Skin sensors temporary tattoos monitor for a week

The University of Tokyo's Graduate School of Engineering's research team created a temporary tattoo-style sensor that is comfortable to wear for up to a week. Super light and ultra thin layers are used by patients, athletes and anyone for continuous health monitoring as an alternative way of installing devices without the need for invasive procedures.

Tinuku Skin sensors temporary tattoos monitor for a week

The hypoallergenic design allows the sensor to last longer. Nano is made of electrodes including water-soluble polymers, polyvinyl alcohol (PVA) and gold coatings selected because it has been shown to be compatible with human skin such as pericarps in general.

The patch is placed on the skin and sprayed with water to dissolve the PVA and allow the golden frame to adhere seamlessly to the contours and pores. Air circulation will avoid skin irritation. Subjects wear for a week without experiencing problems and stretching the sensor prove device endurance.

"We managed to get rid of the discomfort, people did not even feel the existence of the device in their skin" said Takao Someya.

The researchers report to Nature Nanotechnology that ultrathin and light sensors have a thousand times thinner than a human hair. Similar applications of temporary tattoos in children and in accordance with the various textures of human skin on the back of a finger, while allowing air to enter through a small gap. Skin sensors temporary tattoos monitor for a week

Someya says gold has endurance and is compatible with biology, but can be replaced with aluminum to be more cost-effective. Twenty participants took a patch of nanomesh on the arm for seven days and did not report any inflammation.

Sensors detect touch, temperature, pressure, and read muscle electrical activity such as conventional gel electrodes. Someya hopes this sensor will monitor the patient's vital signals comfortably and athlete's physiological signals without impeding performance.

"We can see a lot of potential applications in the medical field, as well as sports and public welfare everywhere," Someya said.