Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties
Negative thermal expansion is an interesting and appealing phenomenon for various scientific and engineering applications, while rarely occurring in natural materials. Here, using a universal antichiral metamaterial model with bimetal beams or strips, a generic theory has been developed to predict m...
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| Format: | Article |
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MDPI AG
2020-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/9/2139 |
| _version_ | 1797568786303287296 |
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| author | Debajyoti Saha Paul Glanville Eduard G. Karpov |
| author_facet | Debajyoti Saha Paul Glanville Eduard G. Karpov |
| author_sort | Debajyoti Saha |
| collection | DOAJ |
| description | Negative thermal expansion is an interesting and appealing phenomenon for various scientific and engineering applications, while rarely occurring in natural materials. Here, using a universal antichiral metamaterial model with bimetal beams or strips, a generic theory has been developed to predict magnitude of the negative thermal expansion effect from model parameters. Thermal expansivity of the metamaterial is written as an explicit function of temperature and only three design parameters: relative node size, chirality angle, and a bimetal constant. Experimental measurements follow theoretical predictions well, where thermal expansivity in the range of negative 0.0006–0.0041 °C<sup>−1</sup> has been seen. |
| first_indexed | 2024-03-10T20:02:02Z |
| format | Article |
| id | doaj.art-fbaaac683d464370bd96f038a309a362 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T20:02:02Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-fbaaac683d464370bd96f038a309a3622023-11-19T23:33:47ZengMDPI AGMaterials1996-19442020-05-01139213910.3390/ma13092139Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion PropertiesDebajyoti Saha0Paul Glanville1Eduard G. Karpov2Department Civil and Materials Engineering, University of Illinois, Chicago, IL 60607, USAGas Technology Institute, Des Plaines, IL 60018, USADepartment Civil and Materials Engineering, University of Illinois, Chicago, IL 60607, USANegative thermal expansion is an interesting and appealing phenomenon for various scientific and engineering applications, while rarely occurring in natural materials. Here, using a universal antichiral metamaterial model with bimetal beams or strips, a generic theory has been developed to predict magnitude of the negative thermal expansion effect from model parameters. Thermal expansivity of the metamaterial is written as an explicit function of temperature and only three design parameters: relative node size, chirality angle, and a bimetal constant. Experimental measurements follow theoretical predictions well, where thermal expansivity in the range of negative 0.0006–0.0041 °C<sup>−1</sup> has been seen.https://www.mdpi.com/1996-1944/13/9/2139thermomechanical metamaterialmechanical metamaterialnegative thermal expansionnegative expansivityarchitectured materialbimetal strip |
| spellingShingle | Debajyoti Saha Paul Glanville Eduard G. Karpov Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties Materials thermomechanical metamaterial mechanical metamaterial negative thermal expansion negative expansivity architectured material bimetal strip |
| title | Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties |
| title_full | Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties |
| title_fullStr | Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties |
| title_full_unstemmed | Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties |
| title_short | Analysis of Antichiral Thermomechanical Metamaterials with Continuous Negative Thermal Expansion Properties |
| title_sort | analysis of antichiral thermomechanical metamaterials with continuous negative thermal expansion properties |
| topic | thermomechanical metamaterial mechanical metamaterial negative thermal expansion negative expansivity architectured material bimetal strip |
| url | https://www.mdpi.com/1996-1944/13/9/2139 |
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