Issue 30, 2024

Observation of a chemical reaction in a levitating microdroplet cluster and droplet-generated music

Abstract

Ordered clusters of water droplets levitating over a heated water surface can be used as chemical microreactors and computational devices. Here we show that a chemical reaction between melamine and cyanuric acid can occur during coalescence of pairs of droplets containing these reagents and lead to the sedimentation of the product, crystals of melamine cyanurate. In rotating droplets, the crystals flash with frequencies dependent mostly on the rotational velocity of the droplets defined by the rotor of the velocity field of the air–vapor flow above the heated water surface. With the Machine Learning (ML) approach, we trace the brightness and frequencies of individual crystals and convert the frequencies into musical notes thus making a “micro-orchestra” of the levitation cluster.

Graphical abstract: Observation of a chemical reaction in a levitating microdroplet cluster and droplet-generated music

Supplementary files

Article information

Article type
Edge Article
Submitted
10 Mai 2024
Accepted
26 Jun 2024
First published
27 Jun 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2024,15, 12067-12076

Observation of a chemical reaction in a levitating microdroplet cluster and droplet-generated music

A. A. Fedorets, S. Koltsov, A. A. Muravev, A. Fotin, P. Zun, N. Orekhov, M. Nosonovsky and E. V. Skorb, Chem. Sci., 2024, 15, 12067 DOI: 10.1039/D4SC03066D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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