Fabrication and Packaging of Flexible Polymeric Microantennae for in Vivo Magnetic Resonance Imaging

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ID: 35473
2012
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Abstract
In this paper, we detail how microantennae dedicated to Magnetic Resonance Imaging (MRI) can benefit from the advantages offered by polymer substrates, especially flexibility and dielectric properties. We present a monolithic and wireless design based on the transmission lines between conductor windings on both sides of a dielectric substrate and its fabrication process. This last one requires specific plasma treatments to improve polymer/metal adhesion. We have led a comparative study on the effects of the ageing time on the wettability and the metal adhesion to Kapton and Teflon surfaces. Correlation between wettability (water contact angle) and adhesion (tensile strength) has been established. Then, the use of PolyDiMethylSiloxane (PDMS) as biocompatible packaging material and the optimization of its thickness allows us to conserve suitable f0 and Q values in a conducting environment such as the biological tissues. These studies allow us to perform 7 Tesla in vivo MRI of the rat brain with a high spatial resolution of 100 x 100 x 200 µm3 and a Signal to Noise Ratio of 80.
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dufourgergam2012fabricationpolymers Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dufour-Gergam, Elisabeth;Boumezbeur, Fawzi;Ginefri, Jean-Christophe;Tatoulian, Michael;Lethimonnier, Franck;Couty, Magdalèna;Darrasse, Luc;Poirier-Quinot, Marie;Martincic, Emile;Rubin, Anne;Woytasik, Marion;
Journal Polymers
Year 2012
DOI
DOI not found
URL
http://www.mdpi.com/2073-4360/4/1/656/
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