Microfluidic Systems for Droplet Generation in Aqueous Continuous Phases: A Focus Review

Area of Science:

• * Microfluidics and its applications in food and pharmaceutical formulation.
• * Interdisciplinary research in scientific disciplines.

Background:

• * Microfluidics has seen widespread application across scientific fields over the last two decades.
• * Challenges arise when integrating microfluidics with aqueous media, particularly in droplet generation.
• * The unique physical properties of liquids at the microscale complicate microdroplet formation.

Purpose of the Study:

• * To provide an introductory overview of microdroplet generation in microfluidic systems using aqueous continuous phases.
• * To highlight state-of-the-art techniques and devices for creating microdroplets in aqueous media.
• * To guide researchers new to microfluidic aqueous systems.

Main Methods:

• * Review of microfluidic devices designed for aqueous continuous phases.
• * Analysis of droplet generation mechanisms in microscale systems.
• * Examination of interfacial phenomena between device channels and emulsions.

Main Results:

• * Discussion of various microfluidic devices suitable for aqueous systems.
• * Overview of applications in forming diverse emulsions and particles.
• * Emphasis on the critical role of the interface in microfluidic droplet generation.

Conclusions:

• * Microfluidics offers significant potential for food and pharmaceutical formulation, despite challenges with aqueous media.
• * Understanding interfacial properties is key to successful microdroplet generation.
• * Exploration of novel materials for microfluidic devices with aqueous phases is recommended.