a Laboratory of Soft & Wet Matter, Division of Biological Sciences, Graduate School of Science , Hokkaido University , Sapporo , Japan.
Biofouling. 2014;30(3):271-9. doi: 10.1080/08927014.2013.863280. Epub 2014 Jan 22.
A long-term investigation of the shell shape and the basal morphology of barnacles grown on tough, double-network (DN) hydrogels and polydimethylsiloxane (PDMS) elastomer was conducted in a laboratory environment. The elastic modulus of these soft substrata varied between 0.01 and 0.47 MPa. Polystyrene (PS) (elastic modulus, 3 GPa) was used as a hard substratum control. It was found that the shell shape and the basal plate morphology of barnacles were different on the rigid PS substratum compared to the soft substrata of PDMS and DN hydrogels. Barnacles on the PS substratum had a truncated cone shape with a flat basal plate while on soft PDMS and DN gels, barnacles had a pseudo-cylindrical shape and their basal plates showed curvature. In addition, a large adhesive layer was observed under barnacles on PDMS, but not on DN gels. The effect of substratum stiffness is discussed in terms of barnacle muscle contraction, whereby the relative stiffness of the substratum compared to that of the muscle is considered as the key parameter.
在实验室环境中，对生长在坚韧的双网络（DN）水凝胶和聚二甲基硅氧烷（PDMS）弹性体上的藤壶的壳形状和基部形态进行了长期研究。这些软基底的弹性模量在 0.01 到 0.47 MPa 之间变化。聚苯乙烯（PS）（弹性模量，3 GPa）用作刚性 PS 基底的对照。结果发现，与 PDMS 和 DN 水凝胶等软基底相比，藤壶在刚性 PS 基底上的壳形状和基板形态不同。PS 基底上的藤壶呈截顶圆锥状，基部平坦，而在软 PDMS 和 DN 凝胶上，藤壶呈假圆柱状，基部呈弯曲状。此外，在 PDMS 上观察到藤壶下有一个大的粘合层，但在 DN 凝胶上没有。从藤壶肌肉收缩的角度讨论了基底刚度的影响，其中基底相对于肌肉的相对刚度被认为是关键参数。
