Posts in category Ice Nucleation

Two Open Positions for Postdocs as part of the HeteroIce Project

The ICE group currently have two open positions for postdoctoral researchers. The positions are part of the ERC HeteroIce project aimed at understanding ice nucleation. Click here to apply or find out more information.

Martin’s paper published in Nature Commuications

Martin’s paper together with Gabriele, Fabio, Silvio and Angelos has been published in Nature Communications!

In this paper we investigate pre-critical fluctuations and what they can tell us about the heterogeneous nucleation event. Pre-critical fluctuations are the earliest occurrences of crystalline clusters in a supercooled liquid and thus readily probed in simulations such as molecular dynamics. We find that they can tell us which polymorph will form but they are not trivially indicative (as often assumed) of the nucleation enhancement. This also means that the commonly applied heterogeneous classical nucleation theory makes an error when comparing heterogeneous and homogeneous nucleation events where different polymorphs have formed. As a side, in this work we also find a simple recipe of avoiding stacking-disorder in hetergeneous ice nucleation during the nucleation stage.

Read the paper online or on our publications page.

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Philipp’s and Martin’s paper published in PRB!

Philipp’s and Martin’s paper was published in Physical Review B! In this article they computed the ice nucleation ability of numerous model hydroxylated substrates with diverse OH group arrangements. For the substrates considered, they find that neither the symmetry of the OH patterns nor the similarity between a substrate and ice correlate well with the IN ability. Instead, they find that the OH density and the substrate-water interaction strength are useful descriptors of a material’s IN ability. This insight allows the rationalization of ice nucleation ability across a wide range of materials, and can aid the search and design of novel potent ice nucleators in the future. Check out the article online or on our publications page.

News

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INCITE grant awarded for quantum Monte Carlo project!

The proposal titled “New Frontiers for Material Modeling via Machine Learning Techniques with Quantum Monte Carlo” was awarded a 2019 Innovative and Novel Computational Impact on Theory and Experiment (INCITE) grant by the U.S. Department of Energy’s Office of Science. The project lead by Dario Alfè and in collaboration with Gábor Csányi in Cambridge involves […]

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Welcome new ICE group members!

We are happy to welcome some new people who joined the group over the last few weeks. Tai is doing a postdoc in a joint UCL – BP project. Fabian is sharing his PhD time between UCL and Imperial College. Michael already did his Master project in our group and is now continuing his work […]

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Martin finished his viva!

Congratulations to Martin, who finished his viva last week! His work focused on ice nucleation, in particular on finding descriptors that indicate good ice nucleating agents and the role of dynamical heterogeneity in homogeneous ice nucleation.

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The ICE group survived Hever!

Yesterday morning’s adverse weather conditions (to put it mildly) made the triathlon even more challenging. The swimmers had to cope with very cold water, the hilly bike track was dangerously slippery and the running track was mostly covered in mud. Undeterred, both teams completed the triathlon – soaking wet (even the ones that didn’t swim!) […]

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Single-atom alloy Perspective made it onto the JPCL cover!

The next issue of The Journal of Physical Chemistry Letters will feature cover art from the perspective article ‘Lonely Atoms with Special Gifts: Breaking Linear Scaling Relationships in Heterogeneous Catalysis with Single-Atom Alloys’ by Matthew T. Darby, Michail Stamatakis, Angelos Michaelides, and E. Charles H. Sykes. The cover depicts the atomic structure of a so-called […]

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The ICE group is Triathlon-ing for WaterAid again!

After last year’s phenomenal victory, the ICE group is participating for the second time in the Hever Castle Triathlon. This year, there will be two relay teams: Phil, Gabriele, and Angelos will compete again in the half-ironman, while Andrea, his wife Sara, and Patrick will compete over the Olympic distance. The ICE group is not only trying […]

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Open Postdoc position

A position for a Research Associate in Computational Catalysis is now open. The project about methane activation at single atom alloys involves collaboration with Dr Michail Stamatakis and Prof. Charlie Sykes. To find out more or to apply, click here.

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Welcome Sam and Piero!

The ICE group is happy to welcome Sam Azadi and Piero Gasparotto, who joined us last month. The weather appeared eager to welcome them warmly as well, and we hope their time here will be as enjoyable and successful as the first month promised it to be.

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Michael wins prize for his Final Year MSci presentation!

Michael won a prize for the Best Final Year MSci presentation in the Condensed Matter and Materials Physics (CMMP) group for his project on ice nucleation titled “Achieving Cubic Ice”. Congratulations!

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2 PhD positions available

Two PhD positions are available in the ICE group. The projects are aimed at applying and developing computer simulation approaches to better understand the formation of ice.

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Group gatherings