Optimised cantilever biosensor with piezoresistive read-out.
We present a cantilever-based biochemical sensor with piezoresistive read-out which has been optimised for measuring surface stress. The resistors and the electrical wiring on the chip are encapsulated in low-pressure chemical vapor deposition (LPCVD) silicon nitride, so that the chip is well suited for operation in liquids. The wiring is titanium silicide which-in contrast to conventional metal wiring-is compatible with the high-temperature LPCVD coating process.
Rasmussen
P A
PA
Mikroelektronik Centret (MIC), Technical University of Denmark, Building 345E, 2800 Kgs., Lyngby, Denmark. pra@mic.dtu.dk
Thaysen
J
J
Hansen
O
O
Eriksen
S C
SC
Boisen
A
A