Scientists have found a way to print wearable sensors directly on the skin at room temperature.

According tomedia reports, flexible electronic technology for wearable sensor applications to provide some interesting possibilities. Wearable sensors can be made into film and sleeves similar to tattoos for monitoring all aspects of human health. Scientists at Pennsylvania State University have developed a safety device that can be printed directly on the skin to track information such as body temperature and blood oxygen levels, which will be removed once the work is done.

Scientists have found a way to print wearable sensors directly on the skin at room temperature.

The new printable sensor builds on the early work of the researchers, who developed flexible circuit boards for wearable sensors. The key to this process, however, is to bond some metal parts together at temperatures that the human body cannot afford well (300 degrees C).

This scorching sintering process prevented the team from printing flexible circuit boards directly on human skin, but now they may have found a way to solve the problem — the key is what scientists call the sintering aid layer, which acts as a buffer to allow the material to bind together at safer temperatures.

It is understood that this layer of formula consists of polyethylene alcohol paste and calcium carbonate, they can be found in peelable mask and eggshell, respectively. The effect of this layer is to smooth the skin surface and allow a very thin metal pattern to be printed directly on it at room temperature, which can then be set with a hair dryer.

According to the team, the flexible circuit maintains its electrochemical properties and can be adjusted to continuously record data such as temperature, humidity, blood oxygen and heart signals. Once the work is complete, the sensor can simply be flushed off with hot water. And according to the researchers, this flushing process does not damage the body’s skin, which is sensitive to the skin of people like the elderly, infants are particularly important.

As the equipment continues to improve, the team hopes it can be used to monitor the symptoms of COVID-19.