2A2-L02 Magnetically Driven Robot-on-a-chip (MDRoC) : Part 2: Design and Fabrication of Hybrid MMT

We proposed a polymer-metal hybrid MMT (magnetically driven microtool) which has properties of both elasticity and rigidity. A magnetic metal axle is made by electroplating which is rigid to prevent bending by the unwanted external force. The magnetic metal axle also has a merit to have higher magnetic property which contributes to the powerful actuation. We designed a hybrid MMT for on-demand droplet dispensing on a chip. The displacement of the hybrid MMT was about 300 μm which was 6 times larger than that of the conventional MMT, and on-demand droplet generation was successfully performed. The MMT has potential to be used as micro-nano-robot on a chip which can be defined as Magnetically Driven Robot-on-a-Chip (MDRoC).