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.
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).
