Can we freeze a soap bubble ?

Inspired by short online videos, in which we could enjoy the magnificent spectacle of soap bubbles freezing in cold places like Canada, we asked ourselves this question: Can we make a soap bubble freeze? The answer is yes, of course but in Laval, France, where temperatures rarely drop below 0°C this is far less obvious. We imagined and gradually set up experimental devices to observe this phenomenon in good conditions, which led us to answer many other questions. After two years of research, our current device allows us to observe the freezing of bubbles, to admire their beauty but also to begin studying their physics. This work promises to be all the more motivating as only one team of American researchers carried out such a study. We are regularly in touch with one of its members.