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Aron ⇋ e⁻

@aronwalsh.github.io
1.5K followers 846 following 251 posts

Virtual Chemist; Liúdramán; Personal Opinions

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Aron ⇋ e⁻ @aronwalsh.github.io · 05/04/2026
This robot must have some stories to tell #Londonmaxxing
A discarded robot in Hackney
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Jarvist Moore Frost @jarvist.bsky.social · 03/04/2026
A timely and eloquent essay, well worth reading by anyone in science.
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Geoff Hutchison @geoffhutchison.net · 02/04/2026
If you've got something really big - 100,000 atoms, a million atoms? I'd really like to try it out.
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Johann Brehmer @johannbrehmer.bsky.social · 25/03/2026
Come work with me on generative models for materials at CuspAI! We have: - a fantastic team lead by @wellingmax.bsky.social and @aronwalsh.github.io - important problems and fun methods - offices in beautiful Amsterdam, Cambridge, London, Berlin jobs.ashbyhq.com/cuspai/b8108...
jobs.ashbyhq.com
Applied ML Researcher (Generative Models)
Due to growth, we are seeking an experienced Applied ML Researcher (Generative Models)* to join our growing team and build SOTA generative models to design new materials at CuspAI.
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Aron ⇋ e⁻ @aronwalsh.github.io · 19/03/2026
Great! I have tickets for tomorrow
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Rocío Mercado Oropeza @rociomer.bsky.social · 12/03/2026
Finally made it to #CCSC2026! Amazing talks this morning (day 3) from @vlderinger.bsky.social @mahrossi.bsky.social @molecularxtal.bsky.social 🤩 great to be here
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Aron ⇋ e⁻ @aronwalsh.github.io · 14/02/2026
Funnily, that’s the year I took my first DFT class!
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Aron ⇋ e⁻ @aronwalsh.github.io · 13/02/2026
Apple offer an engraving when you buy online. It was all I could come up with…
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Aron ⇋ e⁻ @aronwalsh.github.io · 13/02/2026
And a little 🦞 too!
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Aron ⇋ e⁻ @aronwalsh.github.io · 13/02/2026
#CompChem for life
An image of an Apple Pencil with “B3LYP/6-31G” engraved
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Aron ⇋ e⁻ @aronwalsh.github.io · 13/02/2026
I can’t read the article, but “Don’t Trust the Rankings” sounds like a safe bet
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Nessa Carson @supersciencegrl.co.uk · 29/01/2026
The Next Generation of AI Chemists: a programme for penultimate-year UK-based undergrads from underrepresented backgrounds (women, gender minorities, LGBTQ+, ethnic minority, disability, carers, low socioeconomic background, first in family to uni). #chemsky aichemy.ac.uk/next-generat...
aichemy.ac.uk
Next Generation of AI Chemists Programme – aichemy
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Nature Reviews Methods Primers @natrevmethodsprimers.nature.com · 23/01/2026
Day 🔟 of the NRMP 5th Anniversary Highlights 🧁 Last, but not least, we chatted with @aronwalsh.github.io to learn more about the trends, opportunities, and challenges in using #AI for material design. 🌟 www.nature.com/articles/s43...
nature.com
Materials design for the future with AI assistance - Nature Reviews Methods Primers
Advancements in artificial intelligence and machine learning are reshaping scientific research, with notable benefits for materials design and modelling. We spoke with Aron Walsh, Professor in Materia...
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Seán Kavanagh @kavanaghsean.bsky.social · 21/01/2026
Defect simulations are notoriously sensitive to the many choices required 👨‍💻📊 In this Perspective, we highlight best practices in calculating 𝘢𝘯𝘥 𝘳𝘦𝘱𝘰𝘳𝘵𝘪𝘯𝘨 defect properties, hoping to establish guidelines for robust, transparent and reproducible defect simulations 🌟 www.nature.com/articles/s41...
nature.com
Guidelines for robust and reproducible point defect simulations in crystals - Nature Reviews Materials
Point defects critically influence material properties and require accurate computational modelling for reliable predictions. This Perspective outlines best practices for defect simulations using supe...
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FX Coudert @nanoporous.net · 09/01/2026
So happy, new chalk drawing in my lecture room this morning! 🤩 Thanks www.instagram.com/lestableauxd...
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John F Wu @jwuphysics.bsky.social · 02/01/2026
"Now What?" by John J Hopfield is a beautiful read for researchers at all career stages, and especially so for those who wish not to simply solve problems, but rather identify and solve a PROBLEM -- a kind of the deepest question. pni.princeton.edu/sites/g/file...
pni.princeton.edu
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Aron ⇋ e⁻ @aronwalsh.github.io · 29/12/2025
A winter refresh in Porto #BraggYourPattern
Photograph of a tile in a Porto church
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Aron ⇋ e⁻ @aronwalsh.github.io · 15/12/2025
Big congratulations! There are great people at Ewha and across the road at Yonsei. A wonderful part of the world to live (I spent a sabbatical there a few years ago), and the density of delicious restaurants in Sinchon is amazing.
