Loading...
Please wait, while we are loading the content...
Similar Documents
Interfacial thermal conductance limit and thermal rectification across vertical carbon nanotube/graphene nanoribbon-silicon interfaces
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vallabhaneni, Ajit Kumar Hu, Jiuning Chen, Yong P. Roy, Ajit Ruan, Xiulin |
| Copyright Year | 2013 |
| Abstract | Various models were previously used to predict interfacial thermal conductance of vertical carbon nanotube (CNT)-silicon interfaces, but the predicted values were several orders of magnitude off the experimental data. In this work, we show that the CNT filling fraction (the ratio of contact area to the surface area of the substrate) is the key to remedy this discrepancy. Using molecular dynamics, we have identified an upper limit of thermal interface conductance for C-Si interface which is around 1.25 GW/m2K, corresponding to a 100% filling fraction of carbon nanotube or graphene nanoribbon on substrate. By extrapolating to low filling fraction (∼1%) that was measured in experiments, our predicted interfacial thermal conductance agrees with experimental data for vertical CNT arrays grown on silicon substrate (∼3 MW/m2 K). Meanwhile, thermal rectification of more than 20% has been found at these C-Si interfaces. We observed that this is strongly dependent on the interfacial temperature drop than the fillin... |
| Starting Page | 064311 |
| Ending Page | 064311 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.4790367 |
| Alternate Webpage(s) | http://www.physics.purdue.edu/quantum/files/JAPIAU_113_6_064311_1.pdf |
| Alternate Webpage(s) | http://www.dtic.mil/dtic/tr/fulltext/u2/a572111.pdf |
| Alternate Webpage(s) | https://engineering.purdue.edu/NANOENERGY/publications/Ajit_JAP_TIM_2013.pdf |
| Alternate Webpage(s) | http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=2345&context=nanopub |
| Alternate Webpage(s) | https://doi.org/10.1063/1.4790367 |
| Volume Number | 113 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
