Molecular dynamics simulation for heat transport in thin diamond nanowires

Details Molecular dynamics simulation for heat transport in thin diamond nanowires Molecular dynamics simulation for heat transport in thin diamond nanowires

2011-08-30

arxiv.org/abs/1108.5812v1

Physical Review B 83, 235432 (2011)

Physics

Condensed Matter

Materials Science

accepted by PRB

Scientific paper

10.1103/PhysRevB.83.235432

The phonon thermal conductivity in diamond nanowires (DNW) is studied by molecular dynamics simulation. It is found that the thermal conductivity in narrower DNW is lower and does not show obvious temperature dependence; a very small value (about 2.0 W/m/K) of thermal conductivity is observed in ultra-narrow DNW, which may be of potential applications in thermoelectric devices. These two phenomena are probably due to the dominant surface effect and phonon confinement effect in narrow DNW. Our simulation reveals a high anisotropy in the heat transport of DNW. Specifically, the thermal conductivity in DNW along [110] growth direction is about five times larger than that of [100] and [111] growth directions. The anisotropy is believed to root in the anisotropic group velocity for acoustic phonon modes in DNW along three different growth directions.

Affiliated with

Also associated with

No associations

Rating

Molecular dynamics simulation for heat transport in thin diamond nanowires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Molecular dynamics simulation for heat transport in thin diamond nanowires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular dynamics simulation for heat transport in thin diamond nanowires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-728737