The “One drop” ferrofluidic pump with analog control

Andò, B.; Ascia, A.; Baglio, Salvatore; Beninato, Angela

doi:10.1016/j.sna.2009.05.006

Cited by 27 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using a ferrofluid plug as an actuator requires this condition because magnetic force should overcome both surface tension and friction to move the plug. In the case of the pump reported by Ando et al (2009a, b) the magnetic force should be large enough to deform the liquid interface, thus a large magnetic Bond number is needed.…”

Section: Ferrohydrodynamicsmentioning

confidence: 99%

“…The direction of the induced magnetic force is controlled by the relative position between the the T-junction and the magnet. Both direction and magnitude of the magnetic force can be used (Pal et al 2011); b annular pump with two ferrofluid plugs (Hatch et al 2001); c annular pump with one ferrofluid plug (Sun et al 2007); d peristaltic pump (Ando et al 2009a); e pump with three ferrofluid valves (Ando et al 2009b); f pump with check valves and ferrofluid piston (Yamahata et al 2005); g stepper ferrohydrodynamic pump to tune the size of the formed ferrofluid droplets. In a uniform magnetic field, the magnetic body force disappears due to the missing field gradient.…”

Section: Ferrohydrodynamicsmentioning

confidence: 99%

“…Synchronizing the motions of the pistons and the two valves allow pumping of both air and water. The pump cycle of 30 minutes makes the pump not practical for most applications Ando et al (2009a). used a permanent magnet to keep a Hartman numbers of reviewed MHD micropumps versus Reynolds number (a) and magnetic Reynolds number (…”

mentioning

confidence: 99%

See 2 more Smart Citations

Micro-magnetofluidics: interactions between magnetism and fluid flow on the microscale

Nguyen

2011

Microfluid Nanofluid

346

169

View full text Add to dashboard Cite

Micro-magnetofluidics refers to the science and technology that combines magnetism with microfluidics to gain new functionalities. Magnetism has been used for actuation, manipulation and detection in microfluidics. In turn, microfluidic phenomena can be used for making tunable magnetic devices. This paper presents a systematic review on the interactions between magnetism and fluid flow on the microscale. The review rather focuses on physical and engineering aspects of micro-magnetofluidics, than on the biological applications which have been addressed in a number of previous excellent reviews. The field of micromagnetofluidics can be categorized according to the type of the working fluids and the associated microscale phenomena of established research fields such as magnetohydrodynamics, ferrohydrodynamics, magnetorheology and magnetophoresis. Furthermore, similar to microfluidics the field can also be categorized as continuous and digital micro-magnetofluidics. Starting with the analysis of possible magnetic forces in microscale and the impact of miniaturization on these forces, the paper revisits the use of magnetism for controlling fluidic functions such as pumping, mixing, magnetowetting as well as magnetic manipulation of particles. Based on the observations made with the state of the art of the field micro-magnetofluidics, the paper presents some perspectives on the possible future development of this field. While the use of magnetism in microfluidics is relatively established, possible new phenomena and applications can be explored by utilizing flow of magnetic and electrically conducting fluids.

show abstract

Section: Ferrohydrodynamicsmentioning

confidence: 99%

Section: Ferrohydrodynamicsmentioning

confidence: 99%

See 1 more Smart Citation

Micro-magnetofluidics: interactions between magnetism and fluid flow on the microscale

Nguyen

2011

Microfluid Nanofluid

346

169

View full text Add to dashboard Cite

show abstract

“…In particular, the inclinometer presented in [3] exploits two ferrofluidic cushions to reduce friction forces acting on the magnetic core when an external tilt is applied. In [5][6] innovative ferrofluidic transducers are presented. In particular, in [5] a ferrofluidic pump was realized; in this device a ferrofluidic mass, inside a pipe filled with de-ionized water, acts both as valve and as plunger to move the fluid from a inlet to an outlet.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, in [5] a ferrofluidic pump was realized; in this device a ferrofluidic mass, inside a pipe filled with de-ionized water, acts both as valve and as plunger to move the fluid from a inlet to an outlet. In [6] the device exploits a ferrofluidic mass free-to-move inside a glass pipe filled with de-ionized water; a readout strategy senses the mass position which depends on the applied tilt. The idea to use ferrofluids as the active mass in inertial sensors offers the opportunity to control the device specifications by manipulating the ferrofluidic core properties (such as viscosity, volume, etc.)…”

Section: Introductionmentioning

confidence: 99%

Behavior Analysis of a Ferrofluidic Gyroscope Performances

2009

View full text Add to dashboard Cite

In this work a gyroscope using a ferrofluidic mass as inertial mass is presented. The device consists of a glass plate filled with deionized water with an injected ferrofluidic drop, a electromagnetic driving system to move the ferrofluidic mass back and forward along the actuation axis and a differential inductive readout system to sense the motion of the ferrofluidic sphere. An angular rate imposed to the device produces a deviation of the ferrofluidic mass trajectory which is measured by the differential readout system. Experimental surveys have been performed to characterize both the driving system and the behavior of the device.

show abstract

Actuation of adaptive liquid microlens droplet in microfluidic devices: A review

Zhu

Yao

et al. 2018

Electrophoresis

View full text Add to dashboard Cite

A significant growth of research on adaptive liquid lens is achieved over the past decades, and the field is still attracting increasing attentions, focusing on the transition from the current stage to the commercialized stage. The challenges faced are not limited to fabrication, material, small tuning range in focal lengths, additional control systems, limitations in special actuation methods and so on. In addition, the use of external driving parts or systems induce extra problem on bulky appearance, high cost, low reliability etc. Therefore, adaptive liquid lens will be an interesting research focus in both microfluidics and optofluidics science. This review attempts to summarize and focus on the droplet profile deformation under different driving mechanisms in tunable liquid microlens as well as the application in cameras, cell phone and so on. The driving techniques are generally categorized in terms of mechanisms and driving sources.

show abstract

The “One drop” ferrofluidic pump with analog control

Cited by 27 publications

References 10 publications

Micro-magnetofluidics: interactions between magnetism and fluid flow on the microscale

Micro-magnetofluidics: interactions between magnetism and fluid flow on the microscale

Behavior Analysis of a Ferrofluidic Gyroscope Performances

Actuation of adaptive liquid microlens droplet in microfluidic devices: A review

Contact Info

Product

Resources

About