Energy-Efficient Liquid Crystal Smart Window with a Clear View
In this study, we enhance the angular-selective light absorption capabilities of guest–host liquid crystal (GHLC) cells by introducing a novel design featuring a uniform lying helix (ULH) structure. Previously GHLC cells, predominantly vertically aligned cells absorbed obliquely incident light but c...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/10/1464 |
| _version_ | 1797574192277749760 |
|---|---|
| author | Chan-Heon An Tae-Hoon Choi Seung-Won Oh |
| author_facet | Chan-Heon An Tae-Hoon Choi Seung-Won Oh |
| author_sort | Chan-Heon An |
| collection | DOAJ |
| description | In this study, we enhance the angular-selective light absorption capabilities of guest–host liquid crystal (GHLC) cells by introducing a novel design featuring a uniform lying helix (ULH) structure. Previously GHLC cells, predominantly vertically aligned cells absorbed obliquely incident light but compromised <i>x</i>-direction visibility. In stark contrast, our ULH-based design allows incident light to seamlessly traverse transmittance in both <i>z</i>- and <i>x</i>-directions while efficiently obstructing oblique incident light in the <i>y</i>-direction. Our innovative ULH-based GHLC cell achieves an impressive optical performance. Specifically, it attains a substantial transmittance rate of 56.7% in the <i>z</i>-direction. Furthermore, in oblique views encompassing both the <i>x</i>- and <i>y</i>-directions, it maintains competitive transmittance rates of 44.2% and 29.5%, respectively. This strategic design not only ensures clear and unobstructed views for building occupants in the <i>z</i>- and <i>x</i>-directions but also contributes significantly to energy conservation by preventing oblique incident light from penetrating, thus reducing cooling requirements. Our ULH-based GHLC cell represents a breakthrough in smart window technology, offering an elegant solution to the challenge of balancing energy efficiency and occupant comfort in architectural settings. This advancement holds promising implications for sustainable building designs by enhancing indoor environmental quality while mitigating energy consumption for cooling, ultimately redefining the potential of smart windows in contemporary architecture. |
| first_indexed | 2024-03-10T21:19:21Z |
| format | Article |
| id | doaj.art-312e5a1052304859b9641b2a58d79e34 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T21:19:21Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-312e5a1052304859b9641b2a58d79e342023-11-19T16:09:36ZengMDPI AGCrystals2073-43522023-10-011310146410.3390/cryst13101464Energy-Efficient Liquid Crystal Smart Window with a Clear ViewChan-Heon An0Tae-Hoon Choi1Seung-Won Oh2Department of Electrical Information Communication Engineering, Kangwon National University, Samcheok City 25913, Republic of KoreaSmart Materials R&D Center, Korea Automotive Technology Institute, Cheonan 31214, Republic of KoreaDepartment of Electrical Information Communication Engineering, Kangwon National University, Samcheok City 25913, Republic of KoreaIn this study, we enhance the angular-selective light absorption capabilities of guest–host liquid crystal (GHLC) cells by introducing a novel design featuring a uniform lying helix (ULH) structure. Previously GHLC cells, predominantly vertically aligned cells absorbed obliquely incident light but compromised <i>x</i>-direction visibility. In stark contrast, our ULH-based design allows incident light to seamlessly traverse transmittance in both <i>z</i>- and <i>x</i>-directions while efficiently obstructing oblique incident light in the <i>y</i>-direction. Our innovative ULH-based GHLC cell achieves an impressive optical performance. Specifically, it attains a substantial transmittance rate of 56.7% in the <i>z</i>-direction. Furthermore, in oblique views encompassing both the <i>x</i>- and <i>y</i>-directions, it maintains competitive transmittance rates of 44.2% and 29.5%, respectively. This strategic design not only ensures clear and unobstructed views for building occupants in the <i>z</i>- and <i>x</i>-directions but also contributes significantly to energy conservation by preventing oblique incident light from penetrating, thus reducing cooling requirements. Our ULH-based GHLC cell represents a breakthrough in smart window technology, offering an elegant solution to the challenge of balancing energy efficiency and occupant comfort in architectural settings. This advancement holds promising implications for sustainable building designs by enhancing indoor environmental quality while mitigating energy consumption for cooling, ultimately redefining the potential of smart windows in contemporary architecture.https://www.mdpi.com/2073-4352/13/10/1464liquid crystalsguest–hostuniform lying helixselective absorptionenergy-saving |
| spellingShingle | Chan-Heon An Tae-Hoon Choi Seung-Won Oh Energy-Efficient Liquid Crystal Smart Window with a Clear View Crystals liquid crystals guest–host uniform lying helix selective absorption energy-saving |
| title | Energy-Efficient Liquid Crystal Smart Window with a Clear View |
| title_full | Energy-Efficient Liquid Crystal Smart Window with a Clear View |
| title_fullStr | Energy-Efficient Liquid Crystal Smart Window with a Clear View |
| title_full_unstemmed | Energy-Efficient Liquid Crystal Smart Window with a Clear View |
| title_short | Energy-Efficient Liquid Crystal Smart Window with a Clear View |
| title_sort | energy efficient liquid crystal smart window with a clear view |
| topic | liquid crystals guest–host uniform lying helix selective absorption energy-saving |
| url | https://www.mdpi.com/2073-4352/13/10/1464 |
| work_keys_str_mv | AT chanheonan energyefficientliquidcrystalsmartwindowwithaclearview AT taehoonchoi energyefficientliquidcrystalsmartwindowwithaclearview AT seungwonoh energyefficientliquidcrystalsmartwindowwithaclearview |