Release date: 2017-06-16
Scientists have developed a new type of color-changing tattoo ink. It contains biosensors that respond to changes in the body, such as blood glucose levels and sodium concentrations. Scientists hope to turn the human skin surface into a "human-computer interaction display." Such technology may become an innovative way of health monitoring.
The project, called "DermalAbyss," was developed by MIT in collaboration with Harvard Medical School, which combines fluid interface and biotechnology. Currently, they have developed three different inks that vary in color with tissue fluids. The tissue fluid is filled between cells, accounting for about 16% of the body's body weight. 
Among them, the first ink can measure blood sugar concentration. As the blood sugar level rises, the ink changes from blue to brown. For people with diabetes, this blood sugar sensing tattoo makes life a lot easier, and they no longer need to rely on a needle blood test to monitor blood sugar levels. The second ink is able to detect the pH value - from powder to purple. The third ink is capable of detecting the sodium concentration - when the salt concentration is raised, it will be bright green under ultraviolet light. 
This type of ink can be used to continuously monitor body data. Whether you are a patient who needs to carefully monitor your diet, or a data madman who likes to record changes in your body, this type of sensory tattoo ink is extremely attractive. Even people with diabetes send emails to researchers saying they are willing to test the ink.
But so far, DermalAbyss is still in the proof of concept stage, and we can't know when it will become a real product. Before it is applied to the human body, it also needs to undergo rigorous testing at multiple stages - first animal testing, then human testing. Scientists need to understand what adverse reactions and allergies may be caused by ink. Currently, researchers have tested on pig skin.
In addition, researchers need to address an important question: how to ensure the accuracy of tattoo instructions as much as possible? For medical purposes, the color change interface must be as reliable as the blood test results. Obviously, scientists have not yet reached this step. Therefore, this ink has been on the market for a long time.
Source: Omelette Net
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