David Walker
@davidwalkeruk.bsky.social
X-ray Crystallographer, Warwick PI for the National Electron Diffraction Facility, Climber, Gamer, www.warwick.ac.uk/go/X-ray
Reposted by David Walker
Nature research paper: Experimental determination of partial charges with electron diffraction
go.nature.com/3UBdgwX
go.nature.com/3UBdgwX
Experimental determination of partial charges with electron diffraction - Nature
An experimental method is used to assign partial charges based on crystal structure determination through electron diffraction, applicable to any crystalline compound.
go.nature.com
August 23, 2025 at 11:43 AM
Nature research paper: Experimental determination of partial charges with electron diffraction
go.nature.com/3UBdgwX
go.nature.com/3UBdgwX
Reposted by David Walker
A new photodetector made up of vertically stacked perovskite-based light absorbers can produce real photographic images, potentially challenging the dominance of silicon-based imaging systems. 🧪⚛️💡 physicsworld.com/a/stacked-pe...
Stacked perovskite photodetector outperforms conventional silicon image sensors – Physics World
New device could lead to sensitive, artefact-free imaging with improved colour fidelity
physicsworld.com
July 29, 2025 at 12:13 PM
A new photodetector made up of vertically stacked perovskite-based light absorbers can produce real photographic images, potentially challenging the dominance of silicon-based imaging systems. 🧪⚛️💡 physicsworld.com/a/stacked-pe...
Reposted by David Walker
Have you ever wondered 'what would that look like in a diffractometer?' - then Jim Kaduk has probably got you covered in this paper pubs.aip.org/aca/sdy/arti...
“Everything's a sample”: Characterizing everyday materials using x-ray powder diffraction
We can learn something scientifically interesting about literally everything around us by examining it in a powder diffractometer. Comparing a macroscopic under
pubs.aip.org
June 18, 2025 at 6:35 AM
Have you ever wondered 'what would that look like in a diffractometer?' - then Jim Kaduk has probably got you covered in this paper pubs.aip.org/aca/sdy/arti...
Reposted by David Walker
Jon Stewart is a legend & the way this show is trying to explain to a mainstream audience the gravity what is happening in the US is amazing. It was both thrilling & terrifying to be part of it. Thank you @TheDailyShow 👏
www.youtube.com/watch?v=vG7C...
www.youtube.com/watch?v=vG7C...
Carole Cadwalladr - Broligarchs, AI, and a Techno-Authoritarian Surveillance State | The Daily Show
YouTube video by The Daily Show
www.youtube.com
June 3, 2025 at 9:46 AM
Jon Stewart is a legend & the way this show is trying to explain to a mainstream audience the gravity what is happening in the US is amazing. It was both thrilling & terrifying to be part of it. Thank you @TheDailyShow 👏
www.youtube.com/watch?v=vG7C...
www.youtube.com/watch?v=vG7C...
Reposted by David Walker
Economic uncertainty update:
The thing about veering wildly between policy positions, favouring and then discarding a new maverick advisor each week, and using contradictory justifications at every turn, is that even if one particular pivot is in the direction of sanity, chaos is the constant.
The thing about veering wildly between policy positions, favouring and then discarding a new maverick advisor each week, and using contradictory justifications at every turn, is that even if one particular pivot is in the direction of sanity, chaos is the constant.
April 10, 2025 at 3:09 PM
Economic uncertainty update:
The thing about veering wildly between policy positions, favouring and then discarding a new maverick advisor each week, and using contradictory justifications at every turn, is that even if one particular pivot is in the direction of sanity, chaos is the constant.
The thing about veering wildly between policy positions, favouring and then discarding a new maverick advisor each week, and using contradictory justifications at every turn, is that even if one particular pivot is in the direction of sanity, chaos is the constant.
Reposted by David Walker
A decision I find hard to understand.
www.theguardian.com/technology/2...
www.theguardian.com/technology/2...
Royal Society decides not to take disciplinary action against Elon Musk
Exclusive: Fellows argue Musk has violated code of conduct but council believes investigation ‘could do more harm than good’
www.theguardian.com
March 25, 2025 at 8:15 PM
A decision I find hard to understand.
www.theguardian.com/technology/2...
www.theguardian.com/technology/2...
Reposted by David Walker
Cosmic Distance Calibration xkcd.com/3066
March 21, 2025 at 7:49 PM
Cosmic Distance Calibration xkcd.com/3066
Reposted by David Walker
George Sheldrick will be missed🕯️🕯️🕯️#SHELX #crystallography #education
February 22, 2025 at 12:42 AM
George Sheldrick will be missed🕯️🕯️🕯️#SHELX #crystallography #education
Reposted by David Walker
Just enjoyed a very productive day at the National Electron Diffraction Facility at the University of Warwick where our host Jere Tidey helped us solve some amazing structures and spot an exoplanet. Today I also learned why orienting a crystal on a zone axis is bad thing even though it looks pretty.