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Johann Brehmer @johannbrehmer.bsky.social · 15/12/2025
Come work with us at @cuspai.bsky.social in the generative model team! Excited about flow / diffusion models and chemistry? Looking for impact? jobs.ashbyhq.com/cuspai/b8108... Join a great team lead by @wellingmax.bsky.social and Aron Walsh, work in Amsterdam / Cambridge / London / Berlin. 1/2
jobs.ashbyhq.com
Applied ML Researcher (Generative Models)
Due to growth, we are seeking an experienced Applied ML Researcher (Generative Models)* to join our growing team and build SOTA generative models to design new materials at CuspAI.
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Aron ⇋ e⁻ @aronwalsh.github.io · 01/12/2025
The appropriate Dublin expression is “I’m scarlet”. The YouTube algorithm is a thing of mystery
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Aron ⇋ e⁻ @aronwalsh.github.io · 22/11/2025
Only four decades late to the party, but The Sugarcubes are great. Soundtrack for an afternoon of writing, while watching the rain pour outside www.youtube.com/watch?v=vz9W...
youtube.com
The Sugarcubes - Motorcrash
YouTube video by björk
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Aron ⇋ e⁻ @aronwalsh.github.io · 22/11/2025
How could you not love #crystallography? An approximation of the incommensurate structure of Y⅓TaO₃ #ChemSky arxiv.org/pdf/2511.01241
A large crystal structure model of Y1/3TaO3 in a 12x12x2 expansion
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Jan Rosenow @janrosenow.bsky.social · 21/11/2025
Solar capacity is expected to triple based on new projects in the pipeline. Total global solar capacity, including all projects in construction and planned, is expected to reach almost 3 terawatts, with 80% concentrated in just 15 countries. Data @globalenergymon.bsky.social
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Aron ⇋ e⁻ @aronwalsh.github.io · 12/11/2025
"Your invitation to review for..." x n, where n is a number that's larger than you expect #ChemSky
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Aron ⇋ e⁻ @aronwalsh.github.io · 12/11/2025
"We have successfully received your letter of recommendation" x n, where n is a number that's larger than you expect #ChemSky
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Nature @nature.com · 12/11/2025
Computer scientist Yoshua Bengio has become the first person to have their work cited more than one million times on the search engine Google Scholar go.nature.com/4oywvUV
go.nature.com
‘Godfather of AI’ becomes first person to hit one million citations
The milestone makes machine-learning trailblazer Yoshua Bengio the most cited researcher on Google Scholar.
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Aron ⇋ e⁻ @aronwalsh.github.io · 09/11/2025
If I had time to learn another language, it would be rust-lang.org
rust-lang.org
Rust Programming Language
A language empowering everyone to build reliable and efficient software.
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Sam Blau @samblau.bsky.social · 04/11/2025
I'm hiring postdocs @berkeleylab.lbl.gov to drive cutting-edge research involving MLIPs, high-throughput workflows, chemical reaction networks, generative models, and open-source software dev. Full position description + application here: forms.gle/zePBZDmciXez... #Chempostdoc #AI4Science
forms.gle
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Aron ⇋ e⁻ @aronwalsh.github.io · 03/11/2025
Very nice! I read this first as "4D" and was hoping for some superspace symmetry, but "4d" is okay too
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Kasper S. Pedersen @kasperspedersen.bsky.social · 03/11/2025
👋New preprint: "Interplay of Redox Non-Innocence and Symmetry Breaking in a 4d Coordination Framework" 🧪We’ve made Mo(pyz)₂I₂, the 4d cousin of the Cr(pyz)₂X₂ family — with redox-active ligands, symmetry breaking, semiconducting transport, and very strong magnetic interactions. 🔗👇
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Dare Obasanjo @carnage4life.bsky.social · 01/11/2025
arXiv will no longer accept review articles and position papers unless they have been accepted at a journal or a conference and complete successful peer review. This is due to being overwhelmed by a hundreds of AI generated papers a month. Yet another open submission process killed by LLMs.
blog.arxiv.org
Attention Authors: Updated Practice for Review Articles and Position Papers in arXiv CS Category – arXiv blog
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Prof Chris Jackson @seismatters.bsky.social · 29/10/2025
Nobody makes enemies by finishing their talk early…
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Aron ⇋ e⁻ @aronwalsh.github.io · 30/10/2025
The late Mike Coey wrote a nice piece on related effects www.nature.com/articles/s41...
nature.com
Magnetism in d0 oxides - Nature Materials
Oxides of non-magnetic cations exhibit elusive signs of weak temperature-independent ferromagnetism. The effect is associated with surface defects, but it defies conventional explanation. Possible hyp...
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Aron ⇋ e⁻ @aronwalsh.github.io · 30/10/2025
I am not sure how many solid-state chemists are lurking here, but I bet 10p that CaSnO3 is not magnetic (with or without CO2) pubs.rsc.org/en/Content/A...
pubs.rsc.org
Supercritical CO2-modulated phase transition in CaSnO3 from orthorhombic to cubic symmetry for room-temperature ferromagnetism
The advancement of nanotechnology has enabled magnetic nanomaterials to exhibit remarkable potential and application value in medicine, transportation, information storage, and spintronics owing to th...
