Jana and Seth. 26 Nanomaterials Based Superhydrophobic and Antimi- crobial Coatings NanoWorld Journal Mini-Review Open Access https://doi.org/10.17756/nwj.2020-077 Malobi Seth and Sunirmal Jana* Specialty Glass Technology Division,CSIR-Central Glass and Ceramic Research Institute, India * Correspondence to: Dr. Sunirmal Jana Specialty Glass Technology Division CSIR-Central Glass and Ceramic Research Institute,196 Raja S.C. Mullick Road Jadavpur, Kolkata 700 032, West Bengal, India Tel: +91 33 2473 3496 Fax: +91 33 2473 0957 E-mail: sjana@cgcri.res.in Received: April 04, 2020 Accepted: July 07, 2020 Published: July 09, 2020 Citation: Jana S, Seth M. 2020. Nanomaterials Based Superhydrophobic and Antimicrobial Coatings. NanoWorld J 6(2): 26-28 Copyright: © 2020 Jana and Seth. Tis is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY) (http://creativecommons. org/licenses/by/4.0/) which permits commercial use, including reproduction, adaptation, and distribution of the article provided the original author and source are credited. Published by United Scientifc Group Abstract Now-a-days, it is obvious that nanomaterials can play signifcant role in every sphere of our modern lives. On this aspect, use of nanomaterials in developing advanced functional materials or towards enhancement in surface related physical properties including superhydrophobic or superhydrophilic properties is very important both in fundamental and applied research. In this regard, most of the researchers agreed that there is a close relationship between superhydrophobicity of material surface with its antimicrobial activity. Tis review briefy highlights the use of some inorganic/organic based nanomaterials such as Ag, Cu, ZnO, TiO 2 as inorganic materials and graphene, chitosan nanoparticles as organic materials in making superhydrophobic antimicrobial coatings. Based on reported literature, possible mechanisms of antimicrobial activity of the nanomaterials derived superhydrophobic coatings have been discussed. It is worthy to note that the coatings with the advancement in self-cleaning and anti-biofouling as well as superhydrophobic and antimicrobial properties are highly potential for enormous applications in biomedical felds including medical textiles, personal protective equipment (PPE), surgical appliances, biodevices and so on. In this review, the challenges and future prospect of the nanomaterials based superhydrophobic coatings have also been discussed briefy. Tis mini review may encourage researchers towards development of superhydrophobic and antimicrobial coatings on various substrates like plastics, glasses, cotton fabrics for making PPE to protect the dedicated medical / healthcare personnel from the currently pandemic COVID-19 disease caused by severe acute respiratory syndrome coronavirus 2. Keywords Nanomaterials, Superhydrophobic coatings, Antimicrobial coatings Introduction Inspired by a special surface property of insect wings or lotus leaf, the superhydrophobic materials have attracted tremendous attention to materials researchers towards development of such materials for a wide range of applications including healthcare and biomedical kits / devices [1]. Superhydrophobic surfaces are capable to exhibit static water contact angle (SCA) ≥150° and water sliding angle (WSA) ≤10°. Te surface of these materials typically consists of hierarchical surface texture with micro-nano scale surface roughness and a layer of low surface energy material [2]. Te presence of low surface energy material prevents adhesion/penetration of water molecule into the surface by the formation of air pockets between the hierarchical rough surface structure. Now-a-days, various nanomaterials have been used to generate desired hierarchical surface roughness. Among these, metal and metal oxide-based nanomaterials such as Ag [3], Cu