A Low-Cost Inertial Sensor Based on Shaped Magnetic Fluids

In this paper, an inertial sensor exploiting the effect of external stimuli on a ferrofluid spike is presented. The device consists of a glass pipe filled with water where a mass of ferrofluid is fixed to the pipe wall and spike shaped by a suitable magneticfield configuration. An external perturbat...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2012-05, Vol.61 (5), p.1231-1236
Main Authors: Ando, B., Baglio, S., Beninato, A.
Format: Article
Language:English
Subjects:
Devices
Ferrofluid
Ferrofluids
Force
Glass
Inertial
inertial sensor
Infrared
infrared (IR) readout
Magnetic devices
Magnetic liquids
Magnetic resonance
Media
modeling
Pipe
Rosensweig effect
Sensors
Spikes
Walls
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Summary:In this paper, an inertial sensor exploiting the effect of external stimuli on a ferrofluid spike is presented. The device consists of a glass pipe filled with water where a mass of ferrofluid is fixed to the pipe wall and spike shaped by a suitable magneticfield configuration. An external perturbation will produce a movement of the spike free end, which is sensed via an infrared readout strategy. A theoretical analysis of the sensing methodology is performed, along with experiments on a laboratory-scale prototype confirming the expected behavior of the device.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2011.2174902