可调节的光敏聚氨尿素弹性体,由光化学和光热合机制驱动
Lei Wu1, Xia Huang1, Meng Wang1
1Centre of Biomaterials for in Surgical Reconstruction and Regeneration, Department of Surgical Biotechnology, Division of Surgery & Interventional Science, University College London, London NW3 2PF, United Kingdom.
ACS applied materials & interfaces
|April 6, 2024
概括
研究人员开发了一种用于软机器人的新型光敏弹性体. 这种材料可以在软执行器中实现可控的光驱动运动,模仿生物运动,用于生物医学和机器人应用.
科学领域:
- 材料科学 材料科学 材料科学
- 机器人技术 机器人技术 机器人技术
- 生物医学工程 生物医学工程
背景情况:
- 软执行器模仿生物运动,没有刚性部件.
- 现有的光响应材料缺乏机器人所需的机械,生物和制造性能.
研究的目的:
- 为软机器人和生物医学应用合成和表征一种新型可见光响应热塑性弹性体.
- 为了证明该材料在具有可调节机械性能的光驱动执行器中的潜力.
主要方法:
- 合成了一种聚氨尿素弹性体 (PAzo),其中包含阿佐衍生物.
- 使用PAzo和聚胺薄膜制造的双层执行器.
- 通过实验和理论分析研究了执行机制.
主要成果:
- 帕索弹性体表现出光驱动的刚性软化和出色的超弹性 (575.2%的伸展性,17.6MPa的模量,44.0MPa的强度).
- 在双层执行器中通过变化的光强度实现了可调节的曲模式.
- 展示了一种可见光控制的软机器人手指应用.
结论:
- 坚固,生物相容和可扩展的PAzo弹性体适用于光驱动执行器.
- 这种材料促进了可穿戴/植入设备和用于临床的软机器人的开发.
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