New Delhi, May 10: An ultra-sensitive quantum thermometer from Graphene Quantum Dots (GQDs) array has been developed by the researchers at Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia (JMI). The researchers told that having a quick response time, the thermometer can measure very minute changes in temperature. It is capable of registering a change in temperature from 27 degrees C to -196 degrees C in 300 milliseconds owing to its high sensitivity, a statement from the Central Varsity stated. The thermometer has been developed by a team of researchers led by the Director of the Centre Prof. S.S. Islam.
Commenting on the work, Prof Islam said, “We could not test the device below 12K due to the limitation of the experimental setup, but by looking at the sensor parameters, this device can be expected to work in sub- 0K temperatures as well.”
Thermometer shows extremely quick response
The thermometer shows an exceptionally quick response of only nearly 300 milliseconds for registering a temperature change. Also, it can return to its original temperature value in just nearly 800 milliseconds, a statement from Jamia said. It added that the results of the study are published in Nanoscale Advances, the world-famous journal.
“The device can find widespread applications in cryogenic temperature sensing. It performs remarkably well even in high-temperature window as well. Owing to its high sensitivity, the device can provide highly accurate temperature measurements. In its miniaturized form, the device can be used as a thermometer in challenging environments such as living cells or microfluidic circuits,” the official statement states.
The quantum thermometer is in the research phase as of now. Poonam Sehrawat and Abid, who are a part of the team, are trying to make this thermometer ready to be used in the electronic devices as on-chip thermometers that do not require calibrations due to their linear sensitivity plot in both cryogenic and high-temperature ranges.
About Jamia Millia Islamia
JMI, originally set up at Aligarh in United Provinces, India in 1920, became a Central University by an act of the Indian Parliament in the year 1988. It offers integrated education beginning from nursery to research in specialized areas.