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You can print new wearables directly on your skin

You can print new wearables directly on your skin

 


Temporary tattoo

A team of scientists has developed a new wearable sensor that can be manufactured directly on someone’s skin without burning the recipient in the process.

The production of wearable circuits (flexible sensors or devices that fit and adhere to the skin) usually requires a large amount of heat.By finding a way to manufacture them at room temperature, as described In the published study In the journal ACS Applied Materials & InterfacesScientists at Pennsylvania State University behind this technology want to develop new medical sensors that are better suited to individual patients.

It’s cold, it’s cold …

The process of sintering or joining the constituent metals Flexible circuit, Usually occurs at 572 degrees Fahrenheit.

“Obviously, the surface of the skin cannot withstand such high temperatures,” said Hanyu “Larry” Chen, an engineer and lead author at Pennsylvania State University. Said in a press release.. “To avoid this limitation, we have proposed a sintering aid layer, which can help the materials to sinter together at lower temperatures without damaging the skin. “

Chen and his team were able to gradually reduce the heat of sintering to room temperature by mixing compounds such as polyvinyl alcohol paste, which is the main component of skin care face masks.

Peel away

The result is a medical sensor that is specially tailored to the human body and can be easily rinsed with warm water.

“Removing it doesn’t damage the device, so it can be recycled,” Chen said. “And, importantly, removing it does not damage the skin. This is especially important for people with sensitive skin, such as the elderly and babies. This device is extra for users and the environment. It’s convenient without putting a heavy burden. “

read more: Engineers print wearable sensors directly on the skin without the use of heat [Penn State]

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