The research of Nicole Guryanova, an 11-year-old student of Alabuga International School, has been published in the scientific journal for schoolchildren
Start in Science. The topic of her research paper is
Thermochemical paint: creation of paints capable of changing color once when the temperature rises and thus indicating the possible spoilage of medicines inside thermal containers.
During the project, Nicole conducted a study of color change temperatures of pigments based on inorganic salts of cobalt and nickel. So, in practice, under the guidance of science teacher Alexander Buldakov, the student developed thermal stickers that demonstrated irreversible color change at a single exceeding of a given temperature.
According to the Nicole's curator, such thermal stickers can be useful for monitoring the condition of various equipment and controlling the quality of transportation of medical products. In addition, they can work without power, are safe, quite cheap and easy to use - you just need to stick them on and watch the color.
The full research can be found via the following
link.