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Institute of Molecular Physical Science (IMPS), ETH Zurich

@imps-ethzurich

The Institute of Molecular Physical Science (IMPS) @ETH Zurich combines theory and experiment in fundamental investigations of matter in the gas, liquid and solid phases. www.imps.ethz.ch

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11.04.2025
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Latest posts by Institute of Molecular Physical Science (IMPS), ETH Zurich @imps-ethzurich

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Elektriker:in (m/w/d)

⚡Elektriker:in gesucht!
jobs.ethz.ch/job/view/JOP...

02.02.2026 09:39 👍 0 🔁 0 💬 0 📌 0
Semiclassical spin exchange via temperature-dependent transition states Spin-exchange collisions have been widely studied in recent years, and various quantum-mechanical scattering approaches have been developed to calculate the rates. However, these methods based on glob...

(4/4) In this way, we obtain new insight about reaction mechanisms not predicted by classical theories.

📖 Read the full article by Debaarjun Mukherjee and Professor Jeremy Richardson, both at IMPS, in APS Journals (@apsphysics.bsky.social):
journals.aps.org/prresearch/a...

@ethz.ch

29.01.2026 15:18 👍 0 🔁 0 💬 0 📌 0

(3/4) the transition state itself depends on the temperature, causing a complete breakdown of the Arrhenius law.
We formulate a new semiclassical rate equation which accounts for quantum delocalization and captures the correct behavior.

29.01.2026 15:18 👍 0 🔁 0 💬 1 📌 0

(2/4) However, in reality, molecules are quantum mechanical, which may cause deviations from the expected behavior. In this paper, we show that in certain nonadiabatic reactions, such as spin exchange (a key process for controlling quantum materials),

29.01.2026 15:18 👍 0 🔁 0 💬 1 📌 0
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(1/4) 🔎The rates of most chemical reactions are known to follow the classical Arrhenius equation, which assumes that in order for a reaction to occur, molecules must pass through a transition state located at the top of an energy barrier.

29.01.2026 15:18 👍 0 🔁 0 💬 1 📌 0
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📣⚡Prof. Sir David Clary FRS: "The Centenary of the Schrödinger Equation"
Time: Tuesday, 9 December 2025, at 4:45 pm,
Location: HCI G7 at ETH Hönggerberg

as part of the Colloquium of @imps-ethzurich.bsky.social

@ethz.ch

04.12.2025 11:07 👍 1 🔁 0 💬 0 📌 0

@erc.europa.eu

07.11.2025 14:52 👍 0 🔁 0 💬 0 📌 0

🎉 Congratulations to Prof. Dr. Markus Reiher @imps-ethzurich.bsky.social on being awarded a prestigious ERC Synergy Grant!
Read about the funded project that aims to accelerate the development of chemical catalyst: ethz.ch/en/news-and-...

06.11.2025 13:07 👍 0 🔁 0 💬 1 📌 0
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Farewell after three decades of chemistry at ETH Zurich Peter Chen, Professor of Physical-Organic Chemistry, will be delivering a farewell lecture to mark his upcoming retirement. Chen is a man with a remarkable history who has played a significant role in...

Peter Chen’s farewell lecture, entitled “Chemical Stories”, will take place on 22 October 2025 from 5.15 to 6.30 pm in the Audi Max (HG F30) at ETH Zurich.

14.10.2025 07:22 👍 9 🔁 1 💬 2 📌 0
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Open Call for NOMIS–ETH Postdoctoral Fellowships The 2025 call for applications for the NOMIS–ETH Fellowship Programme within the Centre for Origin and Prevalence of Life is open. Researchers are invited to apply until 7 November 2025, at 17:00 Zuri...

📣 Open Call – Applications are now open for the 2025 NOMIS–ETH Postdoctoral Fellowships at the @copl-eth.bsky.social. @ethz.ch

A great opportunity for early-career researchers to lead interdisciplinary projects on the origin & prevalence of life.

Learn more and apply: shorturl.at/RfjJJ

05.09.2025 10:05 👍 1 🔁 3 💬 0 📌 0
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Zürcher Museen an der langen Nacht Die Nacht wird zum Tag! Entdecke die ausserordentliche Vielfalt der Zürcher Museen am 7. September von 18-02 Uhr.

On 6 September, ETH Zurich takes part in the Zürcher Nacht der Museen. Discover extract ETH Zurich, the Graphische Sammlung and the Thomas Mann Archive at the main building, explore geology at focusTerra, and step into science history at the Semper Observatory.

Program:

04.09.2025 11:57 👍 8 🔁 3 💬 1 📌 0
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Uncovering Cooperativity in Molecular Glues: Insights and Simulations | Shu-Yu Chen posted on the topic | LinkedIn While cooperativity is often seen as a desirable feature of low-weight molecular glues (MGs)—particularly for mitigating the hook effect (or prozone phenomenon) in targeted protein degradation (TPD)—i...

