Gold Nanosponges Lead to Better Headlights

Mar-02-16 A new adaptive headlight design from the team at Fraunhofer offers even more precise control with its array of 1000 separately controlled LED pixels.

The headlight system is made up of four LED chips, each with 256 pixels, which are in turn attached to the driver chip. Each pixel is sized at only 125 microns, and according to the team, establishing contact between the pixels and the driver chip was “not an easy task.”

To create connections that were both sturdy enough and ensured enough cooling of the chip, the team is pursuing two different techniques: a gold-tin alloy attached to the chip in a grid pattern, and a gold nanosponge able to compress and adapt to the surface area of the chip. As well as providing more control over light distribution, the new headlight is able to offer a higher energy efficiency than previous versions by only illuminating the required pixels.

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[GIZMAG.COM]
[FRAUNHOFER.DE]

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