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Fig. 6 | BioMedical Engineering OnLine

Fig. 6

From: A current-mode system to self-measure temperature on implantable optoelectronics

Fig. 6

a Developed non-human primate experimental set-up with an inserted optrode into brain tissue. A blue LED has been bonded on the optrode shaft; b extracted surface temperature variation during the sensing phase after driving the LED with 2 mA and 4 mA currents for a minute to have optical stimulation. The LED reverse current is measured after switching the LED to reverse bias while cooling down. The temperature data are extracted by applying the calibration method to the measured current and junction temperature

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