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Stretchable Sensor Gives Robots, VR a Human Touch

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The stretchable sensor.

Cornell University researchers have developed a stretchable fiber-optic sensor.

Credit: Cornell Chronicle

Cornell University researchers have developed a fiber-optic sensor that, when integrated with low-cost light-emitting diodes (LEDs) and dyes, results in a stretchable skin that senses deformations like pressure, bending, and strain.

The sensor employs a stretchable lightguide for multimodal sensing (SLIMS) featuring transparent and dye-impregnated polyurethane elastomeric cores linked to an LED; each core is mated to a red-green-blue sensor chip to detect geometric changes in the optical path of light.

The dyes function as spatial encoders.

The sensor is coupled with a mathematical model that can separate distinct deformations and pinpoint their precise locations and magnitudes.

The researchers engineered a glove with a SLIMS sensor on each finger, as well as a battery and Bluetooth, that can transmit basic data in order to reconstruct its movements and deformations in real time.

From Cornell Chronicle
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Abstracts Copyright © 2020 SmithBucklin, Washington, DC, USA


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