Vineetha Mohan and Anand HV
With increase in potential for bioterrorism, there is a great demand to detect the bio agents in the atmosphere in a quick, reliable and accurate method. Biosensor is an analytical device which uses enzymes, immunosystems, tissues that converts biological response into electrical, thermal or optical signals. Biosensor is an efficient and cost effective device which is most widely used for various day to day applications. Biosensor consists of two components: first the “sensing element” and second is the “transducers”. Sensing element may be either enzymes, antibodies, DNA, tissues or whole cells which transduces the biochemical reaction into electrical signals. Basic advantage of biosensor is the use of nanomaterials, micro fluidics and transducer on a single chip. Biosensors have found its application in fermentation, food industry, diagnosis, imaging, DNA sequencing and biodefense. Development of nanotechnology leads to the development of macro and micro sensors which is small and sensitive.
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