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The Tech Elon Has Been Waiting For (EP 51)

The Tech Elon Has Been Waiting For (EP 51)

From First Principles vor 3 Monaten

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1:44:28

What happens when electronics can operate at temperatures hot
enough to melt aluminum? In this deep-dive episode, Lester Nare and
Krishna Choudhary examine a new high-temperature memory device
developed by researchers at USC, the Air Force Research Laboratory,
Kumamoto University, and their collaborators. Published in Science,
the experimental memristor combines tungsten, hafnium oxide, and
graphene. It operated reliably at 700°C—roughly 1,300°F—retained
data for more than 50 hours, and survived more than one billion
switching cycles. We begin by explaining why conventional
electronics and flash memory fail when temperatures rise. From
deep-earth drilling and hypersonic aircraft to nuclear systems and
the surface of Venus, many environments where intelligent
electronics would be useful remain inaccessible to today’s
hardware. Krishna then builds the memristor from first principles.
We explore the history of the “missing” fourth circuit element, how
oxygen vacancies create low- and high-resistance memory states, why
conventional platinum electrodes fail under extreme heat, and how
graphene prevents tungsten atoms from diffusing through the device.
Finally, we examine the implications for artificial intelligence.
Memristors can potentially store neural-network weights and perform
matrix multiplication in the same physical location, reducing the
energy wasted moving information between processors and memory.
Could that combination of heat tolerance and energy efficiency make
AI data centers in space more practical? Lester and Krishna work
through thermal radiation, radiator size, power consumption,
radiation resilience, and the considerable engineering challenges
that remain. Support the showDonate: FFPod.com/donateFollow: @FFPod
on X / Instagram / TikTok / Facebook Research and Show Notes
High-temperature memristors enabled by interfacial engineering USC:
A memory device that operates at 700°C The development of
carbon-neutral data centres in space NASA Venus facts