Andrew S. Rosen
@andrewrosen.bsky.social
Assistant Professor at Princeton. Quantum-chemical engineer and materials designer.
https://rosen.cbe.princeton.edu
https://rosen.cbe.princeton.edu
I'm trapped in a car with my parents singing Chappell Roan and saying something about "6-7."
Please spare me.
Please spare me.
November 22, 2025 at 6:55 PM
I'm trapped in a car with my parents singing Chappell Roan and saying something about "6-7."
Please spare me.
Please spare me.
Ah, you can't beat the classics! 😂
November 17, 2025 at 4:26 AM
Ah, you can't beat the classics! 😂
Reposted by Andrew S. Rosen
I think about this post every day 🧪
November 7, 2025 at 12:15 PM
I think about this post every day 🧪
Moon Duchin on the ‘Mathematical Quagmire’ of Gerrymandering
www.nytimes.com
November 6, 2025 at 3:00 AM
Reposted by Andrew S. Rosen
@andrewrosen.bsky.social highlights @tibor-szilvasi.bsky.social’s work using ML potentials to model supported Ag nanoparticles - revealing that idealized shapes don’t match experiments below 8 nm. Read the Highlight: onlinelibrary.wiley.com/doi/10.1002/... #AngewandteChemieNovit
Capturing the Complexities of Catalyst–Support Interactions with the Help of Machine Learning
Maxson and Szilvási use a machine-learned interatomic potential to model supported silver nanoparticles. They show that the idealized nanoparticle shapes commonly invoked in the computational catalys...
onlinelibrary.wiley.com
November 3, 2025 at 4:34 PM
@andrewrosen.bsky.social highlights @tibor-szilvasi.bsky.social’s work using ML potentials to model supported Ag nanoparticles - revealing that idealized shapes don’t match experiments below 8 nm. Read the Highlight: onlinelibrary.wiley.com/doi/10.1002/... #AngewandteChemieNovit
Reposted by Andrew S. Rosen
I have just been sending this to people. You know, from the last time he pulled this shit www.funraniumlabs.com/2017/03/want...
So, You Want To Test A Nuclear Weapon? - Funranium Labs
I dedicate the following rant to my Lovely Assistant, who can probably recite this by heart now, and Meredith Yayanos who hit boggleface about halfway through an in person version and asked “PLEASE, W...
www.funraniumlabs.com
October 30, 2025 at 2:52 AM
I have just been sending this to people. You know, from the last time he pulled this shit www.funraniumlabs.com/2017/03/want...
Me: Where are my keys?!
Me: Oh yeah! They're in the zeolite!
Me: Oh yeah! They're in the zeolite!
October 27, 2025 at 4:24 PM
Me: Where are my keys?!
Me: Oh yeah! They're in the zeolite!
Me: Oh yeah! They're in the zeolite!
Reposted by Andrew S. Rosen
Professor Emeritus Axel D. Becke @dalhousieu.bsky.social has passed away at age 72.
October 26, 2025 at 2:46 PM
Professor Emeritus Axel D. Becke @dalhousieu.bsky.social has passed away at age 72.
I have been an "inbox 0" person my whole life. This was the first week where I started to doubt if it would be able to remain this way. 😅 Not out of the woods yet... but getting there.
October 25, 2025 at 5:12 AM
I have been an "inbox 0" person my whole life. This was the first week where I started to doubt if it would be able to remain this way. 😅 Not out of the woods yet... but getting there.
I've been found out; indeed, all my contributions to open-source software are largely driven by sheet frustration. 😅 www.youtube.com/shorts/Ya5xb...
The *truth* about open source
YouTube video by Alberta Tech
www.youtube.com
October 24, 2025 at 10:29 PM
I've been found out; indeed, all my contributions to open-source software are largely driven by sheet frustration. 😅 www.youtube.com/shorts/Ya5xb...
To editors of @pubs.acs.org journals, I am sorry but the platform has been refusing to let me suggest alternate reviewers for months and the support team has not fixed the bug. It is not me! 😥 (But I am still sending them in via email... not sure if that is actually reflected in the system or not).
