文章信息/Info

Title:

Research Progress in Bio-Inspired Interface Materials for Condensation Heat Transfer

作者:

邢丹丹; 吳菲菲; 王睿; 朱杰; 高雪峰

1. 中國科學院蘇州納米技術與納米仿生研究所2. 中國科學技術大學

Author(s):

XING Dandan; WU Feifei; WANG Rui; ZHU Jie; GAO Xuefeng

1. Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences2. University of Science and Technology of China

關鍵詞:

仿生; 超疏水表面; 親疏水復合表面; 超潤滑表面; 冷凝傳熱

Keywords:

bio-inspired;  superhydrophobic surface;  hydrophilic-hydrophobic hybrid surface;  super-slippery surface;  condensation heat transfer

DOI:

10.7502/j.issn.1674-3962.2018.12.07

文獻標志碼:

A

摘要:

隨著電子器件微型化、集成化、大功率化發(fā)展及其對小尺度空間高熱流密度散熱技術提出了迫切需求，如何設計開發(fā)高效冷凝傳熱界面材料引起國內(nèi)外廣泛關注。相比膜狀冷凝，滴狀冷凝是一種更為高效的能量輸運方式。然而，普通光滑疏水表面的離散冷凝液滴往往靠重力驅(qū)離，其自身熱阻仍相對較高，更新頻率也相對緩慢。因此，通過金屬材料表面的合理設計來減少冷凝液滴的驅(qū)離尺寸并同時增加成核密度以實現(xiàn)傳熱效率的大幅度提升已成為當前研究熱點。受生物靈感啟發(fā)，可用于冷凝傳熱強化的仿蟬翼超疏水界面、仿沙漠甲蟲親疏水復合界面以及仿豬籠草超潤滑界面研究體系已取得突破性進展。本綜述簡要回顧了該領域的最新進展及各自存在的問題。相關總結(jié)將有助于進一步設計開發(fā)有應用前景的高效冷凝傳熱界面材料及相變熱控器件。

Abstract:

With the development of miniaturization, integration and high power of electronic devices and their urgent need for technologies enabling to solve high heat flux density dissipation at small-scale space, research on high-efficiency condensation heat transfer (CHT) interface materials has attracted widespread attention. Compared with filmwise condensation, dropwise condensation is a type of more efficient heat transfer way. However, discrete condensate drops on ordinary hydrophobic flat surfaces only can depart under gravity with relatively higher drop thermal resistance and slower renewal frequency, which is disadvantage to CHT. Clearly, how to realize high-density self-renewal of small-scale condensate microdrops for more efficient energy transport has become current research focus. So far, great breakthrough has been made in the development of bio-inspired surfaces for enhancing CHT, including superhydrophobic surfaces mimicking cicada wings, hydrophilic-hydrophobic hybrid surfaces mimicking desert beetles and super-slippery surfaces mimicking the peristome of pitcher plants. In this review, we briefly summarize their latest progress and respective issues, which are helpful to develop high-efficiency CHT interface materials for phase-change-based heat dissipation devices.