Comparative study of soft thermal printing and lamination of dry thick photoresist films for the uniform fabrication of polymer MOEMS on small-sized samples

Abstract : A method called " soft thermal printing " (STP) was developed to ensure the optimal transfer of 50-µm-thick dry epoxy resist films (DF-1050) on small-sized samples. The aim was the uniform fabrication of high aspect ratio polymer-based MOEMS (micro-optical-electrical-mechanical system) on small and/or fragile samples, such as GaAs. The printing conditions were optimized, and the resulting thickness uniformity profiles were compared to those obtained via lamination and SU-8 standard spin-coating. Under the best conditions tested, STP and lamination produced similar results, with a maximum deviation to the central thickness of 3% along the sample surface, compared to greater than 40% for SU-8 spin-coating. Both methods were successfully applied to the collective fabrication of DF1050-based MOEMS designed for the dynamic focusing of VCSELs (vertical-cavity surface-emitting lasers). Similar, efficient electro-thermo-mechanical behaviour was obtained in both cases. 2
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Soumis le : lundi 8 janvier 2018 - 13:56:22
Dernière modification le : mercredi 28 février 2018 - 10:23:14

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Sami Abada, Laurène Salvi, Rémi Courson, Emmanuelle Daran, Benjamin Reig, et al.. Comparative study of soft thermal printing and lamination of dry thick photoresist films for the uniform fabrication of polymer MOEMS on small-sized samples. Journal of Micromechanics and Microengineering, IOP Publishing, 2017, 27 (5), pp.055018. 〈10.1088/1361-6439/aa6a27〉. 〈hal-01677496〉

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