Journal
PHYSICAL REVIEW B
Volume 79, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.115432
Keywords
carbon nanotubes; molecular dynamics method; phonons; rectification; thermal conductivity
Funding
- NASA Ames
- NASA [NAS2-03144]
- DOE [DE-FG02-00ER45817, DE-FG02-07ER46375]
- U.S.- ARO [W911NF-05-1-0372]
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Using molecular-dynamics simulations we demonstrate the existence of heat-pulse rectification in carbon nanotube Y junctions. The heat pulse is found to propagate unimpeded from stem to branches, while in the reverse direction there is a substantial reflection back into the branches with significantly reduced transmission. Based on this we discuss the implications for phonon rectification applications for these junctions.
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