October 13, 2025 at 7:16 PM
To editors of @pubs.acs.org journals, I am sorry but the platform has been refusing to let me suggest alternate reviewers for months and the support team has not fixed the bug. It is not me! 😥 (But I am still sending them in via email... not sure if that is actually reflected in the system or not).
Reposted by Andrew S. Rosen
Me, a computationalist, writing the experimental part of a proposal:
a black and white cat is typing on a keyboard with the words " i have no idea what i 'm doing " below it
Alt: a black and white cat is typing on a keyboard with the words " i have no idea what i 'm doing " below it
media.tenor.com
October 9, 2025 at 5:51 PM
Me, a computationalist, writing the experimental part of a proposal:
Reposted by Andrew S. Rosen
Excellent Nobel Prize. My suggestion for next year: chemical engineering. Nobel himself was an engineer, and the prize awards achievements that "conferred the greatest benefit to humankind". Furthermore, the Prize should also be given to "improvements". When did that happen the last time?
Indeed! Great day for Aussie chemistry. Richard Robson's work is finally being properly recognised. Congratulations also to Kitagawa and Yaghi. #ozchem
October 8, 2025 at 2:26 PM
Excellent Nobel Prize. My suggestion for next year: chemical engineering. Nobel himself was an engineer, and the prize awards achievements that "conferred the greatest benefit to humankind". Furthermore, the Prize should also be given to "improvements". When did that happen the last time?
Maybe the Prize is really about the friends we made along the way.
October 8, 2025 at 11:51 AM
Maybe the Prize is really about the friends we made along the way.
No mention of Jeff Long and family in the cited references is a bit disappointing...
October 8, 2025 at 11:30 AM
No mention of Jeff Long and family in the cited references is a bit disappointing...
Never heard of 'em.
October 8, 2025 at 11:24 AM
Never heard of 'em.
Reposted by Andrew S. Rosen
We interrupt our regular programming to announce…
October 8, 2025 at 9:54 AM
We interrupt our regular programming to announce…
Reposted by Andrew S. Rosen
"We propose that a new and potentially extensive class of solid polymeric materials with unprecedented and possibly useful properties..." Quite a strong opening line by Hoskins and Robson pubs.acs.org/doi/abs/10.1...
BREAKING: The Nobel Prize in Chemistry has been awarded to Susumu Kitagawa, Richard Robson and Omar M. Yaghi “for the development of metal-organic frameworks”
Stay tuned for more.
#NobelPrize
Stay tuned for more.
#NobelPrize
October 8, 2025 at 10:06 AM
"We propose that a new and potentially extensive class of solid polymeric materials with unprecedented and possibly useful properties..." Quite a strong opening line by Hoskins and Robson pubs.acs.org/doi/abs/10.1...
Reposted by Andrew S. Rosen
Roberto Car and Michele Parrinello are on my #ChemNobel ballot for 2025 and for every year until they'll get it 😎
#NobelPrize week starts tomorrow & the #chemnobel is Wednesday… used to be so much Nobel chat on Tw*tter, but that is not replicated here, alas. Anyway, for the record, I think MOFs will win at some point (maybe this year maybe not). Balasubramanian & Klenerman a good bet for next-gen sequencing too
October 6, 2025 at 5:09 PM
Roberto Car and Michele Parrinello are on my #ChemNobel ballot for 2025 and for every year until they'll get it 😎
Reposted by Andrew S. Rosen
Check out my 'News & Views' on this exciting work, now out by invitation in Nature Chemistry @natchem.nature.com and available to read at rdcu.be/eJitR and www.nature.com/articles/s41...
October 4, 2025 at 3:37 PM
Check out my 'News & Views' on this exciting work, now out by invitation in Nature Chemistry @natchem.nature.com and available to read at rdcu.be/eJitR and www.nature.com/articles/s41...
A beautifully done chemical engineering video!!! We need more of these!! Thank you, @techconnectify.bsky.social!
