Recently, the study of power consumption and heat dissipation has attracted considerable research interest due to the development of various electric products. In this research, the authors replaced the solid conducting wire with a microfluidic channel and an electrolyte to conduct electricity and dissipate heat in a light-emitting diode (LED). The optical power and temperature of the LED using three electrolytes including salt (NaCl), sodium bicarbonate, and citric acid were measured. The measured optical power was the highest when NaCl was used as the electrolyte. The temperatures of the LED and at the bottom of the microfluidic channel were much lower when a liquid conductor was used as compared to when a solid conducting wire was used. The optical power of the LED obtained using a solid conducting wire was higher than that obtained using a liquid conductor. The temperature decreased and optical power increased with increasing flow rate. They hypothesised that a liquid conductor with a lower electric resistance would improve the optical power of the LED.

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Design and application of an LED using a liquid conductor for dissipating heat and conducting electricity

References

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