Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids
Abstract Nucleate boiling enables effective cooling and heat transfer at low temperature differences between a heated surface and the surrounding fluid. It is utilized in many applications, ranging from large power plants to small microelectronics. To enhance the boiling process by minimization of t...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2018-05-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-018-25843-5 |
| _version_ | 1818344052909670400 |
|---|---|
| author | Peter Gregorčič Matevž Zupančič Iztok Golobič |
| author_facet | Peter Gregorčič Matevž Zupančič Iztok Golobič |
| author_sort | Peter Gregorčič |
| collection | DOAJ |
| description | Abstract Nucleate boiling enables effective cooling and heat transfer at low temperature differences between a heated surface and the surrounding fluid. It is utilized in many applications, ranging from large power plants to small microelectronics. To enhance the boiling process by minimization of the surface temperature and increase the maximum attainable heat flux, several approaches for surface modifications were recently developed. However, each of them has at least one important drawback, including challenging and expensive production, mechanical and/or thermal instability or problematic scale-up. Herein, a straightforward, robust and flexible method using a nanosecond fiber laser for production of surfaces with multi-scale micro-cavities (with diameters ranging from 0.2 to 10 μm) is developed. Examination of these surfaces in two very contrasting fluids - water, which is polar, has high surface tension and high latent heat of vaporization; and non-polar, dielectric tetradecafluorohexane (FC-72) with low surface tension and much lower latent heat - confirms that such surfaces enable enhanced heat transfer and controlled boiling in combination with diverse fluids. This demonstration suggests that the developed method has the potential to overcome the current limitations for further miniaturization of microelectronic devices and to increase performance and safety in high heat flux systems. |
| first_indexed | 2024-12-13T16:40:21Z |
| format | Article |
| id | doaj.art-08e9744731e64d9fab711b95936b699a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-13T16:40:21Z |
| publishDate | 2018-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-08e9744731e64d9fab711b95936b699a2022-12-21T23:38:18ZengNature PortfolioScientific Reports2045-23222018-05-01811810.1038/s41598-018-25843-5Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension FluidsPeter Gregorčič0Matevž Zupančič1Iztok Golobič2University of Ljubljana, Faculty of Mechanical EngineeringUniversity of Ljubljana, Faculty of Mechanical EngineeringUniversity of Ljubljana, Faculty of Mechanical EngineeringAbstract Nucleate boiling enables effective cooling and heat transfer at low temperature differences between a heated surface and the surrounding fluid. It is utilized in many applications, ranging from large power plants to small microelectronics. To enhance the boiling process by minimization of the surface temperature and increase the maximum attainable heat flux, several approaches for surface modifications were recently developed. However, each of them has at least one important drawback, including challenging and expensive production, mechanical and/or thermal instability or problematic scale-up. Herein, a straightforward, robust and flexible method using a nanosecond fiber laser for production of surfaces with multi-scale micro-cavities (with diameters ranging from 0.2 to 10 μm) is developed. Examination of these surfaces in two very contrasting fluids - water, which is polar, has high surface tension and high latent heat of vaporization; and non-polar, dielectric tetradecafluorohexane (FC-72) with low surface tension and much lower latent heat - confirms that such surfaces enable enhanced heat transfer and controlled boiling in combination with diverse fluids. This demonstration suggests that the developed method has the potential to overcome the current limitations for further miniaturization of microelectronic devices and to increase performance and safety in high heat flux systems.https://doi.org/10.1038/s41598-018-25843-5 |
| spellingShingle | Peter Gregorčič Matevž Zupančič Iztok Golobič Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids Scientific Reports |
| title | Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids |
| title_full | Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids |
| title_fullStr | Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids |
| title_full_unstemmed | Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids |
| title_short | Scalable Surface Microstructuring by a Fiber Laser for Controlled Nucleate Boiling Performance of High- and Low-Surface-Tension Fluids |
| title_sort | scalable surface microstructuring by a fiber laser for controlled nucleate boiling performance of high and low surface tension fluids |
| url | https://doi.org/10.1038/s41598-018-25843-5 |
| work_keys_str_mv | AT petergregorcic scalablesurfacemicrostructuringbyafiberlaserforcontrollednucleateboilingperformanceofhighandlowsurfacetensionfluids AT matevzzupancic scalablesurfacemicrostructuringbyafiberlaserforcontrollednucleateboilingperformanceofhighandlowsurfacetensionfluids AT iztokgolobic scalablesurfacemicrostructuringbyafiberlaserforcontrollednucleateboilingperformanceofhighandlowsurfacetensionfluids |