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Updated: Mar 7, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

Phased peristaltic micropumping for continuous sampling and hardcoded droplet generation.

Adrian M Nightingale¹, Gareth W H Evans¹, Peixiang Xu²

¹Faculty of Engineering and the Environment, University of Southampton, Southampton, SO17 1BJ UK. x.niu@soton.ac.uk and Institute for Life Sciences, University of Southampton, Southampton, SO17 1BJ UK.

|February 21, 2017

Summary

This summary is machine-generated.

This study introduces a novel peristaltic micropump for robust droplet generation in microfluidics. This method enables precise control over droplet composition for chemical analysis, moving beyond lab settings.

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A Microfluidic Chip for ICPMS Sample Introduction

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Published on: March 5, 2015

Area of Science:

Biochemical analysis
Microfluidics engineering

Background:

Droplet microfluidics is a key tool for analyzing small sample volumes.
Conventional droplet generation methods (T-junction, flow focusing) are sensitive to flow conditions and fluid properties.

Purpose of the Study:

To present an alternative, robust method for droplet generation using a peristaltic micropump.
To demonstrate controllable droplet dynamics and composition for chemical operations.
To enable field-deployable microfluidic applications.

Main Methods:

Utilized a peristaltic micropump to deliver aqueous and oil phases in antiphase pulses.
Developed a "chopping"-like droplet generation technique.
Integrated sample collection and droplet generation near the sampling site.

Main Results:

Achieved droplet generation insensitive to liquid properties and flow rates.
Demonstrated controllable droplet volumes determined solely by pump design.
Enabled hardcoding of droplet sequences for chemical operations like titrations and dilutions.

Conclusions:

The peristaltic micropump offers a robust and controllable approach to droplet generation.
This method facilitates in situ sampling and chemical measurement.
The technology is suitable for field-deployable droplet microfluidics applications.