Abstract

In this paper, we report on an inexpensive method for fabricating mm-scale magnetic actuators using ferrofluid impregnated paper. Different types of papers were loaded with light oil-based ferrofluid, cut to cantilever shape, coated with parylene C, and tested with an external magnetic field. Cleanroom and filter paper were able to generate large forces (>40 mg equivalent force) whereas soft tissue paper provided the largest deflection (40° tip angle). Coating parylene on ferro-paper not only improves the mechanical properties but also allows the ferro-paper actuator to work in liquid environment.

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