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Lead-zirconate titanate (PZT) nanoscale patterning by ultraviolet-based lithography lift-off technique for nano-electromechanical systems applications

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7 Author(s)
Guillon, S. ; CNRS, LAAS, Toulouse, France ; Saya, D. ; Mazenq, L. ; Nicu, L.
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The advantage of using lead zirconate-titanate (PbZr0.54Ti0.46O3) ceramics as an active material in nano-electromechanical systems (NEMS) comes from its relatively high piezoelectric coefficients. However, its integration within a technological process is limited by the difficulty of structuring this material with submicrometer resolution at the wafer scale. In this work, we are developed a specific patterning method based on optical lithography coupled with a dual layer resist process. The main objective is to obtain sub-micron features by lifting off a 100 nm thick PZT layer while preserving the material's piezoelectric properties. A subsequent result of the developed method is the ability to stack several layers with a lateral resolution of few tens of nanometers, which is mandatory for the fabrication of NEMS with integrated actuation and read-out capabilities.

Published in:

Applications of Ferroelectrics (ISAF/PFM), 2011 International Symposium on and 2011 International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials

Date of Conference:

24-27 July 2011