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A miniature flow sensor fabricated by micro-stereolithography employing a magnetite/acrylic nanocomposite resin

Leigh, S. J.; Purssell, C. P.; Bowen, J.; Hutchins, D. A.; Covington, J. A. and Billson, D. R. (2011). A miniature flow sensor fabricated by micro-stereolithography employing a magnetite/acrylic nanocomposite resin. Sensors and Actuators A: Physical, 168(1) pp. 66–71.

DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.sna.2011.03.058
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Abstract

Micro-Stereolithography (MSL) is an important technique for fabrication of three-dimensional (3D) structures and micro-devices. With the recent developments to the MSL processsuch as the use of multiple resins in single components, the number of applications for devices produced with this process has expanded greatly. MSL technology is also opening up new paradigms in the area of Microelectromechnical Systems (MEMS) research & applications, with fabrication of custom, precise and low-cost devices a reality. The development of MSL resins that provide functionality beyond the purely structural are required to meet the ever increasing demand for more complex sensors and devices that can be used in custom applications. Functionality can be introduced into MSL polymer resins through addition of particulate fillers into the resin matrix. Here, magnetite (Fe3O4) nanoparticles (approx 50 nm diameter) were introduced into a resin matrix and used for the fabrication of a flow sensor device. The rotation of the impeller can be determined using an external magnetic field sensor not in contact with the device. The speed of the impeller is examined to find the range over which a proportional increase in the speed with applied pressure is achieved. Such sensors could prove useful due to their rapid, low cost and custom fabrication where the structure of the sensor can be altered/refined as required while the electronic components are retained for further use.

Item Type: Journal Item
Copyright Holders: 2011 Elsevier B.V.
ISSN: 0925-4005
Keywords: micro-stereolithography; micro-fabrication; direct manufacture; resin; magnetic; sensor; nanoparticles
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
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Item ID: 43184
Depositing User: James Bowen
Date Deposited: 11 Jun 2015 14:52
Last Modified: 10 Nov 2016 17:18
URI: http://oro.open.ac.uk/id/eprint/43184
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