主动冷却
微电子
材料科学
移动设备
电子设备和系统的热管理
蒸发
消散
图层(电子)
皮肤温度
计算机科学
水冷
机械工程
光电子学
生物医学工程
纳米技术
工程类
物理
操作系统
热力学
作者
Xinsheng Zhang,Ming Zhou,Zhi Huang,Xiaoding Xu,Xian‐Zheng Zhang,Xuejiao Hu
标识
DOI:10.1115/mnhmt2009-18370
摘要
Increasing functionality demands more heat dissipation from the skin of handheld microelectronics devices. The maximum amount of heat that can be dissipated passively, prescribed by the natural convection and blackbody radiation theories, is becoming the bottleneck. In this paper, we propose a novel technique that may overcome this passive cooling limit. It is made possible by using a biomimetic skin capable of perspiration on demand. The key component of the biomimetic skin is a thin layer of temperature sensitive hydro gel (TSHG). The TSHG layer can sweat the skin with moisture when the skin temperature is higher than the TSHG’s lower critical solution temperature (LCST), and thus boost the heat dissipation rate through evaporation. The TSHG layer can be refilled by absorbing the moisture in air when the device batteries are being recharged. A generic practice of this novel cooling technique with preliminary analysis and experimental results is presented. With this novel passive cooling technology, a handheld device can be powered 2–4.8 times higher, and may be powerful enough to run a desktop operation system like a personal computer.
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