Microdroplet splitting and mixing by portable triboelectric nanogenerator  

作　　者：Qi Gao Qin Xiang Wenkai Liu Mengru Ding Wei Long Jianlong Wang Xiaojun Cheng Hengyu Li Zhong Lin Wang Tinghai Cheng 

机构地区：[1]Guangzhou Institute of Blue Energy,Knowledge City,Huangpu District,Guangzhou 510555,China [2]State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou 310027,China [3]Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,China [4]Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China

出　　处：《Nano Research》2025年第2期741-750,共10页纳米研究(英文版)

基　　金：The authors are grateful for the support from the National Natural Science Foundation of China(No.52405052);the Open Foundation of the State Key Laboratory of Fluid Power and Mechatronic Systems(No.GZKF-202305);the Postdoctoral Fellowship Program(Grade B)of China Postdoctoral Science Foundation(No.GZB20230731);the National Key R&D Project from Minister of Science and Technology(No.2021YFA1201601).

摘　　要：Theadvancementofdigital microfluidics technology has been pivotal in academic research andengineering applications.However,the prevailing limitation is that traditional voltage sources generate an excess of Joule heat,adversely impacting droplet operation.Moreover,the power supply equipment required by digital microfluidics limits its applications.Here,we propose a self-powered microdroplet manipulation(SMDM)via triboelectric nanogenerator(TENG),which presents a capability for spliting and mixing different kinds of droplets.Fundamentally,SMDM is based on the electroosmotic flow principle,thereby enabling droplet spliting in the range of from 2 to 630μL.Notably,for droplet spliting in the range of from 5 to 60μL,the TENG only requires a power output ranging from 2.704 to 6.084 mW.In addition,SMDM demonstrates proficiency in droplet mixing,which achieves complete mixing of 10μL droplets in 60 s and 30μL droplets in a mere 53 s.Therefore,leveraging the strengths of the TENG,a self-powered microdroplet manipulated system is designed for digital microfluidics.It carries significant advantages over the traditional voltage source,including self-powered,low-Joule heat,increased safety and enhanced portability.This research provides a new solution for portable applications of digital microfluidics.

关 键 词：triboelectric nanogenerator microdroplet manipulation digital microfluidics droplet splitting droplet mixing 

分 类 号：O35[理学—流体力学]