The method consists in depositing, by alumina spraying, an electrically insulating sublayer on the substrate, then in placing the sensor on the electrically insulating sublayer and finally in depositing, by alumina spraying, a cover layer on the sensor and the electrically insulating sublayer. An operation monitoring mechanism continuously monitors the system’s operation. A SOW score focusing on a consumer’s spending capability can be used in the same manner as a credit bureau score. The electrolytic capacitor is a high-performance capacitor. Therefore, degradation of the charge pump output voltage due to voltage drops of the NMOS transistor is reduced, resulting in larger output voltages. The trench isolation technique can be used to fabricate memory, logic and imager devices which can exhibit reduced current leakage andor reduced optical cross-talk.