nanotube bundle

Thermal rectification in Y-junction carbon nanotube is demonstrated in Y-junction CNT. The observed thermal rectification of ∼8.3% ± 0.5% with △T = 4K and ∼12.0% ± 0.4% with △T = 17.5K in the Y-junction CNT bundle is the highest among the carbon materials, which is attributed to asymmetric phonon transmission in different (forward and backward) directions as suggested by our molecular dynamics (MD) simulation.94