(2/2) See also the summary LinkedIn post by Shu-Yu Chen:
www.linkedin.com/posts/shu-yu...

25.08.2025 08:09 👍 0 🔁 0 💬 0 📌 0
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Cooperative Free Energy: Induced Protein–Protein Interactions and Cooperative Solvation in Ternary Complexes Protein–protein interactions (PPIs) play an essential role in biological processes. Molecules that stabilize or induce PPIs in ternary complexes have received growing attention for their therapeutic potential in engaging “undruggable” targets and their high selectivity. Here, we investigate the thermodynamics of the cooperative phenomenon in ternary complexes. The thermodynamics of cooperativity are characterized by the cooperative free energy, which comprises induced PPIs, cooperative solvation free energy, ligand-associated geometric free-energy costs, and gas-phase correlation. Importantly, the induced PPIs only account for the binding affinity between stabilized conformations of the protein partners, i.e., the free-energy change associated with the conformational transition during protein–ligand binding is not accounted for. By introducing an approximated expression for the cooperative free energy, we developed a rapid computational method, which allowed us to crudely predict cooperativity in eight ternary complexes (Kendall τ = 0.79). We highlight that the term cooperativity used in protein–protein stabilization does not represent the cooperativity phenomenon in three-body systems. We also critically discuss the counterintuitive interpretation of cooperative free energy due to its asymmetric nature. Our study shows how cooperativity stabilizes ternary complexes and provides a thermodynamic basis of cooperativity in protein–ligand–protein complexes.

(1/2) Read the latest, collaborative article about "Cooperative Free Energy" by Shu-Yu Chen, Sereina Riniker, Riccardo Solazzo at @ethz.ch, and Marianne Fouché, Hans-Joerg Roth, and Birger Dittrich from Novartis in the Journal of Chemical Theory and Computation:
pubs.acs.org/doi/10.1021/...

25.08.2025 08:09 👍 0 🔁 0 💬 1 📌 0
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🚀 News from Our Group at ETH Zurich! | Ioannis Pagonakis posted on the topic | LinkedIn 🚀 News from Our Group at ETH Zurich! I'm delighted to share that one more theoretical gyrotron paper from our group has been selected as an Editor’s Pick in the latest issue of Physics of Plasmas. We...

(3/3) See also the summary LinkedIn post by Ioannis Pagonakis: www.linkedin.com/feed/update/...

15.08.2025 09:27 👍 0 🔁 0 💬 0 📌 0
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Effects of reflected electrons on the efficiency of high-power gyrotrons Efficiency is a key factor for high-power gyrotrons, particularly in future fusion power plants, where a large number of gyrotron units will be required for pla

(2/3) in the Editor’s Pick of Physics of Plasmas!
Read the article here: pubs.aip.org/aip/pop/arti...

15.08.2025 09:27 👍 0 🔁 0 💬 1 📌 0

(1/3) The exciting and innovative study featuring a novel approach to enhancing the efficiency of high-power gyrotrons by Lea Marti, Ioannis Pagonaiks, Chieh-Lin Chiang, Chuanren Wu, Jérémy Genoud, Marthe Millen, Jean-Philippe Hogge, and Alexander Barnes was highlighted

15.08.2025 09:27 👍 0 🔁 0 💬 1 📌 0
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Attosecond spectroscopy of molecular charge transfer uncovers a 1.5-fs delay in population transfer - Nature Communications While population transfer between electronic states occurs instantly in two-state model systems, here the authors show that real-world systems with coupling to additional states can exhibit measu...

(2/2) using attosecond spectroscopy supported by quantum-chemical calculations.

Read the article in Nature Communications here: www.nature.com/articles/s41...

See also the summary post by @Hans Jakob Wörner: www.linkedin.com/feed/update/...

@ethz.ch

12.08.2025 13:59 👍 1 🔁 0 💬 0 📌 0
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(1/2) The groundbreaking study of Danylo Matselyusk, Florian Rott, Thomas Schnappinger, Pengju Zhang, Zheng Li, Jeremy Richardson, Regina de Vivie-Riedle, and Hans Jakob Wörner proposes a novel understanding of fundamental quantum-dynamical processes,

12.08.2025 13:59 👍 0 🔁 0 💬 1 📌 0
Hertha Sponer in the lab. Credit: Science History Images/Alamy Stock Photo.

Hertha Sponer in the lab. Credit: Science History Images/Alamy Stock Photo.

