Related Experiment Video
Updated: Jul 23, 2025
11:40
A Droplet-Based Microfluidic Approach and Microsphere-PCR Amplification for Single-Stranded DNA Amplicons
Published on: November 14, 2018
8.6K
Hybrid Digital-Droplet Microfluidic Chip for Applications in Droplet Digital Nucleic Acid Amplification: Design,
Beatriz J Coelho1,2, Joana P Neto1, Bárbara Sieira1
1CENIMAT|i3N, Department of Materials Science, NOVA School of Science and Technology, Campus de Caparica, NOVA University of Lisbon and CEMOP/UNINOVA, 2829-516 Caparica, Portugal.
Sensors (Basel, Switzerland)
|July 11, 2023
Summary
This study combines digital microfluidics (DMF) and droplet microfluidics (DrMF) for enhanced droplet generation. The hybrid platform offers controlled nano-liter droplet production for micro- and nano-assays.
Area of Science:
- Microfluidics and Nanotechnology
- Chemical and Biological Assays
Background:
- Microfluidic platforms are crucial for miniaturized chemical and biological assays.
- Combining different microfluidic approaches can overcome individual limitations and enhance capabilities.
Purpose of the Study:
- To develop and evaluate a hybrid microfluidic device integrating digital microfluidics (DMF) and droplet microfluidics (DrMF).
- To leverage DMF for controlled droplet manipulation and supply to a high-throughput droplet generator.
- To assess the performance of the hybrid DMF-DrMF system in terms of droplet characteristics and compare it to standalone droplet microfluidics (DrMF).
Main Methods:
- Integration of digital microfluidics (DMF) and droplet microfluidics (DrMF) on a single substrate.
- Utilizing DMF for droplet mixing and as a liquid supplier for a nano-liter droplet generator.
- Employing dual pressure control (negative for aqueous, positive for oil) in a flow-focusing region for droplet generation.
Main Results:
- The hybrid DMF-DrMF devices demonstrated controlled droplet production with customizable volumes and speeds.
- Throughput of the hybrid system was comparable to standalone DrMF devices, achieving up to four droplets per second.
- Generated droplets reached speeds up to 1540 µm/s with volumes as low as 0.5 nL.
Conclusions:
- Hybrid DMF-DrMF devices offer enhanced control over droplet generation compared to standalone systems.
- This integrated approach provides a versatile platform for high-throughput nano-liter droplet generation in microfluidic applications.
- The developed technology holds promise for advancing micro- and nano-scale chemical and biological assays.
