Nanofiber application areas sensor applications

The vapor phase chemical deposition of PPy on the surface of the electrospun PVA nanofibers was successfully performed. Morphology of the nanofibers and successful deposition of the PPy onto the nanofibers is governed by the oxidant type and its concentration in the electrospinning solution. At the best studied condition, a layer of PPy with the thickness of 1,000 nm is formed onto the PVA nanofibers surface using ammonium persulfate as oxidant. In contrast, surface coating was not observed in the case of FeClj as oxidant. The electrical conductivity of the coated nanofiber mats depends on the coating conditions and reaches to 10 S/cm. Large surface area of the sensor material with the electrochemical activity is one of the most important properties for sensor application. Since, it is obvious that the surface area of PPy coated non-... 

In Chapter 15, the applications of polymer nanofibers for biosensors is presented by S. Ramakrishna, N. L. Lala, H. Garudadhway, R. Ramaseshan and V. K. Ganesh. This chapter gives a brief description of biosensors and their existing Umitations. Much emphasis is focused on the replacement of the sensing interface with polymer nanofibers, and improvements in the sensor s performance have been highlighted. The various applications where nanofiber-based biosensors could possibly fit are also described. It is concluded that polymer nanofibers have great potential for sensor applications, and further research is needed in this area. 

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