Polymer-dispersed liquid-crystal-based switchable glazing fabricated via vacuum glass coupling.
Polymer-dispersed liquid-crystal-based switchable glazing fabricated via vacuum glass coupling.
复制标题
作者：
呈现透射率切换的聚合物分散液晶（PDLC）用于保存能量和保护隐私。在这里，我们从市售聚合物和具有纳米珠的液晶制备了典型的PDLC混合物。使用线棒涂布机将PDLC混合物涂布在氧化铟锡涂布的玻璃上，并且通过在真空中耦合另一玻璃而不是聚合物膜来组装PDLC单元。成功地制备了面积为15 × 15 cm 2的均匀玻璃基PDLC，而具有毛细管作用的注射工艺不适用于这种大规模的器件制造。电池的切换行为通过使AC电压斜升来表征，并且测量到约70%的透射率变化。在典型的卷对卷工艺中，仅在层压中使用柔性聚合物膜，其中随着时间的推移透明度发生劣化，从而降低效率。在这项研究中，为了改善光学性能，PDLC可切换玻璃直接制造在玻璃基板上，而不是塑料聚合物上。这种PDLC可切换玻璃窗具有低雾度和广角视觉，可以通过真空耦合工艺大规模制造，具有作为节能建筑玻璃窗的潜在用途。提出了一种真空耦合技术来制备玻璃基PDLC，而不使用卷到卷工艺，以改善光学性能。
Polymer-dispersed liquid crystals (PDLCs) exhibiting transmittance switching are utilized for preserving energy and protecting privacy. Here we prepared a typical PDLC mixture from a commercially available polymer and liquid crystal with nano-beads. A wire-bar coater was used to coat the PDLC mixture on indium-tin-oxide-coated glass, and a PDLC cell was assembled by coupling another glass in a vacuum, instead of a polymer film. Uniform glass-based PDLCs were fabricated successfully with an area of 15 × 15 cm2, while an injection process with capillary action was not available for this large-scale device fabrication. The switching behavior of the cells was characterized by ramping the AC voltage, and a transmittance change of ∼70% was measured. In a typical roll-to-roll process, only flexible polymer films have been used in lamination, in which deterioration in transparency occurs over the course of time, reducing the efficiency. In this study, to improve the optical properties, PDLC switchable glazing is fabricated directly onto glass substrates instead of onto plastic polymers. This PDLC switchable glazing, exhibiting low haziness and wide-angle vision, can be fabricated at a large scale by a vacuum-coupling process, with potential use as glass windows for energy-efficient buildings. A vacuum-coupling technique is suggested to fabricate a glass-based PDLC, without using a roll-to-roll process, to improve the optical properties.
登录
查看更多内容
影响因子：
--
作者：
Li, Wenbo;Cao, Yubo;Yang, Huai
通讯作者：
Yang, Huai
影响因子：
0.7
作者：
Elqidrea, A.;Meziane, R.;Maschke, U.
通讯作者：
Maschke, U.
影响因子：
2.2
作者：
Kumari, Asha;Sinha, Aloka
通讯作者：
Sinha, Aloka
影响因子：
3.5
作者：
Kim, GS;Hyun, SH
通讯作者：
Hyun, SH
影响因子：
2.4
作者：
Kim, Yura;Jung, Dayeon;Seo, Yongho
通讯作者：
Seo, Yongho