Abstract:
The present invention relates to an ISFET integrated with a heating element, particularly a micro-heater, for gas sensing application. A method for fabricating the ISFET with the micro-heater is also disclosed in the present invention. By using the method of the present invention, the ISFET with the micro-heater has optimum performance and detection sensitivity to its environment changes, while reducing potential damage on the sensing membrane element. Furthermore, the configuration of the ISFET which includes at least two silicon substrates enables the fabrication of the ISFET device with the micro-heater to be more effective, leaves no air gap, and does not block the micro-heater and the sensing membrane element during detection. Thus, the sensing membrane element and the micro-heater are fully exposed the change of its environment.