#crystallography

The Olex2 User Meeting at STOE & Cie GmbH has wrapped up! Huge thanks to the Olex2 team Michael Bodensteiner, Horst Puschmann, Florian Kleemiß and Birgit Hischa, and all participants for the great discussions and shared insights. I’ve learned a lot and really enjoyed having everyone here! 🤓

Looking forward to the next opportunity to learn and exchange ideas together!

#Olex2 #Crystallography #STOE #ScienceInAction

Hard to believe it’s already a week since the STOE User Meeting 2025! 🎉 Relive the highlights in Laura’s personal recap 👉 stoe.com/stoe-user-meeting-202
Thanks to everyone who joined us and made the meeting such a success!
#STOE #Crystallography #ScienceCommunity

John Faithfull 🌍🇪🇺🏴󠁧󠁢󠁳󠁣󠁴󠁿🧡✊🏻✊🏿FaithfullJohn@mastodon.scot
2025-09-04

#MinCup25 More reasons to vote for the incredible #calcite and its stunning crystallographic diversity. In Viktor Goldschmidt's monumental "Atlas der Krystallformen" calcite alone gets 153 plates showing different forms and habits. Enjoy them all here, although it may take a while! 🤩 😂 🤓
archive.org/details/atlasderkr

@MineralCup

#Geology #Mineralogy #Crystallography

A plate  in an old book, featuring beautiful precise line drawings of complex crystal forms.
2025-08-27

The Inorganic Crystal Structure Database (ICSD) now contains more than 300,000 entries – with about 280,000 unique structures not included in the CSD.

Good news for crystallography: ICSD data is now integrated into CellCheckCSD.
This means:
• Faster checks if a structure is already known
• Avoiding redundant determinations
• One unified search across organic, organometallic & inorganic chemistry

#Crystallography #OpenScience #MaterialsScience #Chemistry

2025-08-26

We’re at ECM35 – European Crystallographic Meeting, 25–29 Aug 2025 in Lviv 🇺🇦 & Poznań 🇵🇱!

🎉 This year we celebrate 40 years of ICSD with a reception on 28 Aug. Prof. Dr. Wolfram Horstmann will join us – seats are limited, so register at our booth. Don’t miss the latest ICSD updates with Dr. Annett Steudel. See you there! ✨

#ECM35 #ICSD #Crystallography #Science

2025-08-13

If you are trying to use LLM for solving atomic structure from XRD, don't!

You are very likely to embarass yourself because you don't understand the basics of crystallography

#crystallography #LLM

Getting around to doing some reading about a recent "discovery" which sounds to me like it is actually Crystallography.

#Crystallography

youtu.be/M4Wf_JT60rI

2025-08-11

#ANSTO is advertising an ongoing position on the MX beamline at the Australian Synchrotron, looking for a chemical crystallographer to join the team.

I've no experience on MX, but in general the beamline scientists at the Aussietron seem to have a good time? Should be a great experience!

careers.ansto.gov.au/job/Melbo

Australians only, unfortunately.

#GetFediHired #Synchrotron #AustralianSynchrotron #Crystallography

2025-08-08

Question for people smarter than me.

They mention that you can't have long-range 2D solids which kind of goes against my vision of graphene, h-BN, etc. which are crystalline over a "reasonable" long-range (few microns). How is this possible?

Mike Glazer always says 2D structures don't exist as you always have the thickness of the atoms. Is this the reason?
(yes, that Glazer and yes, name dropping)

#physics #crystallography

Peierls (1934, 1935)has argued that no long range order exists in two dimensional solids because thermal motion of low energy phonons results in a mean square deviation of atoms from their equilibrium positions which increases logarithmically with the size of the system. The absence of long range order of this simple form has been shown rigorously by Mermin (1968). Similar arguments can be used to show that there is no spontaneous magnetization in a two dimensional Heisenberg magnet (Mermin and Wagner 1966) and that the expectation value of the superfluid order parameter in a two dimensional Bose liquid is zero (Hohenberg 1967).
2025-08-07

"Accelerating Discovery of Ternary Chiral Materials via Large-Scale Random Crystal Structure Prediction"

Authors use an algorithm to create 20 millions potential new materials and go through a bunch of test to check for stability. They end up with 142 compounds...
They proceed to check the potential properties for some of these new materials.

I like that the starting point relies on crystallographically-sensible reasoning and clearly relies on an understanding of the science at play and not just "let throw everything in a big computer".

arxiv.org/pdf/2508.04110
#crystallography #MaterialScience

A complex diagram showing the workflow of the article. I explain the main parts in the text (happy to detail it more if needed)
2025-08-06

Crystallography & structural biology folks: does anyone still use these? I've been finding stray ones around and now found what looks like an entire case of them. No idea if they are remnants of stuff because the lab was here for a long time or if I should try to find them a home on campus.

maybe @xtaldave or @iris ?