January 23, 2025 at 9:28 PM
Just enjoyed a very productive day at the National Electron Diffraction Facility at the University of Warwick where our host Jere Tidey helped us solve some amazing structures and spot an exoplanet. Today I also learned why orienting a crystal on a zone axis is bad thing even though it looks pretty.
Reposted by David Walker
The Royal Society continuing to have Elon Musk as a Fellow is atrocious
January 20, 2025 at 9:37 PM
The Royal Society continuing to have Elon Musk as a Fellow is atrocious
Reposted by David Walker
Super happy to share our latest work! A detailed protocol for #MicroED sample prep available @NatureProtocols! It covers #FIB, grid making, sample handling, #CryoFLM, and more! Hope it helps!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Comprehensive microcrystal electron diffraction sample preparation for cryo-EM - Nature Protocols
We present a protocol for preparing microcrystal samples for cryo-EM diffraction imaging, including room temperature solid-state small molecules and soluble and membrane protein crystals.
www.nature.com
December 20, 2024 at 5:19 PM
Super happy to share our latest work! A detailed protocol for #MicroED sample prep available @NatureProtocols! It covers #FIB, grid making, sample handling, #CryoFLM, and more! Hope it helps!
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by David Walker
Magnetic crystallography comes of age: see Acta Cryst. (2024). B80, 509-513 doi.org/10.1107/S205...
December 3, 2024 at 4:02 PM
Magnetic crystallography comes of age: see Acta Cryst. (2024). B80, 509-513 doi.org/10.1107/S205...
Reposted by David Walker
Do different people analyse the same ( #SAXS ) datasets differently? We did a huge round robin experiment to find out.
Turns out the answer is: "yes, more than it should be", and, surprisingly: "you don't automatically get better with more experience or age".🧪⚛️
doi.org/10.1107/S160...
Turns out the answer is: "yes, more than it should be", and, surprisingly: "you don't automatically get better with more experience or age".🧪⚛️
doi.org/10.1107/S160...
The human factor: results of a small-angle scattering data analysis round robin
A data-analysis round robin was performed using four real-world datasets to quantify the role of the human factor in analysis; the 46 responses show that the analyses by different researchers and labo...
doi.org
November 25, 2024 at 11:06 AM
Do different people analyse the same ( #SAXS ) datasets differently? We did a huge round robin experiment to find out.
Turns out the answer is: "yes, more than it should be", and, surprisingly: "you don't automatically get better with more experience or age".🧪⚛️
doi.org/10.1107/S160...
Turns out the answer is: "yes, more than it should be", and, surprisingly: "you don't automatically get better with more experience or age".🧪⚛️
doi.org/10.1107/S160...
Reposted by David Walker
I was very fortunate to be asked to comment on #microed in the realm of supramolecular chemistry. Extremely interesting article in @chemistryworld.bsky.social
Microcrystal electron diffraction promises a revolution in study of proteins, small molecules:
www.chemistryworld.com/news/microcr...
Microcrystal electron diffraction promises a revolution in study of proteins, small molecules:
www.chemistryworld.com/news/microcr...
Microcrystal electron diffraction promises a revolution in study of proteins, small molecules
Microcrystal electron diffraction microED promises revolution study proteins small molecules
www.chemistryworld.com
November 20, 2024 at 10:07 AM
I was very fortunate to be asked to comment on #microed in the realm of supramolecular chemistry. Extremely interesting article in @chemistryworld.bsky.social
Microcrystal electron diffraction promises a revolution in study of proteins, small molecules:
www.chemistryworld.com/news/microcr...
Microcrystal electron diffraction promises a revolution in study of proteins, small molecules:
www.chemistryworld.com/news/microcr...
Reposted by David Walker
🌍 Extracting heat from water contained within abandoned coal mines is one of the geologically most fascinating heat decarbonisation opportunities of recent years.
👇🏾 Read more about it here:
www.bbc.co.uk/news/article...
👇🏾 Read more about it here:
www.bbc.co.uk/news/article...
Energy bills could be cut using water from abandoned Welsh coal mines
Work is under way to develop mine water heat projects in Rhondda Cynon Taf, Caerphilly and north east Wales.
www.bbc.co.uk
September 11, 2024 at 10:47 AM
🌍 Extracting heat from water contained within abandoned coal mines is one of the geologically most fascinating heat decarbonisation opportunities of recent years.
👇🏾 Read more about it here:
www.bbc.co.uk/news/article...
👇🏾 Read more about it here:
www.bbc.co.uk/news/article...