👏Big congrats, Quinten!

👏Big congrats, Sascha and team! @feldmannlab.bsky.social

May this indeed serve the existing #nanocrystal community and all those who want to join the effort. To the next decade of #nanoscience with these exciting and impactful tiny particles. Big 🙏 to Maria Ibáñez + team, Maksym Kovalenko, and all the many great co-authors.

More exciting talks by early-career scientists in #MatChem 's afternoon session at SCS #fm25:
Isabelle Kolly (Uni Bern), Jikson Pulparayil Mathew (Uni Basel), Valentin-Răzvan Lupu (ETH Zurich/Empa Dübendorf), Victoria Lohmann (ETH Zurich), Janek Nathanael Tangermann (Uni Geneva).

Lively discussions at the #materials #chemistry poster session at today's SCS Fall Meeting in Zürich.
#fm25
#earlycareer
@swisschemistry.bsky.social

Prof. Maksym Yarema (ETH Zürich) taking us on a quick dive into the huge and beautiful world of metallic and intermetallic #nanocrystals. These tiny particles can be prepared in a highly uniform fashion and utilized in a wide range of applications.
#fm25
@swisschemistry.bsky.social

Dr. Till Schertenleib, one of our two SCS MatChem PhD Award winners giving us a glimpse into his award-winning doctoral work at the group of Wendy Lee Queen (EPFL Lausanne). Congrats, Till, and all the best for your bright academic future!
@tillschertenleib.bsky.social
@swisschemistry.bsky.social

Right now, Prof. Marco Lattuada (Uni Fribourg) is kicking off the #materials #chemistry parallel session at the SCS Fall Meeting in Zürich, chaired by Prof. Maksym Yarema.
We are seeing beautiful colloidal handles to engineering colors for diverse applications.
#fm25
@swisschemistry.bsky.social

Energy-Degenerate Photon-Pair Generation from Individual CsPbBr3 Quantum Dots Beyond single-photon emission, generating correlated N-photon bundles, e.g., a photon pair, is essential for various quantum technologies including quantum teleportation and metrology. A widely explored approach exploits the radiative biexciton cascade in individual (mainly epitaxially grown) quantum dots (QDs). Here, we investigate such a cascade in colloidal CsPbBr3 QDs, a scalable and solution-processable quantum-light emitter. By matching their size-dependent biexciton binding energies to their size-independent phonon energies, we demonstrate the generation of time-correlated and energy-degenerate photon pairs in large (>15 nm) QDs. Under pulsed excitation at 4 K, we observe pronounced photon bunching, with a g(2)(0) of up to 7 in Hanbury Brown and Twiss measurements. The excitation-density-dependent bunching is quantitatively reproduced by multicolor numerical calculations, suggesting the cascade involving biexciton and phonon-mediated exciton decay as origin of the photon pair. Our findings provide new insights into energy-degenerate photon-pair generation in these highly engineerable quantum-light emitters, marking important steps toward their application in quantum-information technologies.

Another paper form our team, advancing novel quantum light sources. Single Perovksite QDs can produce not only single photons on demand, but also degenerate photon pairs.
pubs.acs.org/doi/10.1021/...

📆15 July. Please spread the word.

A week ago, we concluded our Swiss Summer School on Materials Chemistry 2025. Here the group photo. Thanks to all participants and speakers for the productive hands-on study sessions & Prof. Jonathan De Roo and @spichiger.bsky.social from @swisschemistry.bsky.social for the organization!
#matsem25

Next up is Dr. Stefan Canossa (ETH Zürich) on uncovering order and disorder in MOFs from single-crystal total scattering. Didactically brilliant, scientifically exciting, aesthetically pleasing, and thought-provoking. @stecanossa.bsky.social

A full room at our 2nd SCS MatChem Symposium in Fribourg, just kicked off by the meeting chair Dr. Andrea Dodero (AMI Fribourg). Prof. Wendy Queen (EPFL) is now diving into how MOFs can contribute to various UN #sdg goals. Looking forward to many more #materials #chemistry talks and posters today.

Starting the day with an inspiring view from the seminar location (Le Domaine Notre-Dame de la Route in Villars-sur-Glâne, Fribourg)

Prof. Federica Bertolotti giving away some tipps and tricks for advanced analysis using the DebUsSy suite for X-ray total scattering.

The SCS #Summer #School on #Materials #Chemistry 2025 is in full swing. Inspiring location (Fribourg). Informative lectures. And engaging hands-on sessions with various X-ray total scattering analysis tools for advanced materials characterization
#matsem25
matsem25.scg.ch
@swisschemistry.bsky.social

Thanks to my team of the lab of @maksymuki.bsky.social (Rui Tao, Yuliia Berezovska, and Benjamin Aymoz) and to Julia Ecker from DCHAB for the great organization.

Single-photon superabsorption in CsPbBr3 perovskite quantum dots - Nature Photonics Greatly enhanced light absorption is reported in large perovskite quantum dots by realizing a transition with a giant oscillator strength at the optical bandgap.

Our team has again demonstrated the uniqueness of perovskite QDs, now in the absorption of light (echoing the previously reported single-photon superradiance).
www.nature.com/articles/s41...

This week, 40 high-school students visited our #KovalenkoLab during the #DayOfOpenLabs (TOL) of the Department of Chemistry and Applied Bioscience at @ethz.ch. Lots of #chemistry fun with #nano #torches (bright #perovskite #nanocrystals) and for many a first glimpse into university life.

📢PhD Award Alert! 🏆
Dear PhD advisors: did your student(s) recently (Jan 2024 - May 2025) defend their thesis in Switzerland in #materials #chemistry ? Then please consider nominating them for our SCS MatChem PhD Student Award, by 15 July: scg.ch/scg-news/new...
@swisschemistry.bsky.social

Good news:
the poster submission deadline has just been extended to 2 June! 📆
Feel free to share. And see you on 25 June in Fribourg!
mat25.scg.ch/registration

📢 Indeed, also international participants are very much invited to join us in beautiful Fribourg to talk #materials #chemistry on 25 June!
🏃But be quick and register by 📆12 May (poster abstract submission deadline) or the very latest 📆2 June (without presentation). And please, repost🙏
mat25.scg.ch

📢Junior researchers in #materials #chemistry: last chance to secure your spot and learn essential #X-ray total scattering and PDF analysis techniques - 📆deadline now extented to 12 May. matsem25.scg.ch

Great chance to obtain some hands-on knowledge in X-ray total scattering tools. Same deadline (28 June) as the symposium. So be quick to register.

Make sure you register in the next 10 days!👇