Cover Page December-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 12, Pages 919-923, December 2019
About Cover

IAAM recognizes the contribution of scientists towards the advancement of materials to global excellence with the ‘Researcher of the year’ award every year. Prof. Zhong Lin (Z. L.) Wang from Georgia Tech., USA and Prof. T. Venkatesan from Nano Core Research Center at National University of Singapore were recognized with this prestigious award in 2017 and 2018, respectively. This year, the award is presented to eminent physicist Prof. Enge Wang, Vice President of Chinese Academy of Sciences (CAS) and President Emeritus of Peking University, China, for his contribution towards the nanotechnology research and innovations. Advanced Materials Letters feels very honored and privileged to confer upon him the ‘Researcher of the Year’ award and dedicate the cover photo of December 2019 issue for his several years of diligence and uncountable achievements.


Characterization of Plasma Activated Water for Medical Applications

P.S Ganesh Subramanian*, R. Harsha, D.K. Manju, M. Hemanth, R. Lakshminarayana, M.S. Anand, S. Dasappa 

Indian Institute of Science, Bangalore, Karnataka, India

Adv. Mater. Lett., 2019, 10 (12), pp 919-923

DOI: 10.5185/amlett.2019.0041

Publication Date (Web): Nov 01, 2019

E-mail: psgs123xyz@gmail.com

Abstract

Non-thermal plasma discharge in air generates several species, including reactive oxygen and nitrogen species (RONS). If, plasma is generated above a water column, some of these species gets transferred into the water column below generating plasma activated water (PAW), which is known to have several applications. These applications are attributed to the reactive species generated by the plasma discharge. To cater specifically to each application, a complete chemical characterization of plasma discharge in air and PAW is vital, as each of these species have their own unique contribution to the application of PAW. In this work, analysis of the plasma discharge in air using optical emission spectroscopy (OES) and detailed characterization of PAW for its chemical constituents was done. In PAW, the parameters namely, pH, electrical conductivity , , and were quantified as a function of plasma exposure time. The values of  ( ) and  ( ) obtained in this study were about 50% and 130% higher respectively, than what has generally been reported. The antimicrobial nature of the PAW on Pseudomonas aeruginosa, one of the bacteria responsible for nosocomial infections was also tested, and PAW was able to inactivate the bacterium. © VBRI Press.

Keywords

Plasma activated water, nitrate, nitrite, hydrogen peroxide, dielectric barrier discharge plasma, pseudomonas. aeruginosa.

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