eng Science and Education Publishing Journal of Instrumentation Technology 2014-12-07 2 1 26 39 10.12691/jit-2-1-5 JIT2014215 article Shruthi GS 1 Amitha CV 1 Blessy Baby Mathew blessym21@gmail.com 1 Department of Biotechnology, Sapthagiri College of Engineering, Bangalore, Karnataka, India The term biosensor is often used to cover sensor devices used in order to determine the concentration of substances and other parameters of biological interest even where they do not utilize a biological system directly. This review discusses recent advances in biosensor technology which draw on the disciplines of physics, chemistry, biochemistry and electronics. This article states that a biosensor consists of three components, a biological detection system, a transducer and an output system. Biological receptors are briefly reviewed, followed by a detailed discussion of immobilization procedures for the efficacious attachment of receptor molecules to a transducer surface. Widely used in the fields of research and development in this field is wide and multidisciplinary, spanning biochemistry, bioreactor science, physical chemistry, electrochemistry, electronics and software engineering. http://pubs.sciepub.com/jit/2/1/5/jit-2-1-5.pdf Biosensor immune sensors amperometricsensor conductometricsensor