#Crystallography #Chemistry #Biology

A small glass rectangle with 9 hemispherical depressions in a 3 by 3 grid.

Position for Research Associate (PostDoc) in experimental low temperature #mineralogy and #crystallography at GFZ, Potsdam #Germany #geology

gfz.de/en/career/job-offers/de

2025-07-08

New study uncovers mechanisms behind COVID-19 treatment resistance: a publication highlight from Meharry Medical College Ph.D. candidate KeAndreya Morrison featuring Stefan Sarafianos at Emory University.

Read more here: medium.com/sbgrid-community-ne

#SBGrid #StructuralBiology #COVID-19 #Crystallography #Antivirals

2025-07-02

When you start your Rietveld refinement, you ae going to have a good day!
#crystallography

Screenprint of refinement values GOF=1.84, Rp=11.46 et wRp=14.07
Keiran Rowellkeiran_rowell
2025-07-01

Kendrew's 1962 lecture is a great read for insight into the history of , including the massive experimental effort to eke out the structure of . This required calculating Fourier transforms of thousands of reflexions, requiring the latest (at the time) like the first EDSAC digital computer and 7090

nobelprize.org/uploads/2018/06

François Ferron 🇪🇺 🔷️🔶️F2erron@fediscience.org
2025-06-28

The #AFC2026 conference will be a major event for our community of #crystallographers: a great opportunity to get together and exchange ideas on the latest developments in crystallography.
It will also be a chance to (re)discover the city of Lille, its belfries, and its gastronomy.
The AFC conference, will be held in Villeneuve d'Ascq, at Lilliad Learning Center Innovation, from June 30 to July 3, 2026.

While we await the detailed program and the opening of registration, we invite you to save the dates in your calendar!

All information is available on the conference website: afc2026.afc.asso.fr
@strucbio @ActaCrystF @afmblab.bsky.social
@cnrs

#crystallography #conference #science

Guillaume GaullierGuillawme@fediscience.org
2025-06-23

An interesting use case of LLMs is as a conversational interface to some body of text, as a complement to other forms of navigation: from a table of content or index, via full-text search, or reading specific sections or even the whole text cover-to-cover.

Of course the LLM can still make up nonsense, but this is a similar limitation to a full-text search leading to a section irrelevant to your current question if the search terms match too broadly. With any navigation method, eventually you need to read the material, once you find the section you need.

The Phenix documentation, papers, newsletters and tutorial videos have been fed to an LLM, so now we can navigate it as a conversation: phenix-online.org/version_docs
A quick test trying to answer a question I knew the answer to suggests that it is working pretty well for sufficiently specific questions. This will likely be useful.

#StructuralBiology #crystallography #CryoEM

François Ferron 🇪🇺 🔷️🔶️F2erron@fediscience.org
2025-06-18

On Thursday June 26th, from 2 to 4 p.m., the next Café Solutions organized by the French Association of Crystallography (#AFC) Young #Crystallographers will be devoted to AutoProc (examples and limits).

For this event, we'll be delighted to welcome Dr William SHEPARD, Beamline Scientist at the Synchrotron Soleil.

English speakers are more than welcome 😉
Here's the zoom link to the Café Solutions:➡️ u-bordeaux-fr.zoom.us/j/835026
@strucbio @ActaCrystF
@afmblab.bsky.social
#crystallography

Dave nλ=2dsinθxtaldave@xtaldave.net
2025-06-11

"UK’s ‘OpenBind’ consortium will use breakthrough experimental technology to generate the world’s largest collection of data [500,000 structures] on how drugs interact with proteins, the building blocks of the body."

Looks like the current diversity & depth of the PDB (i.e. training set) for Alphafold is lacking, and Diamond-II flagship Beamline K04 will have enough throughput to do this.

@strucbio #MacromolecularCrystallography #Crystallography #MX

gov.uk/government/news/uk-to-b

Planetary Ecologistplanetaryecologist
2025-05-28

Vegard's law (Mineralogy 💎)

In crystallography, materials science and metallurgy, Vegard's law is an empirical finding resembling the rule of mixtures. In 1921, Lars Vegard discovered that the lattice parameter of a solid solution of two constituents is approximately a weighted mean of the two constituents' lattice parameters at the same temperature: a A ( 1 − x ) B x ...

en.wikipedia.org/wiki/Vegard's

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