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  • 标题:Biological tissue-inspired tunable photonic fluid
  • 作者:Xinzhi Li ; Amit Das ; Dapeng Bi
  • 期刊名称:Proceedings of the National Academy of Sciences
  • 印刷版ISSN:0027-8424
  • 电子版ISSN:1091-6490
  • 出版年度:2018
  • 卷号:115
  • 期号:26
  • 页码:6650-6655
  • DOI:10.1073/pnas.1715810115
  • 语种:English
  • 出版社:The National Academy of Sciences of the United States of America
  • 摘要:Inspired by how cells pack in dense biological tissues, we design 2D and 3D amorphous materials that possess a complete photonic bandgap. A physical parameter based on how cells adhere with one another and regulate their shapes can continuously tune the photonic bandgap size as well as the bulk mechanical properties of the material. The material can be tuned to go through a solid–fluid phase transition characterized by a vanishing shear modulus. Remarkably, the photonic bandgap persists in the fluid phase, giving rise to a photonic fluid that is robust to flow and rearrangements. Experimentally this design should lead to the engineering of self-assembled nonrigid photonic structures with photonic bandgaps that can be controlled in real time via mechanical and thermal tuning.
  • 关键词:photonic materials ; cells ; tissue mechanics ; metamaterials ; bioinspired materials
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