We present an integrated chemical sensor array fabricated using a CMOS process followed by post-processing. The sensor presented in this paper incorporates 324 individually addressable sensing nodes. Post processing involves an electroless Nickel and Gold plating step to fabricate sensing contacts, and the deposition of a carbon black based polymer sensor material. The operation of the integrat...

Electroless nickel is often plated on the surface of aluminum mirrors to improve the ability to polish the mirror surface. Electroless nickel plating can cause a bimetallic effect, creating distortion of a mirror surface if it is heated or cooled. Published data listing the thermal coefficient of expansion and Young’s modulus as a function of temperature for electroless nickel is not readily av...