Highly Transparent Phase Change Smart Windows Enabled by Refractive-Index-Matched n-Octadecane@SiO 2 Microcapsule Composites.
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| Title: | Highly Transparent Phase Change Smart Windows Enabled by Refractive-Index-Matched n-Octadecane@SiO 2 Microcapsule Composites. |
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| Authors: | Yang, Fusen1 (AUTHOR), Zhang, Zhixing1,2 (AUTHOR), Feng, Yiyu1 (AUTHOR) fengyiyu@tju.edu.cn, Qin, Mengmeng1,2 (AUTHOR), Feng, Wei1,2 (AUTHOR) |
| Source: | Nanomaterials (2079-4991). Jun2026, Vol. 16 Issue 11, p648. 17p. |
| Subjects: | Microencapsulation, Refractive index, Heat storage, Transparency (Optics), Phase change materials, Octadecane |
| Abstract: | The development of phase change materials (PCMs) for window applications with both high optical transparency and effective temperature regulation is crucial for passive energy saving. However, liquid leakage during phase transition and enhanced interfacial light scattering often cause fluctuations in optical transmittance and deterioration of image clarity. To address these challenges, a highly transparent phase change composite was constructed via a microencapsulation strategy. Submicron core–shell microcapsules were fabricated using n-octadecane as the core and silica as the shell, enabling effective encapsulation of the liquid PCM component. The resulting microcapsules exhibited a high melting enthalpy of 155.3 J g−1. They were subsequently homogeneously dispersed within a refractive-index-matched polymer matrix, mitigating light scattering during phase transition by reducing interfacial refractive index mismatch. The composite exhibited favorable thermal energy storage capability and transmittance performance, with a visible light transmittance of 83.75% and a transmittance fluctuation of only ~5% before and after phase transition. After 100 thermal cycles, the optical attenuation remained as low as 0.35%, demonstrating excellent cycling stability. This work provides a new strategy for balancing optical transparency and phase change function, with potential applications in smart windows and flexible electronics. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 194587822 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Highly Transparent Phase Change Smart Windows Enabled by Refractive-Index-Matched n-Octadecane@SiO 2 Microcapsule Composites. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Fusen%22">Yang, Fusen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhixing%22">Zhang, Zhixing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Yiyu%22">Feng, Yiyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fengyiyu@tju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Qin%2C+Mengmeng%22">Qin, Mengmeng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Wei%22">Feng, Wei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jun2026, Vol. 16 Issue 11, p648. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Microencapsulation%22">Microencapsulation</searchLink><br /><searchLink fieldCode="DE" term="%22Refractive+index%22">Refractive index</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+storage%22">Heat storage</searchLink><br /><searchLink fieldCode="DE" term="%22Transparency+%28Optics%29%22">Transparency (Optics)</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+change+materials%22">Phase change materials</searchLink><br /><searchLink fieldCode="DE" term="%22Octadecane%22">Octadecane</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The development of phase change materials (PCMs) for window applications with both high optical transparency and effective temperature regulation is crucial for passive energy saving. However, liquid leakage during phase transition and enhanced interfacial light scattering often cause fluctuations in optical transmittance and deterioration of image clarity. To address these challenges, a highly transparent phase change composite was constructed via a microencapsulation strategy. Submicron core–shell microcapsules were fabricated using n-octadecane as the core and silica as the shell, enabling effective encapsulation of the liquid PCM component. The resulting microcapsules exhibited a high melting enthalpy of 155.3 J g−1. They were subsequently homogeneously dispersed within a refractive-index-matched polymer matrix, mitigating light scattering during phase transition by reducing interfacial refractive index mismatch. The composite exhibited favorable thermal energy storage capability and transmittance performance, with a visible light transmittance of 83.75% and a transmittance fluctuation of only ~5% before and after phase transition. After 100 thermal cycles, the optical attenuation remained as low as 0.35%, demonstrating excellent cycling stability. This work provides a new strategy for balancing optical transparency and phase change function, with potential applications in smart windows and flexible electronics. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/nano16110648 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 648 Subjects: – SubjectFull: Microencapsulation Type: general – SubjectFull: Refractive index Type: general – SubjectFull: Heat storage Type: general – SubjectFull: Transparency (Optics) Type: general – SubjectFull: Phase change materials Type: general – SubjectFull: Octadecane Type: general Titles: – TitleFull: Highly Transparent Phase Change Smart Windows Enabled by Refractive-Index-Matched n-Octadecane@SiO 2 Microcapsule Composites. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Fusen – PersonEntity: Name: NameFull: Zhang, Zhixing – PersonEntity: Name: NameFull: Feng, Yiyu – PersonEntity: Name: NameFull: Qin, Mengmeng – PersonEntity: Name: NameFull: Feng, Wei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20794991 Numbering: – Type: volume Value: 16 – Type: issue Value: 11 Titles: – TitleFull: Nanomaterials (2079-4991) Type: main |
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