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Tunable elastic stiffness with microconfined magnetorheological domains at low magnetic field
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10.1063/1.3503969
/content/aip/journal/apl/97/16/10.1063/1.3503969
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/16/10.1063/1.3503969
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) An ultrasoft polyurethane elastomer is embedded with rigid, micropatterned ribbons that slide past each other. The tabs are enclosed in a chamber filled with MR fluid. (b) The surface of each ribbon is patterned with an array of aligned microchannels. (c) In the absence of magnetic field, the MR microparticles are randomly dispersed. (d) Under an external field of 10–35 mT, the microparticles form magnetic domains that are confined to the microchannels.

Image of FIG. 2.
FIG. 2.

Tensile strain vs stress for an applied magnetic field of (from bottom) 0, 5, 10, 15, 20, 25, 30, and 35 mT. The periodic fluctuations in tensile stress correspond to the surface microstructure, which is illustrated in Fig. 1(b), where the channels are wide, deep, spaced apart and are supported by a ribbon that is thick and 1 cm wide. The fluid-filled chamber containing the overlapping ribbons is approximately 6 cm long and so one percent strain corresponds to .

Image of FIG. 3.
FIG. 3.

Stress-strain curves for elastomers embedded with various ribbon surface geometries: (curve with circle markers) wide channels, (square) smooth surfaces, (triangle) one surface contains staggered microgrooves, (diamond) wide channels supported by a 3 cm long ribbon. Filled and open markers correspond to 0 and 30 mT of applied field, respectively.

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/content/aip/journal/apl/97/16/10.1063/1.3503969
2010-10-21
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tunable elastic stiffness with microconfined magnetorheological domains at low magnetic field
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/16/10.1063/1.3503969
10.1063/1.3503969
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