ER Fluid Inks: A Rainbow of Possibilities

Weiss, Keith D.; Nixon, D. A.; Carlson, J. D.; Margida, Anthony J.

doi:10.1007/978-1-4899-1036-3_16

Cited by 12 publications

(12 citation statements)

References 4 publications

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“…The suspension with particle conductivity around 10 Ϫ7 S/m would have a response time around 1 ms. The data presented by Weiss et al (11) indicate that the response time is inversely proportional to the particle conductivity, strongly supporting the Wagner prediction. Also, Eq.…”

Section: Resultssupporting

confidence: 54%

“…However, the currently observed phenomena are not well understood using these models. For example, some materials have a comparatively large dielectric constant but do not display any ER effect (9, 10); the particle dielectric loss tangent around 0.10 at 1000 Hz is an essential requirement for a high performance ER fluid (9,10); the fluid with high conductive particles usually has a short response time (11); the strongest ER effect takes place in the suspension with the particle conductivity around 10 Ϫ7 S/m (12); and a high frequency electric field or a high temperature can improve the ER effect of some materials markedly (13,14), while weakening the ER effect of other materials dramatically (14 -16). In this paper, we try to systematically understand these ER phenomena using the Wagner model (17)(18)(19).…”

Section: Introductionmentioning

confidence: 99%

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The Interfacial Polarization-Induced Electrorheological Effect

Hao

1998

Journal of Colloid and Interface Science

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Section: Resultssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

The Interfacial Polarization-Induced Electrorheological Effect

Hao

1998

Journal of Colloid and Interface Science

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“…The MR rheology depends on the particle shape distribution, particle concentration, additional additives, properties of the carrier fluid, temperature and the applied magnetic field [48]. Polyesters, mineral and silicone oils, synthetic hydrocarbons, polyethers, and water are common carrier liquids [40,[49][50][51][52][53][54][55][56]. In order to reduce aggregation and sedimentation, additives may be used.…”

Section: Mr Fluid Characteristicsmentioning

confidence: 99%

A Review on Parametric Dynamic Models of Magnetorheological Dampers and Their Characterization Methods

et al. 2018

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Magnetorheological (MR) fluids are capable of manifesting a rheological behaviour change by means of a magnetic field application and can be employed in many complex systems in many technical fields. One successful example is their use in the development of dampers: magnetorheological dampers (MRDs) are widespread in vibration control systems, as well as civil engineering applications (i.e., earthquake or seismic protection), impact absorption and vibration isolation technology in industrial engineering, and advanced prosthetics in biomedical fields. In the past, many studies have been conducted on MRDs modeling and characterization, but they have usually been focused more on the theoretical models than on the experimental issues. In this work, an overview of both of them is proposed. In particular, after an introduction to the physics of the magnetorheological effect, a short review of the main mathematical models of MRDs is proposed. Finally, in the second part of this study an overview of the main issues that occur in MRDs experimental characterization is reported and discussed.

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“…Aiming to further apply our fabricated FeCo-MRF to industry, we used as the liquid carrier, the widely known mineral oil [14]. It was purchased from Acros Organics TM (Fair Lawn, NJ, USA) and had a density of 0.8697 g/cm 3 (as determined by an Anton Paar DMA 500 densimeter) and a refractive index of 1.4766 (as determined by an RXA 156 refractometer).…”

Section: Methodsmentioning

confidence: 99%

Aspects Concerning the Fabrication of Magnetorheological Fluids Containing High Magnetization FeCo Nanoparticles

Gutiérrez

Vadillo

Gómez

et al. 2021

Fluids

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Recently, our collaborative work in the fabrication of a magnetorheological fluid (MRF) containing high magnetization FeCo nanoparticles (NPs, fabricated in our laboratories using the chemical reduction technique; MS = 212 Am2/kg) as magnetic fillers have resulted in a new MRF with superior performance up to 616.7 kA/m. The MRF had a yield stress value of 2729 Pa and good reversibility after a demagnetization process. This value competes with the best ones reported in the most recent literature. Nevertheless, the fabrication process of this type of fluid is not an easy task since there is a strong trend to the aggregation of the FeCo NPs due to the strong magnetic dipolar interaction among them. Thus, now we present the analysis of some aspects concerning the fabrication process of our FeCo NPs containing MRF, mainly the type of surfactant used to cover those NPs (oleic acid or aluminium stearate) and its concentration, and the procedure followed (mechanical and/or ultrasound stirring) to achieve a good dispersion of those magnetic fillers within the fluid.

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ER Fluid Inks: A Rainbow of Possibilities

Cited by 12 publications

References 4 publications

The Interfacial Polarization-Induced Electrorheological Effect

The Interfacial Polarization-Induced Electrorheological Effect

A Review on Parametric Dynamic Models of Magnetorheological Dampers and Their Characterization Methods

Aspects Concerning the Fabrication of Magnetorheological Fluids Containing High Magnetization FeCo Nanoparticles

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