“Slim as a hair, powerful as 100 LEDs”: the advantages of this technology have the allure of a slogan. “Currently, half the consumption of energy in laptops is connected to the screen and particularly ...

[Peter] has finished up his fiber optic microscope light source. When we last visited [Peter] he created a dimmer circuit for a 10 watt LED. That LED driver has now found its final home in [Peter’s] ...

Everyone loves LED matrices, and even if you can’t find what you like commercially, it’s pretty easy to make just what you want. Need it big? No problem; just order a big PCB and some WS2812s. Need ...

Scientists have, for the firsts time, been able to make a practical optical fiber with a silicon core. Scientists at Clemson University for the first time have been able to make a practical optical ...

The RLT technology greatly improves brightness to LEDs with full red, green, blue and white color capability. Using a 4-color LED package allows the light output to be digitally control and produce ...

Many Ars readers love to argue the details of different computer architectures. Cache implementations, pipelines, and other minutiae are all put under the microscope and declared wanting by someone ...

The circuit in Figure 1 allows you to verify fiber-optic strands, especially in cases in which a link goes through several patch panels. It uses two high-intensity LEDs that you can see at the far end ...

It seems graphene, the single layer of carbon atoms that can supercharge computer chips, optical circuits, lithium-ion batteries, and solar power generation, might have a competitor: a rare earth ...