Martínez-Aranda Sergio, Galindo-Rosales Francisco J, Campo-Deaño Laura
CEFT, Faculty of Engineering, University of Porto. Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
Soft Matter. 2016 Feb 28;12(8):2334-47. doi: 10.1039/c5sm02422f.
A new experimental setup for the study of the complex flow dynamics around 3D microbot prototypes in a straight microchannel has been developed and assessed. The ultimate aim of this work is focused on the analysis of the morphology of different microbot prototypes to get a better insight into their efficiency when they swim through the main conduits of the human circulatory system. The setup consists of a fused silica straight microchannel with a 3D microbot prototype fastened in the center of the channel cross-section by an extremely thin support. Four different prototypes were considered: a cube, a sphere and two ellipsoids with aspect ratios of 1 : 2 and 1 : 4, respectively. Flow visualization and micro-particle image velocimetry (μPIV) measurements were performed using Newtonian and viscoelastic blood analogue fluids. An efficiency parameter, ℑ, to discriminate the prototypes in terms of flow disturbance has been proposed.
已经开发并评估了一种用于研究直微通道中3D微型机器人原型周围复杂流动动力学的新实验装置。这项工作的最终目标是专注于分析不同微型机器人原型的形态，以便更好地了解它们在通过人体循环系统的主要管道游动时的效率。该装置由一个熔融石英直微通道组成，一个3D微型机器人原型通过极细的支撑固定在通道横截面的中心。考虑了四种不同的原型：一个立方体、一个球体和两个纵横比分别为1:2和1:4的椭球体。使用牛顿流体和粘弹性血液模拟流体进行了流动可视化和微观粒子图像测速（μPIV）测量。提出了一个效率参数ℑ，用于根据流动干扰来区分这些原型。
