How do the elastomer spheres in the metafluid deform under pressure?

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Deformation of Elastomer Spheres in Metafluid Under Pressure

The elastomer spheres within the metafluid undergo a distinct deformation process when subjected to external pressure. These spheres, ranging from 50 to 500 microns in diameter, are filled with air and suspended in silicon oil. When pressure is applied to the fluid, these air-filled capsules collapse, altering their shape and subsequently modifying the overall characteristics of the metafluid.
Spherical Collapse Under Pressure

When the internal pressure within the liquid rises, the elastomer spheres are observed to collapse. This collapse results in the spheres transitioning from a full spherical shape to a half-sphere configuration. This change in form is a direct consequence of the applied external force overcoming the internal air pressure and the structural integrity of the elastomer shell.
Reversion to Spherical Shape

Upon the removal of the applied pressure, the elastomer spheres demonstrate a capacity to revert to their original form. The capsules return to their spherical shape once the external force is no longer acting upon them. This reversible deformation is a key property that allows the metafluid's characteristics to be dynamically adjusted.
Programmable Fluid Properties

The ability of the spheres to deform and recover their shape under varying pressure conditions allows for the "programming" of the metafluid's properties. By adjusting parameters such as the number, thickness, or size of these capsules within the silicon oil suspension, researchers can alter the fluid's viscosity and elasticity. This controlled manipulation of the fluid's behaviour opens up possibilities for advanced technological applications, particularly in fields like robotics where adaptable materials are essential.

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How do the elastomer spheres in the metafluid deform under pressure?

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