Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures
Materials designed to undergo a phase transition at a prescribed temperature have been advanced as elements for controlling thermal flux. Such phase change materials can be used as components of reversible thermal diodes, or materials that favor heat flux in a preferred direction; however, a thoroug...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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American Chemical Society (ACS)
2017
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| Online Access: | http://hdl.handle.net/1721.1/107467 https://orcid.org/0000-0001-9353-7453 |
| _version_ | 1826198678370516992 |
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| author | Dorval Courchesne, Noemie-Manuelle Cantu, Victor Javier Hammond, Paula T Belcher, Angela M Steiner, Stephen A. |
| author2 | Massachusetts Institute of Technology. Department of Biological Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Biological Engineering Dorval Courchesne, Noemie-Manuelle Cantu, Victor Javier Hammond, Paula T Belcher, Angela M Steiner, Stephen A. |
| author_sort | Dorval Courchesne, Noemie-Manuelle |
| collection | MIT |
| description | Materials designed to undergo a phase transition at a prescribed temperature have been advanced as elements for controlling thermal flux. Such phase change materials can be used as components of reversible thermal diodes, or materials that favor heat flux in a preferred direction; however, a thorough mathematical analysis of such diodes is thus far absent from the literature. Herein, it is shown mathematically that the interface of a phase change material with a phase invariant one can function as a simple thermal diode. Design equations are derived for such phase change diodes, solving for the limits where the transition temperature falls within or outside of the temperature gradient across the device. Criteria are derived analytically for the choice of thermal conductivity of the invariant phase to maximize the rectification ratio. Finally, the model is applied to several experimental systems in the literature, providing bounds on observed performance. This model should aid in the development of materials capable of controlling heat flux. |
| first_indexed | 2024-09-23T11:08:26Z |
| format | Article |
| id | mit-1721.1/107467 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:08:26Z |
| publishDate | 2017 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1074672022-09-27T17:25:23Z Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures Dorval Courchesne, Noemie-Manuelle Cantu, Victor Javier Hammond, Paula T Belcher, Angela M Steiner, Stephen A. Massachusetts Institute of Technology. Department of Biological Engineering Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering Koch Institute for Integrative Cancer Research at MIT Hammond, Paula T. Dorval Courchesne, Noemie-Manuelle Steiner III, Stephen Alan Cantu, Victor Javier Hammond, Paula T Belcher, Angela M Materials designed to undergo a phase transition at a prescribed temperature have been advanced as elements for controlling thermal flux. Such phase change materials can be used as components of reversible thermal diodes, or materials that favor heat flux in a preferred direction; however, a thorough mathematical analysis of such diodes is thus far absent from the literature. Herein, it is shown mathematically that the interface of a phase change material with a phase invariant one can function as a simple thermal diode. Design equations are derived for such phase change diodes, solving for the limits where the transition temperature falls within or outside of the temperature gradient across the device. Criteria are derived analytically for the choice of thermal conductivity of the invariant phase to maximize the rectification ratio. Finally, the model is applied to several experimental systems in the literature, providing bounds on observed performance. This model should aid in the development of materials capable of controlling heat flux. MIT Energy Initiative (Eni-MIT Energy Fellowship) Natural Sciences and Engineering Research Council of Canada (Postgraduate Scholarship) 2017-03-17T16:09:03Z 2017-03-17T16:09:03Z 2015-07 2015-05 Article http://purl.org/eprint/type/JournalArticle 0897-4756 1520-5002 http://hdl.handle.net/1721.1/107467 Dorval Courchesne, Noémie-Manuelle et al. “Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures.” Chemistry of Materials 27.15 (2015): 5361–5370. https://orcid.org/0000-0001-9353-7453 en_US http://dx.doi.org/10.1021/acs.chemmater.5b01844 Chemistry of Materials Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Prof. Hammond via Erja Kajosalo |
| spellingShingle | Dorval Courchesne, Noemie-Manuelle Cantu, Victor Javier Hammond, Paula T Belcher, Angela M Steiner, Stephen A. Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures |
| title | Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures |
| title_full | Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures |
| title_fullStr | Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures |
| title_full_unstemmed | Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures |
| title_short | Biotemplated Silica and Silicon Materials as Building Blocks for Micro- to Nanostructures |
| title_sort | biotemplated silica and silicon materials as building blocks for micro to nanostructures |
| url | http://hdl.handle.net/1721.1/107467 https://orcid.org/0000-0001-9353-7453 |
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