New lithium-sulfur battery could let phones last five days between charges

Lithium-sulfur batteries have been in the news for years, but a new design might be worth your notice. Monash University researchers have crafted what they claim is the most efficient lithium-sulfur battery to date. An appropriately-sized unit report...

Fraunhofer develops extra-small 1Gbps infrared transceiver, recalls our PDA glory days

Fraunhofer develops extrasmall 1Gbps infrared transceiver, recalls our PDA glory days

Our 1997-era selves would die with envy right about now. Fraunhofer has developed a new generation of infrared transceiver that can transfer data at 1Gbps, or well above anything that our vintage PDAs could manage. While the speed is nothing new by itself -- we saw such rates in 2010 Penn State experiments -- it's the size that makes the difference. The laser diode and processing are efficient enough to fit into a small module whose transceiver is as large as a "child's fingernail." In theory, the advancement makes infrared once more viable for mobile device syncing, with room to grow: even the current technology can scale to 3Gbps, lead researcher Frank Deicke says, and it might jump to 10Gbps with enough work. Along with the usual refinements, most of the challenge in getting production hardware rests in persuading the Infrared Data Association to adopt Deicke's work as a standard. If that ever comes to pass, we may just break out our PalmPilot's infrared adapter to try it for old time's sake.

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Fraunhofer develops extra-small 1Gbps infrared transceiver, recalls our PDA glory days originally appeared on Engadget on Fri, 05 Oct 2012 01:32:00 EDT. Please see our terms for use of feeds.

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Fraunhofer black silicon could catch more energy from infrared light, go green with sulfur

Fraunhofer black silicon could catch more energy from infrared light, go green with sulfur

Generating solar power from the infrared spectrum, or even nearby frequencies, has proven difficult in spite of a quarter of the Sun's energy passing through those wavelengths. The Fraunhofer Institute for Telecommunications may have jumped that hurdle to efficiency through sulfur -- one of the very materials that solar energy often helps eliminate. By irradiating ordinary silicon through femtosecond-level laser pulses within a sulfuric atmosphere, the technique melds sulfur with silicon and makes it easier for infrared light electrons to build into the frenzy needed for conducting electricity. The black-tinted silicon that results from the process is still in the early stages and needs improvements to automation and refinement to become a real product, but there's every intention of making that happen: Fraunhofer plans a spinoff to market finished laser systems for solar cell builders who want their own black silicon. If all goes well, the darker shade of solar panels could lead to a brighter future for clean energy.

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Fraunhofer black silicon could catch more energy from infrared light, go green with sulfur originally appeared on Engadget on Thu, 04 Oct 2012 05:32:00 EDT. Please see our terms for use of feeds.

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