Superconductor breakthrough replicated twice on preliminary testing
Superconductor breakthrough replicated twice on preliminary testing
A tentative but less nebulous step toward superconductor-fueled electronics.
Big if true
How big kinda depends...
The two limits on superconductor performance are:
- How much current it can carry
- How much magnetic field it can withstand
It will soon go to National Labs to establish those parameters
How big kinda depends...
The two limits on superconductor performance are:
- How much current it can carry
- How much magnetic field it can withstand
It will soon go to National Labs to establish those parameters
So would this mean that cpus would not generate heat?
Would smartphone battery life skyrocket?
Can someone breakdown how this would affect computing?
According to the article fabrication seems to have a very low yield. That will generally make it difficult for consumer products.
I would generally assume first use would be in locations were super conductors are already used today. E. g. in MRI machines which would then not require cooling anymore and therefore could be more compact, quieter and consuming much less energy.
Other prime fields for super conductors are energy transportation from the energy producers to the consumers.
Application in electronics seems difficult for me as the material is not used stand alone there and therefore new fabrication processes and designs will be needed. After all it will not work to use this material to replace silicon transistors as our transistor designs are relying on the semiconductor nature of silicone and a superconductor cannot follow this by definition. Maybe the connections between transistors can be replaced, but I am not sure where most of the heat generation happens. If I remember my physics studies correctly there is also significant energy loss within the transistor and that would still mean that the cpu would heat up. This would be now especially critical as the temperature must not exceed the temperature where the material loses super conductivity as this would most likely lead to a fast melt down of the device.
A superconductor would completely change how we handle electricity. It’s like a cheat code almost. I’d say most of our current electric infrastructure only exists because of the limitations of our non-superconducting materials.
Keep in mind that superconductors have a critical current below which you have to be if you want to stay in the superconductive states. So for a superconductor to be useful for energy transport, this current has to not be tiny. I haven’t had the time to read their paper so I don’t know the value of the critical current. Also if for some reason the current suddenly goes beyond the critical current, the wire will heat suddenly, with possible damage…
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So would this mean that cpus would not generate heat?
Not quite. Charges undergoing acceleration and state transitions still generate EM radiation, and still lose energy. In a semiconductor, charges start moving, stop moving, and change direction all the time. So that form of energy loss & heat generation will continue.
In addition, the semiconductor itself is still a semiconductor, not a superconductor. To take advantage of the ability of a semiconductor to hold charges in specific states, there will be some heat losses.
But, a practical superconductor could be used to form all the interconnects in a PC board or the surface of a silicon chip device, providing an efficiency improvement.
At the moment, Andrew Cole on Twitter seems to be a good person to follow for breakdowns and thoughts: https://nitter.net/Andercot
No, computing (as in general computing) will barely be affected. Computing uses semiconductors, which this (AFAIK) isn't. Switching losses always occur unless you switch instantly, which is impossible. Most of the heat of cpus comes from there.
Specialized things like quantum computing are a different story.
What this superconductor could mean though: you could have a relatively thin cable from say, the Sahara to Europe, that can losslessly transfer energy. No losses whatsoever. So you can produce energy wherever energy is present, and use it where energy is required!
You can use superconductors to create Josephson junctions, which can be used for standard logic operations (but also useful in quantum computers). These junctions are much more efficient and much faster than transistors.
This particular superconductor will not be useful for transmitting power because the effect breaks down at very low current limits in this material, but it will be very useful for studying superconductors.
So contrary to what you said, this will in fact not be useful for power transmission, but could be useful for CPUs and GPUs, and could lead to computers that are hundreds or thousands of times faster and more efficient than what we have today.
To be fair this material may never see a practical use though.
This superconductor is a ceramic so not ductile at all. It also can only carry very small amps as a super conductor. It's possible this way of thinking about super conductors will yield better wires, but they wont be made from this exact material.
Well, almost no losses. No resistive losses. Should still lose some because of electromagnetic fields surrounding the cabling interacting with the environment.
I can’t speak to the superconducting potions of this comment, but the general computing information is mostly correct.
Switching losses are a result of capacitance in the circuit. These capacitances aren’t going anywhere in transistors made from semiconductors. Additionally, even when a transistor is on it has some resistance, which of course creates heat whenever a current moves through that transistor. Leakage current also generates waste heat.
I could see room temperature super conductors being useful as replacements for bus lines in a digital circuit, but this wouldn’t eliminate the heat in the circuit. Most of the heat is created in the transistor junctions, so the effect would be very minimal if even noticeable.
Still, with good superconductor, desing of the chips will be greatly affected. Not caring about removing the heat from the layers will open huge possibilities
In my unprofessional opinion: yes. Just imagine if your computer didn't produce heat any more.
This is amazing news
I hope they find a way to scale to production, but given how impactful it could be I'm certain there are a lot of people working like mad to do just that. Currently the only known way to make them is "shake n' bake" lol.
This has the potential to be a huge breakthrough!
Still waiting on that 5 sigma.
6 sigma or it didn't happen babe.