Heat dissipation and electrical conduction of an LED by using a microfluidic channel with a graphene solution

Chung, Yung-Chiang; Chung, Han-Hsuan; Lee, Yi-Hong; Yang, L. Y.

doi:10.1016/j.applthermaleng.2020.115383

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…High illumination light source can be obtained by combining multiple LED chips and concentrating the light through lenses or other light concentrating substances. This way has many problems with heat dissipation, large volume and poor effect, which makes the development of LED sources become progressively difficult in a microenvironment [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Investigation on characteristic of LED power density via tapered fiber

Jing

Zhang

et al. 2022

Mater. Res. Express

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In this paper, a tapered fiber for improving the power density of the Light Emitting Diode (LED) was designed. Numerical simulation showed that the tapered fiber makes the LED diverging light sources converge on the microscopic area, which makes the LED available for biomedical photonic imaging in the microenvironment. Based on the Monte Carlo Ray Tracing Method, we obtained the law of spot illumination and divergence angle when the light passes through the different parameters tapered fiber. In addition, the tapered fiber was designed as a spiral shape with steadily changing slope, and the effect of the

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Section: Introductionmentioning

confidence: 99%

Investigation on characteristic of LED power density via tapered fiber

Jing

Zhang

et al. 2022

Mater. Res. Express

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“…The stability and reliability of an electric apparatus may decrease by 10% when the temperature is increased by 2 °C [ 62 ]. In another investigation, a graphene solution was used as a liquid conductor for dissipating heat and transferring energy; the heat dissipation efficiency was excellent, but the optical power of an LED with a liquid conductor was lower than that of an LED with a solid conductor during the first 6 min, and the graphene solution was recycled manually [ 63 ]. According to the aforementioned study, the temperature of the LED using the liquid conductor was much lower than that of the LED using the solid conductor.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution

Chung

Lin

2021

Nanomaterials

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Electric devices have evolved to become smaller, more multifunctional, and increasingly integrated. When the total volume of a device is reduced, insufficient heat dissipation may result in device failure. A microfluidic channel with a graphene solution may replace solid conductors for simultaneously supplying energy and dissipating heat in a light emitting diode (LED). In this study, an automated recycling system using a graphene solution was designed that reduces the necessity of manual operation. The optical power and temperature of an LED using this system was measured for an extended period and compared with the performance of a solid conductor. The temperature difference of the LED bottom using the solid and liquid conductors reached 25 °C. The optical power of the LED using the liquid conductor was higher than that of the solid conductor after 120 min of LED operation. When the flow rate was increased, the temperature difference of the LED bottom between initial and 480 min was lower, and the optical power of the LED was higher. This result was attributable to the higher temperature of the LED with the solid conductor. Moreover, the optical/electric power transfer rate of the liquid conductor was higher than that of the solid conductor after 120 min of LED operation, and the difference increased over time.

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Liquid Cooling for High‐Heat‐Flux Electronic Devices

2024

Thermal Management for Opto‐electronics Packaging and Applications

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Heat dissipation and electrical conduction of an LED by using a microfluidic channel with a graphene solution

Cited by 9 publications

References 36 publications

Investigation on characteristic of LED power density via tapered fiber

Investigation on characteristic of LED power density via tapered fiber

Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution

Liquid Cooling for High‐Heat‐Flux Electronic Devices

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