Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan.
Lab Chip. 2013 Jun 21;13(12):2364-9. doi: 10.1039/c3lc50287b. Epub 2013 May 3.
We designed and fabricated a micro-scaled cell gripper based on two highly flexible magnetic zigzag structures that can be actuated by a magnetic field. Elongated single domain magnetic thin films with high magnetic shape anisotropy were deposited on the zigzag structures. By adjusting the external magnetic field we were able to control the torque applied on the magnetic films that was responsible for the actuation. We measured and discussed the displacement of the zigzag structures under different magnetic fields, and we observed a hysteresis characteristic in the actuation. Furthermore, we demonstrated the ability of gripping a single cell in water solution using the designed cell microgripper. The cell microgripper proposed in this study can provide important information for future biochip and biomedical applications.
我们设计并制造了一种基于两个高度灵活的磁场驱动的磁 Z 字形结构的微尺度细胞夹。在 Z 字形结构上沉积了具有高磁形状各向异性的长形单畴磁性薄膜。通过调节外部磁场，我们能够控制施加在磁性薄膜上的扭矩，从而实现致动。我们测量并讨论了不同磁场下 Z 字形结构的位移，并观察到了致动中的磁滞特性。此外，我们使用设计的细胞微夹在水溶液中展示了夹持单个细胞的能力。本研究提出的细胞微夹可为未来的生物芯片和生物医学应用提供重要信息。
