%0 Journal Article
%T On-Demand, Contact-Less and Loss-Less Droplet Manipulation via Contact Electrification.
%A Wang W
%A Vahabi H
%A Taassob A
%A Pillai S
%A Kota AK
%J Adv Sci (Weinh)
%V 11
%N 10
%D 2024 Mar 17
%M 38233209
%F 17.521
%R 10.1002/advs.202308101
%X While there are many droplet manipulation techniques, all of them suffer from at least one of the following drawbacks - complex fabrication or complex equipment or liquid loss. In this work, a simple and portable technique is demonstrated that enables on-demand, contact-less and loss-less manipulation of liquid droplets through a combination of contact electrification and slipperiness. In conjunction with numerical simulations, a quantitative analysis is presented to explain the onset of droplet motion. Utilizing the contact electrification technique, contact-less and loss-less manipulation of polar and non-polar liquid droplets on different surface chemistries and geometries is demonstrated. It is envisioned that the technique can pave the way to simple, inexpensive, and portable lab on a chip and point of care devices.