科研之友
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摘要
The effect of the nonlinear time-drift gain in the power amplifier on the instability in a magnetic nanothermometer was studied to allow a very stable magnetic nanotermometer to be designed, which was then used to measure the temperature of a light-emitting diode pn-junction. Experiments showed that the system response fluctuated by less than 0.04% and the temperature measurement error was less than 0.1 K when real-time measurements were made at 1 s intervals. The temperature of a pn-junction of a light-emitting diode cooled using a heat sink or circulating water was measured successfully using the improved magnetic nanothermometer.
