Professor. Sushanta Mitra

(Department of Mechanical & Mechatronics Engineering, University of Waterloo, Canada)

“Liquid-Liquid Encapsulation: A game-changing Technology”

Abstract

The talk will present some of my group’s fascinating research on encapsulation. We demonstrate the development of a robust liquid-liquid encapsulation framework where a thin layer of another shell-forming liquid stably wraps a liquid core analyte. Two approaches to achieve encapsulation are discussed – impact-driven and magnet-assisted. The underlying mechanism leading to encapsulation are explored in detail for both approaches. We show that successful encapsulation by either approach provides efficient protection to the core analyte even in aggressive surroundings. Multiple practical use cases are reported, including ultrafast encapsulation, shell-hardening, and subsequent extraction/handling of the wrapped cargo, the formation of encapsulated compound droplets with similar/dissimilar core compositions.
Further, impact-driven encapsulation with a magnetoresponsive (ferrofluid) shell layer is also illustrated, which allows magnet-assisted efficient, non-contact manipulation of the encapsulated cargo, including translation, controlled coalescence, and the release of the inner core.

Associate Prof. Hideaki Teshima

(Multiscale Science and Engineering for Energy and the Environment Thrust)

English

I²CNER Webinar_20250821