The team is already looking forward to the next version of the technology: digital cameras that imitate the compound eyes of shrimp, lobsters, moths and houseflies.
At the same time, their brains were scanned with positron emission technology (PET), using a radioactive compound that allowed the researchers to visualize where caffeine was going once it arrived in the brain.
At its event, Sharp shared more details of its "Igzo" technology - which stands for Indium Gallium Zinc Oxide, a compound material that is said to be more responsive to touch.