Fluidic components based on ferrofluids

Menz, A.; Benecke, W.; Perez‐Castillejos, Raquel; Plasza, J.A.; Estéve, J.; Garcia, Nissa; Higuero, J.; Diez-Caballero, T.

doi:10.1109/mmb.2000.893792

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…The future generation is undoubtedly going to experience the tremendous contribution of these materials in every aspect of life. Among the various smart materials explored, for instance, triboelectric and piezoelectric materials, [1][2][3] flexible shape memory alloys, [4,5] magnetic ferrofluids, [6][7][8][9][10] multifunctional polymer composites [11][12][13] and soft dielectric elastomers (DEs) possess a particularly impressive role in automation and soft robotics [14,15] that are capable of changing our lives enormously. DEs are categorized as a type of electroactive polymer (EAP) that can generate large deformation under electrical bias.…”

Section: Introductionmentioning

confidence: 99%

The role of chemical microstructures and compositions on the actuation performance of dielectric elastomers: A materials research perspective

et al. 2023

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Dielectric elastomer actuators (DEAs) are one of the emerging areas of investigation in smart elastomer research and have attracted considerable interests due to their wide‐ranging applications, for instance in automation and soft robotic components. Commonly utilized dielectric elastomers (DEs) such as nitrile butadiene rubber (NBR) and its hydrogenated and carboxylated derivatives along with the dielectric fillers (titanium oxide, barium titanate, etc.) were considered to be one of the most established composite systems demonstrating high actuation performance. When subjected to external electrical field, the DEAs derived from the composites were, therefore, capable of reproducing high energy density and large deformation with fast response time. The recent research emphasizes that tunable material properties eventually triggered the improved actuation performance. The exploration of compliant electrodes fabricated by the conventional and state‐of‐the‐art lithographic methods was also crucial to improve actuation performance for the soft robotic applications. This review summarizes the commonly used DEs and dielectric fillers, their performances and challenges, and outlines the research progress (experimental and theoretical) in the field of actuators. Finally, a brief introduction to DEA‐based soft robotics application is also presented.

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Section: Introductionmentioning

confidence: 99%

The role of chemical microstructures and compositions on the actuation performance of dielectric elastomers: A materials research perspective

et al. 2023

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“…Examples of inclinometers are given in [3] and [4]. Several examples of actuators are also achievable, such as micropipettes [5], rotative micropumps [6], alternative micropumps and valves [7]- [9], electromagnetic micropumps [10], linear magnetic pumps [11], and contactless operated pumps [12], [13]. Actually, the use of ferrofluids as active mass for inertial sensors is valuable for the realization of devices with tunable characteristic.…”

Section: Introductionmentioning

confidence: 99%

An IR Methodology to Assess the Behavior of Ferrofluidic Transducers—Case of Study: A Contactless Driven Pump

2011

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A single drop of ferrofluid can be used as active mass in an innovative pump scheme. The absence of mechanical moving parts and solid-inertial masses provides high reliability and the possibility to implement the pumping mechanism on preexisting channels. The main focus of this paper is to describe the IR-based technique adopted to "observe" the cap movement inside the channel of the developed pump, thus validating the supposed pumping mechanism. Moreover, experiments have been performed on the pump prototype in order to estimate the average amount of pumped liquid, the drop pressure, and the flow rate as functions of frequency and amplitude of the driving signals.

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“…Pérez-Castillejos et al [1] reported the magnetic valving action of a ferrofluidic plug in a microfluidic system. Menz [2] presented microfluidic systems containing ferrofluids displaced with mobile magnets. Herb [3] designed many different types of microchannels with microvalve and micropump of ferrofluid to control the fluid.…”

Section: Introductionmentioning

confidence: 99%

A Novel Application of Ferrofluid Actuation with PDMS Microchannel

Chang

Lin

2010

2010 4th International Conference on Bioinformatics and Biomedical Engineering

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Ferrofluid is usually used as actuation medium in micropump or microvalve where most microchannels were fabricated with PMMA or silicon. The manufacturing is timeconsuming and costly. In this paper, we present a novel microchip design based on the magnetic actuation of ferrofluid. The device contains plugs and pistons formed by a ferrofluid which is actuated by an external NdFeB permanent magnet. The ferrofluid used for this application is a colloidal suspension of nanosize Fe 3 O 4 particles in a carrier fluid that is mixed with silicone oil and hexane. The microchannel was fabricated by Poly (dimethylsiloxane) (PDMS) with four reaction zones. The experimental result shows that the ferrofluidic actuation of fluid in the PDMS microchannel was feasible. However, leakage and swelling in the PDMS microchannel might lead to fluid actuation problems. The result also reveals that it has potential application in biochip.

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Fluidic components based on ferrofluids

Cited by 9 publications

References 3 publications

The role of chemical microstructures and compositions on the actuation performance of dielectric elastomers: A materials research perspective

The role of chemical microstructures and compositions on the actuation performance of dielectric elastomers: A materials research perspective

An IR Methodology to Assess the Behavior of Ferrofluidic Transducers—Case of Study: A Contactless Driven Pump

A Novel Application of Ferrofluid Actuation with PDMS Microchannel

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