Dynamic magnetic manipulation using electric field addressed ferrofluidic droplets

Pan, Chenlu; Park, Sung-Yong; Gao, Lanyu; Chiou, Eric P. Y.

doi:10.1109/memsys.2008.4443737

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…[31]. The movement of the magnetic droplets on a flat surface was primarily determined by the magnetic force [32] and interface resistance [33].…”

Section: Magnetic Manipulations Of Dropletmentioning

confidence: 99%

“…The static magnetic field produced by permanent magnets can furnish a consistent and stable magnetic field [43], while electromagnets can generate adjustable magnetic fields [44]. Through the integration of electromagnets and permanent magnets in a hybrid magnet system [32], the combined magnetic fields from both sources can synergize, creating high-intensity magnetic fields. This configuration enables accurate adjustment of local magnetic fields, providing greater flexibility in the manipulation of magnetic droplets.…”

Section: Magnetic Actuation Based On Permanent Magnets or Electromagnetsmentioning

confidence: 99%

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Recent Advances in Magnetically Actuated Droplet Manipulation for Biomedical Applications

Li,

Su,

Liu

et al. 2024

Magnetochemistry

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The manipulation of droplets plays a vital role in biomedicine, chemistry, and hydromechanics, especially in microfluidics. Magnetic droplet manipulation has emerged as a prominent and advanced technique in comparison to other modes such as dielectric infiltration, optical radiation, and surface acoustic waves. Its notable progress is attributed to several advantages, including excellent biocompatibility, remote and non-contact control, and instantaneous response. This review provides a comprehensive overview of recent developments in magnetic droplet manipulation and its applications within the biomedical field. Firstly, the discussion involves an examination of the distinctive features associated with droplet manipulation based on both permanent magnet and electromagnet principles, along with a thorough exploration of the influencing factors impacting magnetic droplet manipulation. Additionally, an in-depth review of magnetic actuation mechanisms and various droplet manipulation methods is presented. Furthermore, the article elucidates the biomedical applications of magnetic droplet manipulation, particularly its role in diagnostic assays, drug discovery, and cell culture. Finally, the highlights and challenges of magnetic droplet manipulation in biomedical applications are described in detail.

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“…[31]. The movement of the magnetic droplets on a flat surface was primarily determined by the magnetic force [32] and interface resistance [33].…”

Section: Magnetic Manipulations Of Dropletmentioning

confidence: 99%

Section: Magnetic Actuation Based On Permanent Magnets or Electromagnetsmentioning

confidence: 99%

Recent Advances in Magnetically Actuated Droplet Manipulation for Biomedical Applications

Li,

Su,

Liu

et al. 2024

Magnetochemistry

View full text Add to dashboard Cite

show abstract

“…Moreover, the main attention in magnetic fluids and deposit manipulation is paid to the application of a magnetic field, while the electrophoretic behavior of the droplets is less known. There are several articles devoted to the electric manipulation of magnetic droplets on a surface or in capillaries [23][24][25] but, to the best of our knowledge, the data about combined magnetoand electrophoretic deposit formation is absent.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying

2023

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Drop casting is a widely used approach for surface modification and the creation of functional coatings. Drying of sessile droplets is often associated with a so-called coffee-ring effect which originates from a non-uniform evaporation rate in the liquid–air and results in the formation of non-planar deposits. In the last two decades, this phenomenon attracted a lot of attention as a potential approach towards surface modification and structuring, resulting in an increased interest to control the morphology of the formed deposits. Here, we describe the effect of magnetic and electric fields individually and in combination on the processes of deposit formation for drops of water- or kerosene-based magnetic fluids. For the water-based fluid, the relative inner deposit density showed a linear dependence on the applied electric potential in the range from −5 to +5 V and varied from 100% to 31%, while kerosene-based fluid did not respond to the electric field. The combination of electric and magnetic fields allowed more complex control over the morphology of the deposits and to separate the annular deposit from the main one by the rim up to 0.3 mm. The theoretical basis behind the observed effects is discussed.

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Dynamic magnetic manipulation using electric field addressed ferrofluidic droplets

Cited by 2 publications

References 9 publications

Recent Advances in Magnetically Actuated Droplet Manipulation for Biomedical Applications

Recent Advances in Magnetically Actuated Droplet Manipulation for Biomedical Applications

The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying

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