Ultrafast cooling by covalently bonded graphene-carbon nanotube hybrid immersed in water
Ultrafast cooling by covalently bonded graphene-carbon nanotube hybrid immersed in water
复制标题
通过浸入水中的共价键合石墨烯-碳纳米管杂化物进行超快冷却
DOI：
10.1088/0957-4484/27/46/465705
复制
发表时间：
2016-11-18
期刊：
影响因子：
3.5
通讯作者：
Koumoutsakos, Petros
中科院分区：
文献类型：
--
作者：
Chen, Jie;Walther, Jens H.;Koumoutsakos, Petros
晶体管功率密度的增加和尺寸的减小给现代微处理器的设计带来了严峻的热挑战。此外，三维芯片堆叠架构等新技术需要新颖的冷却解决方案来进行热管理。在这里，我们通过瞬态散热模拟证明，浸入水中的共价键合石墨烯-碳纳米管（G-CNT）混合物是对此类高温和高热通量表面进行超快速冷却的有前途的解决方案。 G-CNT 混合体提供了一个独特的平台，通过平行排列集成单个 CNT 的卓越轴向传热能力。将 G-CNT 浸入水中可通过固液相互作用提供额外的散热路径，从而在高达 10 000 W cm−2 的恒定功率输入下实现热表面的可持续冷却。
The increasing power density and the decreasing dimensions of transistors present severe thermal challenges to the design of modern microprocessors. Furthermore, new technologies such as three-dimensional chip-stack architectures require novel cooling solutions for their thermal management. Here, we demonstrate, through transient heat-dissipation simulations, that a covalently bonded graphene-carbon nanotube (G-CNT) hybrid immersed in water is a promising solution for the ultrafast cooling of such high-temperature and high heat-flux surfaces. The G-CNT hybrid offers a unique platform to integrate the superior axial heat transfer capability of individual CNTs via their parallel arrangement. The immersion of the G-CNT in water enables an additional heat dissipation path via the solid–liquid interaction, allowing for the sustainable cooling of the hot surface under a constant power input of up to 10 000 W cm−2.