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Meta-skin could lead to invisibility cloak

Metaskininvisibility 3

Radar suppressing meta-skin is bringing us one step closer to actual invisibility cloaks, Via Gizmag

Engineers at Iowa State University may have gotten one step closer to the ability to make objects invisible with the development of what they are calling a flexible, stretchable and tunable meta-skin. They have shown that objects wrapped in the meta-skin can suppress radar detection, and they are hoping to advance the material to eventually make objects undetectable to both visible and infrared light.

The meta-skin is so named because it is made of metamaterials (composites not found in nature) that can manipulate electromagnetic waves. The metaskin created at Iowa State is made with rows of what are referred to as electric split ring resonators that are embedded in layers of silicone sheets.

The resonaters are rings that are each about 2.5 mm (0.1 inch) in radius and about 0.5 mm (0.02 inches) thick. They are filled with a commercial metal alloy called galinstan that is liquid at room temperature and is frequently used to replace mercury due to its lower toxicity.

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