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Low-power, deformable, dynamic multicolor electrochromic skin
Nano Energy ( IF 16.8 ) Pub Date : 2020-08-13 , DOI: 10.1016/j.nanoen.2020.105199
Jehyoung Koo , Vipin Amoli , So Young Kim , Chaeyoung Lee , Junho Kim , Sung-Min Park , Jeongsun Kim , Joon Mo Ahn , Kyung Jin Jung , Do Hwan Kim

Active camouflage exhibited by certain creatures in nature such as cephalopods has inspired the fabrication of display devices for human-adaptive camouflage technologies. In order to realize that, electrochromic devices (ECDs) have attracted significant attention owing to their low-voltage operations and fast responses. However, the effective utilization of ECDs requires multicolor patterning, durable functioning, and wearable characteristics, simultaneously, but has not been explored. Here, we demonstrate a low-power, deformable, dynamic multicolor electrochromic skin (DMECS) that mimics the multicolor patterning and the active camouflage functionalities of the skins of cephalopods. The electrochromic polymers such as poly(3-hexylthiophene-2,5-diyl), poly[2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylenevinylene], and P4a (green color polymer) are used to create purple, orange, and green colors, respectively. An iontronic polymer pump composed of an ionic liquid (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) incorporated in thermoplastic polyurethane is used as a deformable and transparent solid-state electrolyte that enables low-voltage (±3 V) operated DMECS with excellent cyclic coloration/bleaching stability (>35,000 s), fast response (~1.75 s), and high durability under repeated 10,000 cycles of compressive force (with a bending radius of 8 mm) and tensile strains (~100% up to 15,000 s). We believe that our DMECS can offer user-controlled selective coloration/bleaching of arbitrary display patterns and open new avenues for next-generation wearable optoelectronics.



中文翻译:

低功耗,可变形,动态多色电致变色皮肤

某些自然生物(例如头足类)展示的主动伪装启发了制造适用于人类的伪装技术的显示设备。为了认识到这一点,电致变色器件(ECD)由于其低电压操作和快速响应而引起了极大的关注。但是,ECD的有效利用需要同时具有多色图案,持久功能和可穿戴特性,但尚未进行探索。在这里,我们演示了一种低功率,可变形的动态多色电致变色皮肤(DMECS),该皮肤可模仿头足类动物皮肤的多色图案和主动伪装功能。电致变色聚合物,例如聚(3-己基噻吩-2,5-二基),聚[2-甲氧基-5-(2-乙基己基-氧基)-1,4-亚苯基亚乙烯基],和P4a(绿色聚合物)分别用于创建紫色,橙色和绿色。由掺入热塑性聚氨酯中的离子液体(1-乙基-3-甲基咪唑鎓双(三氟甲基磺酰基)酰亚胺)组成的离子电子聚合物泵用作可变形且透明的固态电解质,可实现低压(±3 V)操作的DMECS具有出色的循环着色/漂白稳定性(> 35,000 s),快速响应(〜1.75 s)以及在重复10,000次压缩力(弯曲半径为8 mm)和拉伸应变(〜100%高达15,000)下的高耐久性s)。我们相信,我们的DMECS可以提供​​用户控制的任意显示图案的选择性着色/漂白,并为下一代可穿戴光电技术开辟新途径。由掺入热塑性聚氨酯中的离子液体(1-乙基-3-甲基咪唑鎓双(三氟甲基磺酰基)酰亚胺)组成的离子电子聚合物泵用作可变形且透明的固态电解质,可实现低压(±3 V)操作的DMECS具有出色的循环着色/漂白稳定性(> 35,000 s),快速响应(〜1.75 s)以及在重复10,000次压缩力(弯曲半径为8 mm)和拉伸应变(〜100%高达15,000)下的高耐久性s)。我们相信,我们的DMECS可以提供​​用户控制的任意显示图案的选择性着色/漂白,并为下一代可穿戴光电技术开辟新途径。由掺入热塑性聚氨酯中的离子液体(1-乙基-3-甲基咪唑鎓双(三氟甲基磺酰基)酰亚胺)组成的离子电子聚合物泵用作可变形且透明的固态电解质,可实现低压(±3 V)操作的DMECS具有出色的循环着色/漂白稳定性(> 35,000 s),快速响应(〜1.75 s)以及在重复10,000次压缩力(弯曲半径为8 mm)和拉伸应变(〜100%高达15,000)下的高耐久性s)。我们相信,我们的DMECS可以为用户提供任意显示模式的选择性着色/漂白功能,并为下一代可穿戴光电技术开辟新途径。

更新日期:2020-09-10
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