Small droplet clusters have unusual symmetries absent from colloidal crystals and from large clusters. In our new paper, we discuss the hypothesis that the symmetries of small clusters may be related to an amazing mathematical object, the ADE-classification based on… Read More
Our new paper about clusters in physics, chemistry, and biology and their relation to networks. E Bormashenko, A. A. Fedorets, M. Frenkel, L. A. Dombrovsky and M. Nosonovsky. “Clustering and self-organization in small-scale natural and artificial systems”Phil. Trans. R. Soc…. Read More
In addition to the hexagonally ordered clusters of levitating micro-droplets, a cluster with a chain structure can exist. The first systematic observation of this new phenomenon is reported in our paper: A. A. Fedorets et al. “Self-arranged levitating droplet clusters:… Read More
Our new paper: A. A. Fedorets, N. E. Aktaev, D. N. Gabyshev, E. Bormashenko, L. A. Dombrovsky, M. Nosonovsky “Oscillatory Motion of a Droplet Cluster” J. Phys. Chem. C 2019 The work was done mostly by young Russian colleagues, Drs…. Read More
Our project “Theoretically based methods for generating and monitoring levitating droplet clusters and biochemical experiments in microreactor droplets” (19-19-00076), PI: Dr. A. Fedorets (University of Tyumen, Russia), coPIs: Drs. M. Nosonovsky (UWM), L. A. Dombrovsky (Moscow, RAS), E. Bormashenko (Ariel… Read More
A new paper by our international group: A. Fedorets, L. A. Dombrovsky, E. Bormashenko and M. Nosonovsky “On relative contribution of electrostatic and aerodynamic effects to dynamics of a levitating droplet cluster” Int. J. Heat Mass Transfer, 133 (2019) 712-717…. Read More
Our review paper about the Voronoi entropy. Bormashenko, E.; Frenkel, M.; Vilk, A.; Legchenkova, I.; Fedorets, A.A.; Aktaev, N.E.; Dombrovsky, L.A.; Nosonovsky, M. Characterization of Self-Assembled 2D Patterns with Voronoi Entropy. Entropy 2018, 20, 956. https://www.mdpi.com/1099-4300/20/12/956 The Voronoi entropy is… Read More
N. Aktaev, A. Fedorets, E. Bormashenko, M. Nosonvosky “Langevin Approach to Modeling of Small Levitating Ordered Droplet Clusters” J. Phys. Chem. Lett., 2018, 9, pp 3834–3838, (Impact Factor = 9.35) DOI: 10.1021/acs.jpclett.8b01693 The Table of Content image shows theoretical predictions… Read More
While writing about the ordered self-assembled levitating microdroplet clusters, I found that many people (including some reviewers in physics journals) tend to perceive the cluster by analogy with the Leidenfrost effect. In the Leidenfrost effect, a droplet, close to a… Read More
Our new paper in J. Phys. Chem Lett. (Impact factor = 9.35) deals with a new technique to create a levitating ordered cluster of any arbitrary small number of microdroplets. Before, only large and polydisperse clusters were created, so the… Read More
Water is known to form ordered hexagonally symmetric structures (such as snow crystals) in its solid state, however not as liquid or vapor. Typically, fogs and aerosols are composed of randomly moving small droplets lacking any ordered structure. Surprisingly, self-organized… Read More
Another interesting collaboration which I have during my sabbatical year (and it can continue after that) is with an unlikely place – Tyumen State University in Russia. Tyumen is a remote city in Siberia. Professor Alexander Fedorets from the TSU has discovered some 10 years ago an unusual effect: levitating clusters of microdroplets over a heated water surface. These droplets (similar to fog or mist) self-assemble into perfect hexagonal structures. Some scholars even consider it a new form of water (in addition to ice, vapor, liquid water, snow crystals, fog, etc.). Together with colleagues from Israel and Russia we are trying to better understand and explain this phenomenon. We have submitted a proposal for a research grant from the Russian Ministry of Science and Education and we are now waiting for the outcome.
Below is an amazing video of a droplet cluster by my colleagues and friends, Drs. A. Fedorets and L. Dombrovsky.