Kara Manke

Duke University

A new sensor made of an alternating array of printed light-emitting diodes and photodetectors can detect blood-oxygen levels anywhere in the body. The sensor shines red and infrared light into the skin and detects the ratio of light that is reflected back.

Sensor Maps Blood-Oxygen

Injuries can't heal without a constant influx of blood's key ingredient.

Duke University researchers have developed a new 'spray-on' digital memory (upper left) that could be used to build programmable electronic devices on flexible materials like paper, plastic or fabric. To demonstrate a simple application of their device, they used their memory to program different patterns of four LED lights in a simple circuit.

Spray-On Memory for Digital Storage

Digital storage devices may soon be everywhere, even on our groceries, pill bottles and even clothing.