QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: zuriana auzar on November 15, 2015, 08:39

Title: Sensitivity
Post by: zuriana auzar on November 15, 2015, 08:39

Hi everyone,

According to the equation of gas sensitivity which is

ΔR/Ra = (Rg-Ra)/Ra

where Ra and Rg represent  the resistances of the device to air and the analyte gas respectively.
Where the value of sensitivity is simply get from the linear IV curve.

For my case, the IV curve that i got is not linear and i attach the samples of the IV characteristics.
My question is how can i calculate the gas sensitivity if the IV curve is non linear?

Title: Re: Sensitivity
Post by: Umberto Martinez on November 16, 2015, 13:09

Most of the time you will find a non-linear behavior in your IV curves.
It can be linear or approximated to linear in a small bias window though.

So, you should decide in which bias window your sensor is better suited to work.

Title: Re: Sensitivity
Post by: zuriana auzar on November 17, 2015, 09:02

Thank you for your information.  It really helped me  :)