Tesis de maestría
Development of a multiplexed potentiostat for individually addressable microelectrode arrays-Edición Única
Fecha
2008-05-01Autor
Palacios Aguilera, Nuria Berenice
Institución
Resumen
This thesis illustrates the theoretic framework and the development of a multiplexed
potentiostat for individually addressable microelectrode arrays. The initial research covers
the study of previous literature research, search for commercially available potentiostat
systems, and research about the main electrochemical techniques. The design stage begins
showing the electrochemical cell electronic model to continue with the design of an
individual potentiostat system using high sensitivity instrumentation amplifier
configurations. Then, a multiplexed potentiostat system is developed including filters to
eliminate noise and peaks result from switching between the voltage signals. The system
will be able to measure currents from 1 pA up to 1.5 µ A, using the cyclic voltammetry
technique with scan rates of about 2000 mV/s. The simulations were performed using
ICFlow from Mentor Graphics and HIT-Kit 3.7 from Austria Microsystems. Moreover, this
thesis discusses some further work in order to enhance the performance of the multiplexed
potentiostat.