The skin is the largest organ in the human body, functioning as an external covering, regulating body temperature, nutrient reserve and natural barrier against microorganisms, besides having the nerve endings responsible for different sensations, among other functions.

Therefore, by presenting such a large area, it is no wonder that researchers are so interested in our skin. Check out some projects aimed at this body and that are in full development:

Stem Cell Pistol

(Image source: Reproduction / The Star)

According to a report published by The Star newspaper, a kind of pistol developed by researchers at the University of Pittsburgh's McGowan Institute for Regenerative Medicine is being used in patients who have suffered severe second-degree burns.

The equipment acts as a kind of spray, applying a solution of stem cells - from the patient himself - and water over the affected area. The treatment lasts approximately 90 minutes and, according to clinical tests, the regenerative process is much faster than traditional treatments.

Body acoustics and touchscreen skin

If you think the keyboard and touchscreen displays are too limited, be aware that you're not the only one. In a partnership with Carnegie Mellon University students, Microsoft is working on a project called Skinput, a technology that transforms your skin into a portable screen.

For this, the researchers use a kind of sensor clamp and a small projector. The equipment is attached to the arm and is able to pick up the sound frequency obtained when we touch our skin. The signals are then translated into commands, allowing other handsets such as phones, audio devices or games, for example, to be controlled by simply touching the skin itself.

Programmable Tattoos

(Image source: Playback / Think Geek)

What do you think about having a tattoo that can be modified - even erased - depending on your mood or occasion? This technology does not exist yet, but many people would certainly be interested. After all, how many people do you know who have regretted any tattooing they did?

The idea came from a joke from the folks at Think Geek who explained that programmable tattoos would work through subcutaneous implants that turn the skin into a huge canvas. The implant could be placed anywhere on the body, and software included in the kit would be responsible for showing the tattoo you want.

Sources: Chris Harrison, Think Geek, Tech Blog and The Star