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Scientists describe most accurate quantum thermometers
Spanish scientists have calculated how a thermometer can be made as accurately as possible by making use of quantum mechanics. An accurate thermometer can be used, inter alia, in medical and physics research.
The research is published in the leading physics journal Physical Review Letters, was conducted by scientists at a university in Barcelona. They describe a quantum system that can measure minute fluctuations in temperature. According to calculations, is a quantum thermometer of an individual atom is most accurately at the highest possible heat capacity. The energy levels and number of quantum states of the most accurate quantum thermometer could be calculated.
It also appears that the degree of accuracy of the quantum thermometer is inversely proportional to the temperature range in which it can operate. This means that the more accurate is a thermometer, the smaller the temperature interval in which the device operates. Therefore, the researchers recommend to first take a thermometer with a lower accuracy in order to determine the temperature range, and then to use only a more accurate model.
By the calculations of the Spanish scientists can be improved quantum thermometers. Accurate thermometers can be used in various research fields. For example, quantum thermometers already used for the measurement of temperature in the cells, but can also, for example, temperature trends are measured in nano-devices.Viewing:-191
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