Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions
Reversible temperature tuning of electrical and thermal conductivities of materials is of interest for many applications, including seasonal regulation of building temperature, thermal storage and sensors. Here we introduce a general strategy to achieve large contrasts in electrical and thermal cond...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2013
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| Online Access: | http://hdl.handle.net/1721.1/82586 https://orcid.org/0000-0001-9954-6895 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1826205957113249792 |
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| author | Zheng, Ruiting Gao, Jinwei Wang, Jianjian Chen, Gang |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Zheng, Ruiting Gao, Jinwei Wang, Jianjian Chen, Gang |
| author_sort | Zheng, Ruiting |
| collection | MIT |
| description | Reversible temperature tuning of electrical and thermal conductivities of materials is of interest for many applications, including seasonal regulation of building temperature, thermal storage and sensors. Here we introduce a general strategy to achieve large contrasts in electrical and thermal conductivities using first-order phase transitions in percolated composite materials. Internal stress generated during a phase transition modulates the electrical and thermal contact resistances, leading to large contrasts in the electrical and thermal conductivities at the phase transition temperature. With graphite/hexadecane suspensions, the electrical conductivity changes 2 orders of magnitude and the thermal conductivity varies up to 3.2 times near 18 °C. The generality of the approach is also demonstrated in other materials such as graphite/water and carbon nanotube/hexadecane suspensions. |
| first_indexed | 2024-09-23T13:21:44Z |
| format | Article |
| id | mit-1721.1/82586 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:21:44Z |
| publishDate | 2013 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/825862022-09-28T13:40:03Z Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions Zheng, Ruiting Gao, Jinwei Wang, Jianjian Chen, Gang Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Jianjian Chen, Gang Zheng, Ruiting Gao, Jinwei Reversible temperature tuning of electrical and thermal conductivities of materials is of interest for many applications, including seasonal regulation of building temperature, thermal storage and sensors. Here we introduce a general strategy to achieve large contrasts in electrical and thermal conductivities using first-order phase transitions in percolated composite materials. Internal stress generated during a phase transition modulates the electrical and thermal contact resistances, leading to large contrasts in the electrical and thermal conductivities at the phase transition temperature. With graphite/hexadecane suspensions, the electrical conductivity changes 2 orders of magnitude and the thermal conductivity varies up to 3.2 times near 18 °C. The generality of the approach is also demonstrated in other materials such as graphite/water and carbon nanotube/hexadecane suspensions. National Science Foundation (U.S.) (Grant CBET-0755825) National Science Foundation (U.S.) (Grant CTS-0506830) 2013-11-25T19:35:33Z 2013-11-25T19:35:33Z 2011-04 2012-12 Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/82586 Zheng, Ruiting, Jinwei Gao, Jianjian Wang, and Gang Chen. “Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions.” Nature Communications 2 (April 19, 2011): 289. © 2011 Nature Publishing Group, a division of Macmillan Publishers Limited https://orcid.org/0000-0001-9954-6895 https://orcid.org/0000-0002-3968-8530 en_US http://dx.doi.org/10.1038/ncomms1288 Nature Communications http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Nature Publishing Group PMC |
| spellingShingle | Zheng, Ruiting Gao, Jinwei Wang, Jianjian Chen, Gang Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions |
| title | Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions |
| title_full | Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions |
| title_fullStr | Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions |
| title_full_unstemmed | Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions |
| title_short | Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitions |
| title_sort | reversible temperature regulation of electrical and thermal conductivity using liquid solid phase transitions |
| url | http://hdl.handle.net/1721.1/82586 https://orcid.org/0000-0001-9954-6895 https://orcid.org/0000-0002-3968-8530 |
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