泊松比
材料科学
机械生物学
自愈水凝胶
泊松分布
背景(考古学)
辅助
模数
组织工程
纳米技术
刚度(电磁)
弹性模量
复合材料
生物医学工程
高分子化学
数学
古生物学
统计
生物
医学
遗传学
作者
Wande Zhang,Pranav Soman,Kyle Meggs,Xin Qu,Shaochen Chen
标识
DOI:10.1002/adfm.201202666
摘要
Abstract Cells sense and respond to mechanical forces, regardless of whether the source is from a normal tissue matrix, an adjacent cell or a synthetic substrate. In recent years, cell response to surface rigidity has been extensively studied by modulating the elastic modulus of poly(ethylene glycol) (PEG)‐based hydrogels. In the context of biomaterials, Poisson's ratio, another fundamental material property parameter has not been explored, primarily because of challenges involved in tuning the Poisson's ratio in biological scaffolds. Two‐photon polymerization is used to fabricate suspended web structures that exhibit positive and negative Poisson's ratio (NPR), based on analytical models. NPR webs demonstrate biaxial expansion/compression behavior, as one or multiple cells apply local forces and move the structures. Unusual cell division on NPR structures is also demonstrated. This methodology can be used to tune the Poisson's ratio of several photocurable biomaterials and could have potential implications in the field of mechanobiology.
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