2016 Fiscal Year Final Research Report
Study of graphene interfacial effect for the development of nano heat spreader
| Project/Area Number |
15K17987
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
Wang Haidong 九州大学, 工学研究院, 助教 (30729405)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | suspended graphene / thermal conductivity / substrate effect / heat spreader / width dependence |
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| Outline of Final Research Achievements |
Graphene have ultrahigh thermal conductivity, making it a promising material for spreading waste heat from the hotspot to the heat sink. However, the interfacial effect has significant influence on the thermal conductivity of graphene, it may greatly reduce the performance of the graphene heat spreader. It is necessary to investigate the interfacial effect between graphene and substrate quantitatively. In this project, we used T-type and H-type sensors to measure the thermal conductivity of suspended graphene. Comparing with the supported graphene on substrate (600 W/mK), the suspended graphene has much higher thermal conductivity, over 2000 W/mK. It demonstrates that the interfacial phonon scattering has dominant effect on the thermal conductivity of graphene.
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| Free Research Field |
工学
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