Doctoral student Vinay Pagay holds one of the chips
One card can reportedly last outdoors for at least a few years, although freezing temperatures may cause it break
Whether you're growing wine grapes or mixing cement, there are some situations in which it's vitally important to monitor moisture content. Normally water sensors are used, although these can be both large and expensive. Now, however, a team from Cornell University has created a water-sensing silicon chip that's not only tiny, but is also reportedly "a hundred times more sensitive than current devices." What's more, the chips might be possible to mass-produce for just $5 a pop.
Other Images from this Gallery