OICC Press International Nano Letters 2228-5326 10 2 (June 2020) 2020 05 09 Antimicrobial study on gamma-irradiated polyaniline–aluminum oxide (PANI–Al2O3) nanoparticles 10.1007/s40089-020-00299-6 EN S. Ramakrishnan Department of Physics, Madura College (SF), Madurai, IN S. Rajakarthihan Department of Physics, Thiagarajar College, Madurai, IN Journal Article 2020 05 09 Abstract Metal oxide nanoparticles are currently as most encouraging as antimicrobial agents for diagnosis of diseases, in addition to pharmaceuticals. The antimicrobial activity of metal oxide nanoparticles currently exists due to the large surface area which ensures a broad range of reactions with bio-organics. Aluminum oxide (Al 2 O 3 ) nanoparticles have massive commercial applications and were studied for their antimicrobial behavior. The conducting material polyaniline (PANI) currently exists as a product of polymer which, when added to metal oxide, reduces the particle size in addition to increasing the antimicrobial activity. Both conducting and metal oxide material are added and irradiate with gamma radiation of co 60 sources to establish the study of microbial activity. This research attempts to elaborate the antimicrobial behavior of gamma-irradiated PANI–Al 2 O 3 in addition to its potential applications.