I've been working on a new video for a while. Starting a new series today! We're gonna explore all the technology you find in ordinary cars, and we're starting with the catalytic converter.
youtu.be/Aytf6ARcs8s
youtu.be/Aytf6ARcs8s
Catalytic converters are simple, but getting them to work is not
YouTube video by Technology Connections
youtu.be
October 3, 2025 at 1:10 AM
A beautifully done chemical engineering video!!! We need more of these!! Thank you, @techconnectify.bsky.social!
This is no way to run a fellowship program. If eligibility rules were going to be changed, the NSF should have alluded to this earlier or not posted the original funding opportunity at all. It's a cruel thing to do to many of the nation's best and brightest.
www.science.org/content/arti...
www.science.org/content/arti...
‘Completely shattered.’ Changes to NSF’s graduate student fellowship spur outcry
The announcement comes months later than usual, leaving many would-be applicants stranded
www.science.org
September 27, 2025 at 12:11 AM
This is no way to run a fellowship program. If eligibility rules were going to be changed, the NSF should have alluded to this earlier or not posted the original funding opportunity at all. It's a cruel thing to do to many of the nation's best and brightest.
www.science.org/content/arti...
www.science.org/content/arti...
Reposted by Andrew S. Rosen
I am thrilled, honored, humbled, excited (and nervous!) to announce that I have recently accepted a position in the Institute of Physical Chemistry at the University of Freiburg! As of this morning I am officially a resident of Freiburg, Germany and I am very excited to soon lead a lab of students!
September 15, 2025 at 6:32 PM
I am thrilled, honored, humbled, excited (and nervous!) to announce that I have recently accepted a position in the Institute of Physical Chemistry at the University of Freiburg! As of this morning I am officially a resident of Freiburg, Germany and I am very excited to soon lead a lab of students!
Reposted by Andrew S. Rosen
I will be joining the University of Cambridge as an Assistant Professor in the Yusuf Hamied Department of Chemistry! 🧪🎉
𝐈 𝐚𝐦 𝐚𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐫𝐞𝐜𝐫𝐮𝐢𝐭𝐢𝐧𝐠 𝐬𝐭𝐮𝐝𝐞𝐧𝐭𝐬, and am very keen to support fellowship applications – visit our website for details! ⬇️
𝐈 𝐚𝐦 𝐚𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐫𝐞𝐜𝐫𝐮𝐢𝐭𝐢𝐧𝐠 𝐬𝐭𝐮𝐝𝐞𝐧𝐭𝐬, and am very keen to support fellowship applications – visit our website for details! ⬇️
September 11, 2025 at 2:27 PM
I will be joining the University of Cambridge as an Assistant Professor in the Yusuf Hamied Department of Chemistry! 🧪🎉
𝐈 𝐚𝐦 𝐚𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐫𝐞𝐜𝐫𝐮𝐢𝐭𝐢𝐧𝐠 𝐬𝐭𝐮𝐝𝐞𝐧𝐭𝐬, and am very keen to support fellowship applications – visit our website for details! ⬇️
𝐈 𝐚𝐦 𝐚𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐫𝐞𝐜𝐫𝐮𝐢𝐭𝐢𝐧𝐠 𝐬𝐭𝐮𝐝𝐞𝐧𝐭𝐬, and am very keen to support fellowship applications – visit our website for details! ⬇️
This is me. Anyone who knows me will attest to the fact that I will not rest until the bug is identified and, ideally, squashed. 😅
(Based on a true story today)
Me: I should go to bed early.
Also me: Nope I can't sleep. I really want to understand why this code isn't behaving as expected.
...
N hour(s) later: I figured it out, filed the bug, and now I can finally sleep with peace of mind.
Me: I should go to bed early.
Also me: Nope I can't sleep. I really want to understand why this code isn't behaving as expected.
...
N hour(s) later: I figured it out, filed the bug, and now I can finally sleep with peace of mind.
September 11, 2025 at 2:13 AM
This is me. Anyone who knows me will attest to the fact that I will not rest until the bug is identified and, ideally, squashed. 😅