A substantial number of female physicists in the first half of the 20th century contributed to quantum physics. For the history of physics to properly recognize their work, new approaches are needed, argues Andrea Reichenberger in Nature Reviews Physics. go.nature.com/41mjQuJ #WomeninSTEM ⚛️ 🧪

07.08.2025 01:18 👍 39 🔁 14 💬 1 📌 0
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Transferring Knowledge from MM to QM: A Graph Neural Network-Based Implicit Solvent Model for Small Organic Molecules The conformational ensemble of a molecule is strongly influenced by the surrounding environment. Correctly modeling the effect of any given environment is, hence, of pivotal importance in computationa...

Read the innovative article "Transferring Knowledge from MM to QM: A Graph Neural Network-Based Implicit Solvent Model for Small Organic Molecules" by Paul Katzberger, Felix Pultar, and Professor Sereina Riniker in the Journal of Chemical Theory and Computation:
pubs.acs.org/doi/10.1021/...

04.08.2025 11:48 👍 1 🔁 0 💬 0 📌 0
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100 years of #quantum mechanics

#OnThisDay in 1925, in a letter to Wolfgang Pauli, Werner Heisenberg revealed his new ideas, which were to revolutionise physics.

Read more: home.cern/news/news/ph...

09.07.2025 13:55 👍 34 🔁 12 💬 1 📌 1
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Precision Spectroscopy Reaffirms Gap Between Theory and Experiment New physics may explain discrepant values for the ionization energy of a metastable state of helium.

(3/3) Read a summary in Viewpoint Physics: physics.aps.org/articles/v18...

Read the full article in Physical Review Letters: journals.aps.org/prl/abstract...

@apsphysics.bsky.social

01.07.2025 12:02 👍 0 🔁 0 💬 0 📌 0
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(2/3) The disagreement is puzzling because the calculations feature converged relativistic and quantum-electrodynamics corrections as well as finite-nuclear-size and nuclear-polarization effects.

01.07.2025 11:59 👍 0 🔁 0 💬 1 📌 0
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(1/3) In a series of high-precision experiments, Gloria Clausen and Professor Frédéric Merkt showed a 9 sigma discrepancy between theory and experiment in the ionization energy of the metastable triplet state of helium-3.

01.07.2025 11:59 👍 0 🔁 0 💬 1 📌 0

(2/2) Co-authors from IMPS @ethz.ch: Thomas Weymuth, Moritz Bensberg, Raphael T. Husistein, Mihael Erakovic and Marco Eckhoff and Professor Markus Reiher.

26.06.2025 12:50 👍 0 🔁 0 💬 0 📌 0

(1/2) "How to use quantum computers for biomolecular free energies" - Read the latest publication by a team of quantum researchers from @ucph.bsky.social, @mit.edu and @novonordisk.bsky.social and @ethz.ch - including these members of the Institute of Molecular Physical Science (IMPS) @ethz.ch :

26.06.2025 12:50 👍 0 🔁 0 💬 1 📌 0

Read about the TOL on the LinkedIn page of the Department of Chemistry and Applied Biosciences (D-CHAB): www.linkedin.com/posts/eth-d-...

13.06.2025 08:04 👍 0 🔁 0 💬 0 📌 0
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Efficient Multistate Free-Energy Calculations with QM/MM Accuracy Using Replica-Exchange Enveloping Distribution Sampling Calculating free-energy differences using molecular dynamics (MD) simulations is an important task in computational chemistry. In practice, the accuracy of the results is limited by model approximatio...

Read the latest article by DomenPregeljc, Ramon Hügli, and Professor Sereina Riniker about "Efficient Multistate Free-Energy Calculations with QM/MM Accuracy Using Replica-Exchange Enveloping Distribution Sampling":
pubs.acs.org/doi/10.1021/...

12.06.2025 14:39 👍 0 🔁 0 💬 0 📌 0
Exkursion der Klasse P2c an die ETH Zürich - Kreisschule Mittelgösgen Als wir, die Klasse P2c, am Dienstag, 20. Mai 2025 nach einer ca. 45-minütigen Reise mit Zug und Bus vorfreudig an der ETH Zürich ankamen, wurden wir von Professor Dr. Roland Riek empfangen und über d...

Hier geht es zum Bericht der begeisterten Klasse: www.ksmg.ch/nachricht-le...

10.06.2025 08:50 👍 0 🔁 0 💬 0 📌 0
Schulklasse auf Campus Hönggerberg

Schulklasse auf Campus Hönggerberg

Besuch der Kreisschule Mittelgösgen bei Professor Roland Riek und seiner Forschungsgruppe: Die Klasse P2c erhielt Einblick in den Alltag der Professor:innen, Forscher:innen und Student:innen an der ETH, durfte verschiedene Experimente im Labor durchführen und an einer Chemievorlesung teilnehmen.

10.06.2025 08:50 👍 0 🔁 0 💬 1 📌 0