Abstract
Gas sensors are extensively used in many applications, whereas biosensors represent a more recent addition to the field of sensor technology. The use of nanocomposites as sensor materials has been extensively employed owing to their distinctive redox chemistry. Conductive polymer nanocomposites possess notable characteristics such as a substantial surface area, diminutive dimensions, and augmented properties, making them well suited for diverse sensing systems. The primary purpose of gas sensors is to identify chemicals at concentrations below the threshold of human olfaction, such as parts per million, parts per billion, or even parts per trillion These gases pose a risk to human health even at lower levels of concentration. Therefore, it is extensively used in several disciplines. One particular problem with biosensor devices is that the detection event cannot be detected directly by the transfer technique used. This is the case for affinity biosensors, such as the immune reaction between an antigen and its antibody or the hybridization of DNA strands. Applicable materials are commonly known as materials that have their own indigenous properties and functions. Materials suitable for a wide range of applications can be found across different categories such as metal nanoparticles and oxides, polymers, and organic and biological molecules. These materials are commonly utilized in chemically modified electrodes to enhance or achieve specific electroanalytical functions. By combining nanocomposites with various functional materials, their chemical and physical characteristics can be precisely adjusted, thereby producing a composite with a combination of properties from each of the constituent materials.
Published Version
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