Researchers in Ireland have developed new micro LEDs which can emit light for a long, long time from a single charge. We’re talking almost a human lifetime here.
Granted, the micro LEDs are much smaller than conventional ones at only 15 microns across (compared to 300 microns), but they could be combined in arrays to compete with ordinary LEDs. Because they are so small, the micro LEDs require only a few billionths of an amp to operate. One of the researchers came up with the 80 year figure by using the amount of power stored in a coin-size battery.
These micro LEDs are also more efficient at turning the power put into them into light, meaning that they produce less heat.
The current plan is to market the device as an alternative to lasers. Some commercial applications are also possible such as inserting the micro LEDs into shoes or tickets to prevent counterfeiting.
It looks like LEDs will be providing our light in the future, and this is yet another step in that direction. Hopefully we’ll see some interesting creations putting these miniature lights to use.