Kubacková Jana, Slabý Cyril, Horvath Denis, Hovan Andrej, Iványi Gergely T, Vizsnyiczai Gaszton, Kelemen Lóránd, Žoldák Gabriel, Tomori Zoltán, Bánó Gregor
Department of Biophysics, Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia.
Department of Biophysics, Faculty of Science, P. J. Šafárik University, Jesenná 5, 041 54 Košice, Slovakia.
Nanomaterials (Basel). 2021 Nov 4;11(11):2961. doi: 10.3390/nano11112961.
Photopolymer nanowires prepared by two-photon polymerization direct laser writing (TPP-DLW) are the building blocks of many microstructure systems. These nanowires possess viscoelastic characteristics that define their deformations under applied forces when operated in a dynamic regime. A simple mechanical model was previously used to describe the bending recovery motion of deflected nanowire cantilevers in Newtonian liquids. The inverse problem is targeted in this work; the experimental observations are used to determine the nanowire physical characteristics. Most importantly, based on the linear three-parameter solid model, we derive explicit formulas to calculate the viscoelastic material parameters. It is shown that the effective elastic modulus of the studied nanowires is two orders of magnitude lower than measured for the bulk material. Additionally, we report on a notable effect of the surrounding aqueous glucose solution on the elasticity and the intrinsic viscosity of the studied nanowires made of Ormocomp.
通过双光子聚合直接激光写入（TPP-DLW）制备的光聚合物纳米线是许多微结构系统的构建基元。这些纳米线具有粘弹性特性，在动态条件下工作时，这些特性决定了它们在施加力时的变形情况。之前曾使用一个简单的力学模型来描述在牛顿液体中偏转的纳米线悬臂的弯曲恢复运动。本工作针对的是反问题；利用实验观测来确定纳米线的物理特性。最重要的是，基于线性三参数固体模型，我们推导出了用于计算粘弹性材料参数的显式公式。结果表明，所研究纳米线的有效弹性模量比块状材料的测量值低两个数量级。此外，我们报告了周围葡萄糖水溶液对由Ormocomp制成的所研究纳米线的弹性和特性粘度的显著影响。
