Simulation of Particle Trajectory Under Laminar Flow for MDDS Application

Jyun Rong Huang, Chia-Ming Yang, Wei Hsuan Chang, In Gann Chen

研究成果: Article同行評審

摘要

Magneticdrug delivery systems (MDDS) can be used to increase drug concentration and reduce side effects on healthy tissues by guiding magnetic drugs to specific areas via an external magnetic field. To understand the behavior of the magnetic drugs under magnetic field in MDDS application, this study proposed a multi-physics calculation model (including: magnetic force, drag force, buoyancy, and gravity), and validated the predictions through actual observations under various flowing parameters in a fluidic channel by digital optical microscope. In the validation experiments, the flow rate (0.5-2 mm/s), channel width (1.8 mm), and viscosity (8.75 cP) referring to a vein were considered. The results showed that the average trajectory error was 1.72 μm (z axis)/mm (x axis) with the flow rate (0.5 mm/s), which signified that our model has a high degree of reliability. This research also discussed the computational results of Nd-Fe-B permanent magnets (PM) and Y-Ba-Cu-O bulk superconductors (HTS) for attracting particles of different sizes in veins. The results showed that when the magnetic field source was placed at z = -11 mm and the flow rate was 1 mm/s, the critical particle size of PM was 1 μm, and that of HTS was 0.5 μm; when the magnetic field source position was at z = -6 mm, the critical particle sizes of HTS and PM were reduced to 0.3 μm and 1 μm, respectively, showing that stronger magnetic field strength and gradients can attract smaller magnetic particles. In addition, for HTS and PM, the particles were attracted in the range of x = -5 mm to 5 mm and x = -9 mm to -1 mm, indicating that HTS can concentrate particles more effectively because of its large magnetic field gradient in the center.

原文English
文章編號4400905
期刊IEEE Transactions on Applied Superconductivity
32
發行號6
DOIs
出版狀態Published - 2022 9月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程

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