Signal Stability of LTCC Cantilever Force Sensors

In this work, we study in detail the sensing characteristics of piezoresistive force sensors based on structured LTCC (Low Temperature Co-fired Ceramic) cantilevers carrying a thick-film piezoresistive bridge. These devices show much improved sensitivity compared to classical alumina-based devices, but may exhibit abnormally large signal and drift, which indicates the presence of structural defects originating from fabrication issues or deleterious interactions between materials. To eliminate these effects, the fabrication parameters of the LTCC cantilevers have been studied in detail. By varying materials, layer thicknesses, stacking order and lamination parameters, the respective roles of resistor-termination-tape interactions, plastic deformation of conductor tracks and lamination quality of the LTCC sheets may be elucidated.


Published in:
Procedia Engineering, 25, 551-554
Presented at:
Eurosensors XXV, Athens (GR), 4-7.9.2011
Year:
2011
Publisher:
Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa
Keywords:
Note:
Dérive de capteurs piézorésistifs en LTCC
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2012-06-03, last modified 2018-01-28

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