Scientists in South Korea have created new "e-tattoos" that can track health issues

According to South Korean experts, silvery butterflies or other designs etched on the skin with this "electronic tattoo ink" comprised of liquid metal and carbon nanotubes can assist monitor heart rates and other crucial health indications.

The technology's developers from the Korea Advanced Institute of Science and Technology (KAIST) acknowledge that it is still in its infancy

They do, however, believe that in the future, medical professionals and patients will have access to a personalized, non-intrusive means to monitor their health.

By establishing an electric circuit on the skin, the ink efficiently operates. It may be connected to sensors that analyze perspiration, electrocardiogram (ECG) devices that track heart activity, and warmers that can be used in physiotherapy.

"We may put it directly to the skin in contrast to earlier devices (e-tattoos), which are patch type. It's significantly more pleasant for the user, according to Steve Park, a professor of materials science and engineering at KAIST and team leader together with PhD candidate Lee Gun-hee.

Gallium is a soft, silvery metal that is also utilized in semiconductors and in thermometers as a non-toxic replacement for mercury by the researchers to create the ink.

Carbon nanotubes with platinum decorations are durable and aid with electrical conductivity.

It is thought to be biocompatible, according to Park, which means it won't hurt live tissue.

When it is put to the skin, the tattoo remains after vigorous rubbing, which is impossible with merely liquid metal, according to Park.

He stated that the ink can be removed with washing and dries on the skin in less than 10 seconds.

The fact that wire is still needed to gather data, however, limits the capabilities of the existing technology, according to Park.

We intend to eventually link a wireless chip to this ink so that we may communicate or transmit signals back and forth between our bodies and an outside device, he added.