Design and fabrication of triangle-pattern superwettability hybrid surface with high-efficiency condensation heat transfer performance  

作　　者：Rui Wang Yuan Tian Xuefeng Gao Lei Jiang 

机构地区：[1]Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China [2]School of Nano-Tech and Nano-Bionics,University of Science and Technology of China,Hefei 230026,China [3]Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Chemical Letters》2025年第3期449-453,共5页中国化学快报(英文版)

基　　金：supported by National Natural Science Foundation of China(No.21573276);Natural Science Foundation of Jiangsu Province(No.BK20170007);Jiangsu Funding Program for Excellent Postdoctoral Talent(No.2022ZB846).

摘　　要：Utilizing superwettability micro/nanostructures to enhance the condensation heat transfer(CHT)performance of engineering materials has attracted great interest due to its values in basic research and technological innovations.Currently,exploring facile micro/nanofabrication approaches to create high-efficiency CHT surfaces has been one of research hotspots.In this work,we propose and demonstrate a type of new superwettability hybrid surface for high-efficiency CHT,which consists of superhydrophobic nanoneedle arrays and triangularly-patterned superhydrophilic microdots(SMDs).Such hybrid surface can be fabricated by the facile growth of densely-packed ZnO nanoneedles on the Zn-electroplated copper surface followed by fluorosilane modification and mask-assisted photodegradation.Through regulating the diameters and interspaces of SMDs,we obtain the optimized triangularly-patterned hybrid surface,which shows 42.7%higher CHT coefficient than the squarely-patterned hybrid surface and 58.5%higher CHT coefficient than the superhydrophobic surface.The key of such hybrid surface design is to considerably increase CHT coefficient brought about by SMD-triggered drop sweeping at the cost of slightly reducing heat transfer area of superhydrophobic functional zone for drop jumping.Such new strategy helps develop advanced CHT surfaces for high-efficiency electronic cooling and energy utilization.

关 键 词：Superwettability Hybrid surface SUPERHYDROPHOBIC SUPERHYDROPHILIC Patterned surfaces Condensation heat transfer 

分 类 号：TK124[动力工程及工程热物理—工程热物理]