Temperature-responsive peristome-structured smart surface for the unidirectional controllable motion of large droplets

作     者：Yunyun Song Jialei Yang Xu Zhang Zhongqiang Zhang Xinghao Hu Guanggui Cheng Yan Liu Guojun Lv Jianning Ding 

作者机构：Institute of Intelligent Flexible MechatronicsSchool of Mechanical EngineeringJiangsu UniversityZhenjiang 212013P.R.China State Key Laboratory of Structural Analysis for Industrial EquipmentDepartment of Engineering MechanicsFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024P.R.China Key Laboratory of Bionic Engineering(Ministry of Education)Jilin UniversityChangchun 130022P.R.China School of Environmental and Chemical EngineeringJiangsu University of Science and TechnologyZhenjiang 212003P.R.China School of Mechanical EngineeringYangzhou UniversityYangzhou 225127 JiangsuP.R.China 

出 版 物：《Microsystems & Nanoengineering》 (微系统与纳米工程（英文）)

年 卷 期：2023年第9卷第5期

页      面：219-232页

核心收录：

学科分类：08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Foundation of China(Nos.52005222,12272151,and 52105057) Major Program of National Natural Science Foundation of China(NSFC)for Basic Theory and Key Technology of Tri-Co Robots(92248301) Natural Science Foundation of Jiangsu Province(Grant no.BK20200916) Key Research Project of Zhejiang lab(No.K2022NB0AC04) Open Fund for Key Laboratory of Bionic Engineering(Ministry of Education)of Jilin University(K202207) Qing Lan Project and 333 Project of Jiangsu Province 

主　　题：unidirectional surface motion 

摘      要：The manipulation of fast,unidirectional motion for large droplets shows important applications in the fields of fog collection and biochemical ***,driving large droplets(5μL)to move directionally and quickly remains challenging due to the nonnegligible volume ***,we fabricated a scalable,bionic peristome substrate with a microcavity width of 180μm using a 3D printing method,which could unidirectionally drive a large water droplet(~8μL)at a speed reaching 12.5 mm/s by temperature-responsive *** substrate surface was grafted with PNIPAAm,which could reversibly change its wettability in response to temperature,thereby enabling a temperature-responsive smart surface that could regulate droplet movement in real-time by changing the temperature.A series of temperature-responsive smart patterns were designed to induce water transport along specific paths to further realize controllable droplet motion with the antibacterial treatment of predesignated *** ability to achieve temperature-responsive unidirectional motion and dynamic control of droplet movement could allow programmable fluidic biosensors and precision medical devices.