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Heliotracking Device using Liquid Crystalline Elastomer Actuators
DOI:10.1002/admt.202100681.png)
摘要
En 中文
Many living organisms in nature respond to light stimulus and track the light source. Inspired by this, and to maximize the light-harvesting ability of solar cells, here, a spontaneous helio-tracking device based on the differential light-induced actuation of liquid crystalline elastomers (LCEs) is demonstrated. The synthesis of the actuator material involves a robust thiol click polymerization, while the addition of indocyanine green (ICG) dye imparts the sensitivity to broad-spectrum and near-infrared light. Highly reproducible thermal and photo-induced linear actuation is demonstrated. The device is based on a freely pivoting payload platform held in place by several linear LCE actuators around the 360 degrees circumference. The side of the device, which is exposed to light, has the actuators contracting and tilting the platform toward the light source. As the light source (e.g., the Sun) is moving around the device, the platform tilt followed, always exposing the payload face to the light; in the dark, the device recovers its neutral position.
Keyword:
heliotracking
liquid crystalline elastomers
photo-actuation
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期刊
IF:
6.2
论文数:
5.3K
被引数:
2.4W
机构
引用论文
Untethered soft robotic matter with passive control of shape morphing and propulsion具有形状变形和推进的被动控制的不受束缚的软机器人物质
SCIENCE ROBOTICS
IF27.5
Direct Sun-Driven Artificial Heliotropism for Solar Energy Harvesting Based on a Photo-Thermomechanical Liquid-Crystal Elastomer Nanocomposite基于光热机械液晶弹性体纳米复合材料的太阳直接驱动的人工日光性,用于太阳能收集

