New Actuators Using ER Fluid and Their Applications to Force Display Devices in Virtual Reality and Medical Treatments

Furusho, Junji; Sakaguchi, Masamichi

doi:10.1142/s0217979299002253

Cited by 74 publications

(25 citation statements)

References 3 publications

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“…Under an electric field, the flow is well assumed to be the Bingham flow. Because a characteristic response time of the ER micro-suspension is on the order of milliseconds 2,3) , there are substantial expectations for practical applications [4][5][6] , such as dampers, clutches, valves, robotics, force display devices, and so on.…”

Section: )mentioning

confidence: 99%

Flow Behavior and Microstructure Developed between Parallel Plate Electrodes for Electro-Rheological Nano-Suspensions under No External Electric Fields

Tanaka

Nakagawa

Akiyama

2010

J. Soc. Rheol., Jpn

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The flow behavior of nano-suspensions with particle volume fractions of f = 2.4 and 4.4 vol% was investigated under no electric fields using a rotational rheometer with fixtures of parallel plates (or electrodes), the gap distances of which were narrower than several hundred micrometers. For the sample of f = 4.4 vol%, the apparent yield stress was observed with gap distances of 50 mm and 300 mm. On the other hand, the flow behavior was strongly dependent on the gap distance for the sample of 2.4 vol%. These results were discussed in terms of the size of the microstructure and the gap distance between the parallel plates of the rheometer.

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Section: )mentioning

confidence: 99%

Flow Behavior and Microstructure Developed between Parallel Plate Electrodes for Electro-Rheological Nano-Suspensions under No External Electric Fields

Tanaka

Nakagawa

Akiyama

2010

J. Soc. Rheol., Jpn

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“…A 3-D Rehabilitation System for Upper Limbs "EMUL", and a 6-DOF Rehabilitation System "Robotherapist", and Other Rehabilitation Systems with High Safety 119 Figure 4 shows the 2-DOF rehabilitation systems "NIHO-1" using ER actuators (Furusho & Sakaguchi, 1999). The rehabilitation training system was installed in a hospital for testing purpose.…”

Section: Rehabilitation and Force Display Systems Using Er Fluidsmentioning

confidence: 99%

A 3-D Rehabilitation System for Upper Limbs "EMUL", and a 6-DOF Rehabilitation System "Robotherapist" and Other Rehabilitation Systems with High Safety

Furusho¹,

Kikuchi²

2007

Rehabilitation Robotics

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“…A suspension composed of microparticles and insulating oil is known to show the ER effect [1]. Because a characteristic response time of the ER microsuspension is on the order of milliseconds [2,3], there are many possible expectations for applications [4][5][6], such as dampers, clutches, valves, robotics, force display devices, and so on.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous observations of microgap flow behavior and microstructure of electro-rheological nano-suspensions based on titanium dioxide nano-particles

et al. 2015

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Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter around 400 nm and a chemically modified silicone oil with a viscosity of 0.04 Pa·s were prepared. Microgap flow behavior in the absence of an external electric field and the ER responses were investigated in relation to the microstructure observed in the quiescent state. The effects of the continuous phase of suspending oil and particle volume fraction were reported for the nano-suspensions. For the modified silicone oil-based nano-suspensions of 8.8 and 12 vol %, no plateau stresses were observed, whereas a plateau stress around 5 Pa was found only for the nano-suspension of 20 vol %. On the other hand, the ER effect of the modified silicone oil-based nano-suspension of 20 vol % was comparable to that of the silicone oil-based nano-suspension of 12 vol %. Simultaneous optical observations with the ER effect were also performed for the nano-suspension of 20 vol %. The effects of shear rate and time on the shear stress and flow behavior in the presence (or absence) of the dc electric field were reported, showing unexpected reduction of the ER effect and the shear thinninglike behavior with flow instability at higher shear rates. Possible factors for improving the ER effect were discussed in the present paper.

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New Actuators Using ER Fluid and Their Applications to Force Display Devices in Virtual Reality and Medical Treatments

Cited by 74 publications

References 3 publications

Flow Behavior and Microstructure Developed between Parallel Plate Electrodes for Electro-Rheological Nano-Suspensions under No External Electric Fields

Flow Behavior and Microstructure Developed between Parallel Plate Electrodes for Electro-Rheological Nano-Suspensions under No External Electric Fields

A 3-D Rehabilitation System for Upper Limbs "EMUL", and a 6-DOF Rehabilitation System "Robotherapist" and Other Rehabilitation Systems with High Safety

Simultaneous observations of microgap flow behavior and microstructure of electro-rheological nano-suspensions based on titanium dioxide nano-particles

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