1. Introduction1.1 NanoelectronicsNanoelectronics refers to the application of nanotechnology in electronic modules. In simple words we can say that it is defined as an electron on a nanometric scale. A thin film is a layer of material whose thickness varies from nanometers to several micrometers. Thin films have more importance than thick films due to their interface and surface effects. Semiconductor devices and optical coatings are the main industries that benefit from thin film construction. Many other applications of thin film materials are photoconductors, solar cells, dye-sensitized solar cells, solar selective coatings, large array fabrication, narrow band filters, thin film batteries, polarizers, sensors, photothermal solar coatings, photoconductors , IR detectors, satellite temperature control, anti-reflection coatings, interference elements, waveguide coatings, etc. Metal oxide thin films have greater significance in nanoelectronics due to their extraordinary chemical sensing properties. The preparation of a chemical sensing element is classified into two categories. One is the physical method and the other is the chemical method. In the physical method, the substrate is held stationary and the film material is moved from a target material to the substrate in the form of vapor or via an impact process with some form of external energy. Vacuum evaporation falls into this category. While the fabrication of the chemical film involves the chemical reaction of the precursors which takes place on the surface of the substrate or in its vicinity. The chemical method is further classified into vapor phase and liquid phase technique. The chemical vapor deposition technique falls under the vapor phase technique and electrodeposition, chemical bath deposition... to the center of the paper... and a laboratory-scale automated system using a stepper motor and the card NI USB 6212 Data Acquisition (DAQ) in the LabVIEW Platform.1.4 Automated SILAR System:ADD LABVIEW AND STEPPER MOTOR CONTENTS HERE1.5 Metal Oxide Sensor - Biomarker:The electrical conductivity of the metal oxide sensor varies with respect to the amount of gas/vapor surrounding them. Depending on its sensing nature, a sensor may be able to effectively detect a particular gas/vapour. This property can be used in medical diagnosis to serve as an electronic nose. If the sensor can detect the biologically significant gas that accompanies the patient's exhaled breath, it can be used as a biomarker to detect disease noninvasively. The doctor was informed by email if the values ​​detected were abnormal. ADD SMTP CONTENT HERE