A team of researchers from Penn State University has created an innovative solution to the tedious task of checking a baby’s diaper for a change. These smart diapers feature built-in sensors that can detect and alert parents when it is time for a diaper change.

These diapers are designed with pre-treated paper containing sodium chloride and a circuit board outline. The outline is traced with graphite, which is connected to a small lithium battery. As soon as the baby urinates or excretes, the graphite reacts with the liquid and sodium chloride. As a result, electrons flow to the graphite and trigger a sensor, notifying the parents of the diaper’s condition.

Moreover, these smart diapers can also provide information about the moisture level, enabling parents to determine when to change the diaper. This technology simplifies the process of monitoring a baby’s diaper needs and saves parents time and effort.