Cargando…
Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution
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 simultaneousl...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8308142/ https://www.ncbi.nlm.nih.gov/pubmed/34209913 http://dx.doi.org/10.3390/nano11071719 |
_version_ | 1783728210588991488 |
---|---|
author | Chung, Yung-Chiang Chung, Han-Hsuan Lin, Shih-Hao |
author_facet | Chung, Yung-Chiang Chung, Han-Hsuan Lin, Shih-Hao |
author_sort | Chung, Yung-Chiang |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-8308142 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-83081422021-07-25 Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution Chung, Yung-Chiang Chung, Han-Hsuan Lin, Shih-Hao Nanomaterials (Basel) Article 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. MDPI 2021-06-29 /pmc/articles/PMC8308142/ /pubmed/34209913 http://dx.doi.org/10.3390/nano11071719 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chung, Yung-Chiang Chung, Han-Hsuan Lin, Shih-Hao Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution |
title | Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution |
title_full | Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution |
title_fullStr | Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution |
title_full_unstemmed | Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution |
title_short | Improvement of Temperature and Optical Power of an LED by Using Microfluidic Circulating System of Graphene Solution |
title_sort | improvement of temperature and optical power of an led by using microfluidic circulating system of graphene solution |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8308142/ https://www.ncbi.nlm.nih.gov/pubmed/34209913 http://dx.doi.org/10.3390/nano11071719 |
work_keys_str_mv | AT chungyungchiang improvementoftemperatureandopticalpowerofanledbyusingmicrofluidiccirculatingsystemofgraphenesolution AT chunghanhsuan improvementoftemperatureandopticalpowerofanledbyusingmicrofluidiccirculatingsystemofgraphenesolution AT linshihhao improvementoftemperatureandopticalpowerofanledbyusingmicrofluidiccirculatingsystemofgraphenesolution |