Control of Ferrofluid Droplets in Microchannels by Uniform Magnetic Fields

被引：22

作者：

Varma, Vijaykumar B. ^{[1
]}

Ray, Ayan ^{[1
]}

Wang, Zhaomeng ^{[1
]}

Wang, Zhiping ^{[2
]}

Wu, Ruige ^{[2
]}

Jayaneel, P. J. ^{[3
]}

Sudharsan, Natteri Mangadu ^{[3
]}

Ramanujan, Raju V. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Singapore Inst Mfg Technol, Singapore 638075, Singapore

[3] Rajalakshmi Engn Coll, Dept Mech Engn, Chennai 602105, Tamil Nadu, India

来源：

IEEE MAGNETICS LETTERS | 2016年 / 7卷

关键词：

Magnetochemistry; droplet micromagnetofluidics; ferrofluid droplets; lab-on-a-chip; MICROPARTICLES; MICROFLUIDICS; DEFORMATION; SIMULATION; PARTICLES;

D O I：

10.1109/LMAG.2016.2594165

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magnetic droplets are versatile tools for a range of lab-on-a-chip (LoC) applications. The combination of a uniform magnetic field and magnetic droplet offers wireless and programmable manipulation. We performed LoC experiments and numerical studies on ferrofluid droplets under the influence of a uniform magnetic field. The dynamic behavior of flowing ferrofluid droplets was examined. The droplet size, shape, interdroplet spacing and velocity could be controlled by tuning the magnetic susceptibility of the ferrofluid, the viscosity of the carrier medium, and the flow rates. Our droplet-based micromagnetofluidic numerical model is in good agreement with our experiments. These studies are useful for magnetic droplet control and mixing in a LoC using a uniform magnetic field.

引用

页数：5

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