The alarming effect of antibiotic resistance prompted the search for alternative medicine to resolve the microbial resistance conflict. Over the last two decades, scientists have become increasingly interested in metallic nanoparticles to discover their new dimensions. Green nano synthesis is a rapidly expanding field of interest in nanotechnology due to its feasibility, low toxicity, eco-friendly nature, and long-term viability. Some plants have long been used in medicine because they contain a variety of bioactive compounds. Silver has long been known for its antibacterial properties. Silver nanoparticles have taken a special place among other metal nanoparticles. Silver nanotechnology has a big impact on medical applications like bio-coating, novel antimicrobial agents, and drug delivery systems. This review aims to provide a comprehensive understanding of the pharmaceutical qualities of medicinal plants, as well as a convenient guideline for plant-based silver nanoparticles and their antimicrobial activity. K E Y W O R D Santimicrobial, eco-friendly, green synthesis, silver nanoparticles | INTRODUCTIONNanotechnology is a growing industry that can be used to create nanoscale structures. Nanoproducts are concerned with the approach and synthesis of particles with a diameter ranging from 1 to 100 nm. In living beings, nanotechnology is a combination of wet, dry, and computerised nanotechnology. Wet nanotechnology encompasses biological agents such as membranes, organs, and enzymes. Dry nanotechnology deals with surface science, physical, chemical properties, and the production of inorganic materials such as silicon and carbon. Modelling and simulation of complex nanometre-scale structures are part of computational nanotechnology [1]. Figure 1 depicts how these three disciplines were intertwined for optimal functionality. Nanoscale compounds can be distinguished by specific properties, opening up a wide range of applications, as well as the extension of science nanoscale discipline and research opportunities. It is used in a variety of Haajira Beevi Habeeb Rahuman and Ranjithkumar Dhandapani have contributed equally and share first authorship.

The paper presents preliminary results demonstrating the bactericidal properties of surface coatings created on metal and dielectric samples by evaporation of a colloidal solution of nanostructured carbon. A colloidal solution of nanocarbon was obtained using a high-voltage pulsed multi-spark discharge in ethanol with argon injection into the interelectrode space. The main properties of a colloidal solution and the parameters of its constituent nanoparticles are given. Bactericidal activity was assessed by seeding Escherichia coli (gram-negative) and Staphylococcus aureus (gram-positive) bacterial cultures on prepared slides. Results on suppression of bacterial colonization on samples coated with carbon nanoparticles are presented.