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October 13, 2020 Tuesday 10:53:56 AM IST

New Method for Embedding Wearable Electronics

Science Innovations

Scientists at Korea Advanced Institute of Science and Technology (KAIST) have developed a new technology, a highly flexible but sturdy wearable piezoelectric harvester, to embed electronic devices in fabric using simple hot pressing and tape casting. Wearable devices such as sensors, actuators, displays and energy harvesters are being used now but despite its advantages it involves high costs and complex fabrication processes. It also lacks durability. The KAIST innovation will enable the direct application of a device into general garments using hot pressing just as graphic patches can be attached to garments using a heat press.In particular, when the polymer film is hot pressed onto a fabric below its crystallization temperature, it transforms into an amorphous state. In this state, it compactly attaches to the concave surface of the fabric and infiltrates into the gaps between the transverse wefts and longitudinal warps. These features result in high interfacial adhesion strength.


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