1. pontiff
  2. Room Temperature?

Room Temperature?

By pontiff on March 20, 2008.

Dear Digg, no, this article and press release do not mean that Scientists Invent Room Temperature Superconducting Material. It means that scientists have put molecular silane under hundreds of giga-Pascals presures (for comparison, atmospheric pressure is 100 kilo-Pascals) at a temperature of around 20 Kelvin, and gotten it to superconduct. While this is certainly cool, it is not "room temperature" as far as I can tell.

One day I was driving down the road and listening to AM radio when Paul Harvey came on and did his schtick ("and now you know, the rest of the story.") At one point in the show, Harvey made a statement that physicists had recently discovered how to get superconductivity at room temperature. I almost drove off the road hearing this and ran home to see if it was true. Unfortunately it was not, and I will never, ever, forgive Paul Harvey for making me think this amazing discovery had been made. And now you know the rest of the...ah, whatever.

Tags
Physics
Science By Press Release

More like this

Looking for the Bacon Boson

I'm grading exam papers at the dining room table when Emmy trots in. "Hey, dude," she says. "Where do we keep the superconducting wire?" I'm not really paying attention, so I start to answer before I understand the question. "Hmm? Wire is in the basement, next to the--wait, what?"

Weaving Superconducting Magnets

Magnets are neverendingly awesome, and superconductors may be the ultimate in cool—they are, after all, literally extremely cold. And not just anyone has the tools to weave superconducting magnets with compressed metallic thread. It's a more essential skill than you might think.

March Meeting Quantum Computing Schedule

The APS March meeting is next week as 10000 physicists invade Portland, Oregon. I hope Powell's bookstore has stocked their science sections well!

...For Some Definition of Physical Reality

There's a press release dated a week or two ago from Leiden University headlined "Physical reality of string theory demonstrated," in an apparent bid to make Peter Woit'

I did a summer project in the Francis Bitter Magnet Lab, over on the east side of MIT, the better part of a decade ago. Scotch-taped to a door was a photograph of two men standing knee-deep in billowing clouds, working on some piece of laboratory equipment. The caption read, "Prof. Foner and assistant achieve room temperature superconductivity by filling room with liquid nitrogen."

The claim comes from extrapolating 5 data points in a Tc Vs Pressure graph. It looks like Tc increases rapidly in the 100-125 GPa region. Unfortunately, I can't imagine the sort of pressure control you would need to maintain superconductivity at liquid nitrogen temperatures, let alone room temperature.

This is the same joke like about NMR or D-wave quantum computer...