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Title: Droplet merging on a lab-on-a-chip platform by uniform magnetic fields
Authors: Varma, Vijaykumar Babulalji
Ray, Ayan
Wang, Zhao Meng
Wang, Zhi Ping
Ramanujan, Raju Vijayaraghavan
Keywords: DRNTU::Engineering::Materials
Magnetic Properties and Materials
Droplet-based Microfluidic
Issue Date: 2016
Source: Varma, V. B., Ray, A., Wang, Z. M., Wang, Z. P., & Ramanujan, R. V. (2016). Droplet merging on a lab-on-a-chip platform by uniform magnetic fields. Scientific Reports, 6, 37671-. doi:10.1038/srep37671
Series/Report no.: Scientific Reports
Abstract: Droplet microfluidics offers a range of Lab-on-a-chip (LoC) applications. However, wireless and programmable manipulation of such droplets is a challenge. We address this challenge by experimental and modelling studies of uniform magnetic field induced merging of ferrofluid based droplets. Control of droplet velocity and merging was achieved through uniform magnetic field and flow rate ratio. Conditions for droplet merging with respect to droplet velocity were studied. Merging and mixing of colour dye + magnetite composite droplets was demonstrated. Our experimental and numerical results are in good agreement. These studies are useful for wireless and programmable droplet merging as well as mixing relevant to biosensing, bioassay, microfluidic-based synthesis, reaction kinetics, and magnetochemistry.
DOI: 10.1038/srep37671
Schools: School of Materials Science & Engineering 
Rights: © 2016 The Authors (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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