CUED Publications database

A ferrofluid seal technology for fluidic microactuators

De Volder, M and Reynaerts, D (2007) A ferrofluid seal technology for fluidic microactuators. In: UNSPECIFIED.

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Abstract

Recent research revealed that microacruators driven by pressurized fluids are able to generate high power and force densities at microscale. Despite these promising properties, fluidic actuators are rare in microsystem technology. The main technological barrier in the development of these actuators is the fabrication of powerful seals with low leakage. This paper presents a seal technology for linear fluidic microacruators based on ferrofluids. An accurate design method for these seals has been developed and validated by measurements on miniaturized actuator prototypes. Our current actuator prototypes are able to seal pressures up to 16 bar without leakage. The actuator has an outside diameter of 2 mm, a length of 13 mm and the actuator is able to generate forces of 0.65 N and a stroke of 10 mm. Moreover, promising properties such as the restoration of the seal after a pressure overload have been observed.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: Ferrofluid Fluidic micro-actuator Micro-robotics Microseal
Subjects: UNSPECIFIED
Divisions: Div E > Production Processes
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:05
Last Modified: 08 Dec 2014 02:24
DOI: 10.1117/12.695524