Hamid Ohadi
Hamid Ohadi
@polariton.bsky.social
Reader at University of St Andrews. Physics, polaritons, light-matter interactions. Views my own.

New paper: We combine computation and synthesis to design and discover intercalated layered hybrid perovskites with tunable structures and optoelectronic properties.
With Julia Payne | Grateful to @leverhulme.ac.uk for funding. @physastrostand.bsky.social
#2DPerovskites
Advancing intercalation strategies in layered hybrid perovskites by bringing together synthesis and simulations - Nature Communications
A parallel experimental and computational approach was used to predict and prepare intercalated, layered hybrid perovskites, highlighting the breadth and flexibility of intercalation.
www.nature.com
July 3, 2025 at 11:11 AM
Reposted by Hamid Ohadi
New tool to identify ‘toxic’ green books

Developed by @physastrostand.bsky.social and the University of St Andrews Libraries and Museum, the new device is transforming how cultural heritage institutions identify toxic pigments in historic books.

Read more 👇

ow.ly/WAil50Wflrf

#EverToExcel
June 24, 2025 at 10:43 AM
Are you interested in Rydberg physics, but in solid state? Come and join my brilliant colleague’s group in Durham, Prof Matthew Jones for a postdoc!

@durhamqlm.bsky.social
Postdoctoral Research Associate in Quantum Light and Matter
Click the link provided to see the complete job description.
tinyurl.com
June 10, 2025 at 12:34 PM
New paper: a novel microcavity fabrication technique using birefringent 2D perovskites, enabling asymmetric topological polariton states without geometric structuring.
With Pavlos Savvidis | Grateful to @leverhulme.ac.uk for funding.
#Polaritons #TopologicalPhotonics #2DPerovskites
Unveiling asymmetric topological photonic states in anisotropic 2D perovskite microcavities - Light: Science & Applications
Unconventional topological states emerge in anisotropic perovskite microcavities via strong photonic Rashba-Dresselhaus coupling, enabling synthetic gauge fields and non-zero Berry curvature for advan...
www.nature.com
June 3, 2025 at 7:23 AM
Reposted by Hamid Ohadi
Presidential budget is out. Here's NSF. Biggest cut, by amount, is $1 billion, or 66.8%, from MPS (Physics & Math directorate). nsf-gov-resources.nsf.gov/files/00-NSF...
May 30, 2025 at 8:20 PM
😉
Have you got a PhD offer from a country that may revoke your visa? Let's have a chat 😉
May 29, 2025 at 10:49 AM
ChatGPT’s response to my grant rejection frustration: “allow yourself space to feel the disappointment properly. You don’t need to move straight to silver linings. This is part of the emotional cost of doing high-risk, high-reward research—and it’s ok to feel knocked by it.” pretty good I thought.
May 22, 2025 at 9:43 PM
Reposted by Hamid Ohadi
PhD Timeline xkcd.com/3081
April 25, 2025 at 3:32 PM
I highly recommend listening to Sean Carrol’s @seanmcarroll.bsky.social podcast with Francoise Collet on deep learning and intelligence if you’d like to understand why LLM has nothing to do with intelligence, and why it never reach AGI. podcasts.apple.com/gb/podcast/s...
François Chollet on Deep Learning and the Meaning of Intelligence
Podcast Episode · Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas · 24/06/2024 · 1h 42m
podcasts.apple.com
April 5, 2025 at 6:28 AM
We have the stable genius’s formula: max(trade deficit / total export / 2, 10)

www.theverge.com/news/642620/...
Trump’s new tariff math looks a lot like ChatGPT’s
ChatGPT may be the White House’s latest economic advisor.
www.theverge.com
April 4, 2025 at 9:21 PM
Should we give Google another 21 years to add the option of “sort by number of citations” in Google Scholar?
March 28, 2025 at 12:25 PM
Reposted by Hamid Ohadi
I had made Microsoft Quantum aware of issues before publication of this latest Nature paper (which uses it tune up their devices).

Since they seem to not care, I have make these issues public.

In short: The topological gap protocol and all claims based on it are flawed.

arxiv.org/abs/2502.19560
Comment on "InAs-Al hybrid devices passing the topological gap protocol", Microsoft Quantum, Phys. Rev. B 107, 245423 (2023)
The topological gap protocol (TGP) is presented as "a series of stringent experimental tests" for the presence of topological superconductivity and associated Majorana bound states. Here, we show that...
arxiv.org
February 28, 2025 at 6:32 AM