Brandon O’Connell retweetledi
Brandon O’Connell
1.2K posts

Brandon O’Connell
@BrandonOCo
27, Research Associate - Structural Dynamics, Data Analysis & Machine Learning @sheffielduni, views all mine, (he/him)
Sheffield, England Katılım Aralık 2010
948 Takip Edilen351 Takipçiler
Brandon O’Connell retweetledi

@BBCNewsnight @MartinSLewis @MartinSLewis so thank you for speaking out on this issue! It has so many problems and I think we’ve only scratched the surface! (3)
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@BBCNewsnight @MartinSLewis I completed my degree 2015-2020 and now my debt is ~£85000. I did an engineering PhD 2020-2024, so didn’t earn enough to repay. I now work in research at a university and barely pay anything off the loan each month given my salary. (1)
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Brandon O’Connell retweetledi

“I do not think this is a moral thing for you to do...”
Martin Lewis shares his message to Chancellor Rachel Reeves on her decision to freeze the threshold at which graduates begin to repay their student loans.
#Newsnight
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@BBCNewsnight @MartinSLewis @MartinSLewis I find it crazy that, like myself and others, researchers in academia are not paid enough to pay off the interest, but also that as someone who is putting back into the HE system there isn’t some relief for our loans. Same goes for those in the NHS too! (2) …
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#MartinLewis Thank you for standing up for students! Another major issue is the PhD stipend in the Uk. Which, if adjusted for tax, works out less than the current living wage! How can the government talk about wanting quality research but pay its future researchers so little!!
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Brandon O’Connell retweetledi

My job as a research fellow at one of the world's best universities (a requirement of which is a doctorate) pays less than this and so, on this definition, I am an unskilled worker who wouldn't be allowed into the country. This system is utterly ridiculous..
UK Prime Minister@10DowningStreet
We’re increasing the minimum earnings threshold for skilled workers by 48% to £38,700, encouraging businesses to look to British talent first and invest in their workforce.
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@UKRI_News @EPSRC @GOVUK @LiviWageUK following the announced rise in Living Wage, as a Doctoral researcher working in a top UK institution and studying for a PhD in Engineering, the PhD stipend now works out to be ~£2500 less per year than the national living wage 1/2
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@SheffCouncil Over the last few days my partner has, on multiple occasions, attempted to phone your council tax office to amend our circumstances, as apparently it is not possible, or at least not clear to make such changes, using your online system. 1/2
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Brandon O’Connell retweetledi

National Lab (LBNL) results support LK-99 as a room-temperature ambient-pressure superconductor.
Simulations published 1 hour ago on arxiv support LK-99 as the holy grail of modern material science and applied physics.
(arxiv.org/abs/2307.16892)
Here's the plain-english explanation:
- The simulations modeled what the original Korean authors proposed was happening to their material - where copper atoms were percolating into a crystal structure and replacing lead atoms, causing the crystal to strain slightly and contract by 0.5%. This unique structure was proposed to allow this amazing property.
- @sineatrix from Lawrence Berkeley National Lab simulated this using heavy-duty compute power from the Department of Energy, and looked to see what would happen to the 'electronic structure' of this material, meaning, what are the available conduction pathways in the material.
- It turns out that there are conduction pathways for electrons that are in just the right conditions and places that would enable them to 'superconduct'. More specifically, they were close to the 'Fermi Surface' which is like the sea-level of electrical energy, as in '0 ft above sea-level.' It's believed currently that the more conduction pathways close to the Fermi surface, the higher the temperature you can superconduct at (An analogy might be how its easier for planes to fly close to the surface of the ocean due to the 'ground effect' that gives them more lift.)
This plot in particular shows the 'bands', or electron pathways, crossing above and below the Fermi surface.
- Lastly, these interesting conduction pathways only form when the copper atom percolates into the less likely location in the crystal lattice, or the 'higher energy' binding site. This means the material would be difficult to synthesize since only a small fraction of crystal gets its copper in just the right location.
This is insanely bullish for humanity.

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Brandon O’Connell retweetledi
Brandon O’Connell retweetledi

Sheffield Wednesday pulled off the greatest play-off comeback in English Football League history. bbc.in/42QBrtz
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Brandon O’Connell retweetledi

A visual representation of Sheffield Wednesday being top of the league, only to bottle the play-offs
Pepe Meme@pepe_fgm
One of the unluckiest things I've ever seen.
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