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Nadine, Hunter of Rocks @nadwgab.bsky.social · 26/10/2025
299 of #365Minerals 🧪⚒️ Spherocobaltite: - A carbonate mineral - Found in hydrothermal deposits containing cobalt - Named for its spherical shape and cobalt composition #minerals
Botryoidal aggregates of bright pink spherocobaltite. From the Democratic Republic of the Congo.

Specimen on display in the Natural History Museum, London.
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Johannes Gierschner @gierschner.bsky.social · 25/10/2025
🤨No & No again! 👉 "Stale Citations" are an integral part of science: to give credit to crucial works of the past, avoiding 'reinventions', being a plague in research, e.g. in #chemsky #pisky Your biased AI Tool to keep "research fresh" is a tombstone of science. Spooky indeed 😱 #researchintegrity
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Janine George @molecularxtal.bsky.social · 25/10/2025
So much software reuse is untracked as people cite the software in the SI or because there are upper limits to citations. 🙃 I have never understood this.
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Aron ⇋ e⁻ @aronwalsh.github.io · 25/10/2025
Imagine if Alan Turing had access to Claude Code #CompChem
Photograph of 1940s code written by Alan Turing for the Mark 1 computer at the University of Manchester
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Marcel Swart @marcelswart.bsky.social · 25/10/2025
Axel Becke, one of the big names in DFT development over the past 40 years, has passed away #CompChem #ChemSky (source Russell Boyd)
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Martijn Zwijnenburg @zwijcompchem.bsky.social · 24/10/2025
Next Thursday afternoon, 30/10, the @thomasyoungcentre.bsky.social is organising a symposium in London on modelling battery materials with as speakers Marie-Liesse Doublet (Montpellier), Alex Squires (Birmingham) and Benjamin Morgan (Bath).
thomasyoungcentre.org
TYC Symposium: Batteries - THOMAS YOUNG CENTRE
Marie-Liesse Doublet, Montpelier - The Mirage of Anionic Redox for High-Energy Batteries Alexander Squires, Birmingham - Mixed-anion NaTaOxCl6-2x oxychlorides: From crystalline to amorphous networks f...
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Aron ⇋ e⁻ @aronwalsh.github.io · 21/10/2025
The number of emails from potential PhDs & postdocs has skyrocketed this year. I can see many factors (from geopoliticial to scientific), but it's genuinely tough to deal with. I also remember the feeling of getting no response... #ChemSky
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Jake Yeston @jakeyeston.bsky.social · 16/10/2025
Lots of great chemsky content in @science.org this week, including a remarkable porphyrin nanobelt from the Saywell and Anderson groups 🧪 www.science.org/doi/10.1126/...
ball-and-stick and line structures of a porphyrin nanobelt
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FX Coudert @nanoporous.net · 15/10/2025
Most journals now accept format-free submission (and the others should). Another example of “using AI” to solve a problem that could easily be solved another way?
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Ben Blaiszik @benblaiszik.bsky.social · 15/10/2025
🔥We're excited to announce a major milestone for the machine-learned interatomic potential (MLIP) ecosystem: TorchSim is moving to community ownership and governance through a partnership with Radical AI and the open-source community! TorchSim is an atomistic simulation engine built for the AI era.
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Birmingham 81 @birmingham81.bsky.social · 14/10/2025
In case you haven't seen it yet, the 2023 film Rye Lane is on the BBC iPlayer and is a total delight ▶️📺 www.bbc.co.uk/iplayer/epis...
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Aron ⇋ e⁻ @aronwalsh.github.io · 14/10/2025
Historical evidence of life before matplotlib #CompChem
Screenshot from the materials modelling code GULP
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Cory Simon @corymsimon.bsky.social · 13/10/2025
my PhD student G. Fabusola trained and tested machine learning algorithms to parse the response pattern of a conductive-MOF sensor array from K. Mirica's group! 👃 the electronic nose could detect and differentiate toxic gases and H₂S/SO₂ mixtures at ppm-levels. pubs.acs.org/doi/10.1021/...
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Aron ⇋ e⁻ @aronwalsh.github.io · 13/10/2025
You never know what you’ll find while wandering around London #ChemSky
A photograph of a memorial for Michael Faraday at Elephant and Castle in London
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Aron ⇋ e⁻ @aronwalsh.github.io · 10/10/2025
I was a chemist working on the physics of semiconductors and found a path back home with the emerging field of electroactive MOFs pubs.acs.org/doi/abs/10.1...
pubs.acs.org
Defect Processes in a PbS Metal Organic Framework: A Quantum-Confined Hybrid Semiconductor
We report the effects of reduced dimensionality and organic networks on defect reactions in a hybrid solid of PbS (galena). Through first-principles calculations, we demonstrate that formation of the ...
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