Fig. 6: Temporal resolution and sensitivity. | Nature Communications

Fig. 6: Temporal resolution and sensitivity.

From: Unprecedented switching endurance affords for high-resolution surface temperature mapping using a spin-crossover film

Fig. 6

a Time evolution of the optical reflectivity (ΔR/R) measured on a SCO-coated gold microwire (1 mm × 8 µm × 300 nm) at two selected base temperatures, Tb = 55 °C and Tb = 25 °C, following the injection of sharp 10, 50, and 100-µs-long current pulses (32 mA). At 55 °C (close to the spin-transition temperature) the reflectivity change is amplified by the SCO phenomenon, while the measurements at 25 °C depict the ordinary thermoreflectance. b Temperature maps (ΔT) deduced from the ΔR/R images at Tb = 55 °C at selected times, following a 50-µs-long current pulse. Scale bar, 40 µm. c Time evolution of the average temperature rise of the wire measured by our SCO-based thermometer. Solid lines correspond to the temperature profiles deduced from time-resolved electrical resistance measurements.

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