The CF-GS device (particular, its response m) is employable for the gas sensing task to determine the partial pressure of the analyte in the raw gas, p 0 a . This task is an "inverse problem" because we wish to determine the input (p 0 a ) that caused a given output ( m), in contrast to a "forward" problem to determine the output caused by a given input. We will simulate the deployment of the CF-GS for its gas sensing task by solving this inverse problem.