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Covalently Bonded Graphene-Carbon Nanotube Hybrid for High-Performance Thermal Interfaces

机译：用于高性能热界面的共价键合石墨烯-碳纳米管杂化物

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The remarkable thermal properties of graphene and carbon nanotubes (CNTs) have been the subject of intensive investigations for the thermal management of integrated circuits. However, the small contact area of CNTs and the large anisotropic heat conduction of graphene have hindered their applications as effective thermal interface materials (TIMs). Here, a covalently bonded graphene-CNT (G-CNT) hybrid is presented that multiplies the axial heat transfer capability of individual CNTs through their parallel arrangement, while at the same time it provides a large contact area for efficient heat extraction. Through computer simulations, it is demonstrated that the G-CNT outperforms few-layer graphene by more than 2 orders of magnitude for the c-axis heat transfer, while its thermal resistance is 3 orders of magnitude lower than the state-of-the-art TIMs. We show that heat can be removed from the G-CNT by immersing it in a liquid. The heat transfer characteristics of G-CNT suggest that it has the potential to revolutionize the design of high-performance TIMs.
机译：石墨烯和碳纳米管（CNT）的卓越热性能已成为集成电路热管理的深入研究的主题。然而，碳纳米管的接触面积小和石墨烯的各向异性导热大，阻碍了它们作为有效的热界面材料（TIMs）的应用。在此，提出了一种共价键合的石墨烯-CNT（G-CNT）杂化物，该杂化物通过平行排列使单个CNT的轴向传热能力倍增，同时又为有效的排热提供了较大的接触面积。通过计算机模拟，表明G-CNT在c轴传热方面比多层石墨烯的性能高出2个数量级，而其热阻比现状低3个数量级。艺术TIM。我们表明，可以通过将G-CNT浸入液体中来去除热量。 G-CNT的传热特性表明，它有可能彻底改变高性能TIM的设计。

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