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Silicon Proves Its Mettle as Resistive Memory

Silicon oxide memristors could make resistive RAM more compatible with CMOS chip manufacturing

4 min read

29 May 2012—Seeking denser, faster alternatives to the flash memory in smartphones and digital cameras, the world’s largest memory chipmakers are turning to resistive RAM,  or RRAM. Unlike silicon-based flash, resistive memory is made with oxides of other metals that can reversibly change their resistances. But silicon isn’t ready to step aside just yet.

This month, a European research team reported a silicon oxide–based resistive memory in the Journal of Applied Physics. It’s the second such device reported: James Tour’s group at Rice University reported one in 2008 and again in the journal Nano Letters in August 2010; the group announced a transparent version of the memory this year at the American Chemical Society meeting in March.

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The Transistor at 75

The past, present, and future of the modern world’s most important invention

2 min read
A photo of a birthday cake with 75 written on it.
Lisa Sheehan

Seventy-five years is a long time. It’s so long that most of us don’t remember a time before the transistor, and long enough for many engineers to have devoted entire careers to its use and development. In honor of this most important of technological achievements, this issue’s package of articles explores the transistor’s historical journey and potential future.

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