Figure 1 | Scientific Reports

Figure 1

From: Navigation of a magnetic micro-robot through a cerebral aneurysm phantom with magnetic particle imaging

Figure 1

The magnetic micro-robot. (A) The CAD model of the micro-robot. The geometry is inspired by vertical axis wind turbines and is called helical Savonius shape. (B) The micro-robot is 3D-printed using a stereolithographic printing procedure. (C) It is coated with SPIONs for the visualization with MPI. The tip consists of NdFeB particles, introducing a magnetic moment for MA. (D) The magnetization curve of the micro-robot, acquired with a VSM showing a superposition of a paramagnetic and a ferromagnetic behavior. (E) The odd harmonics of the amplitude spectrum, acquired with a magnetic particle spectrometer with an excitation frequency of 25 kHz and an amplitude of 20 mT.

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