Applications of nanoparticles of gamma Fe2O3 for hyperthermia in E.coli by Nd:YAG laser

TL;DR

This study investigates gamma Fe2O3 nanoparticles for hyperthermia treatment of E.coli using Nd:YAG laser radiation, demonstrating nanoparticle attachment and effects on bacterial growth.

Contribution

It introduces a novel application of gamma Fe2O3 nanoparticles with lysine for laser-induced hyperthermia in bacteria, including synthesis and attachment analysis.

Findings

Nanoparticles attach to E.coli cell walls via lysine.

Laser radiation absorption leads to bacterial growth inhibition.

Nanoparticles synthesized by DC arc plasma method.

Abstract

The paper explores the use of nanoparticles of gamma Fe2O3 for hyperthermia treatment of living organisms by absorption of 1064 nm radiations from Nd:YAG laser. Escherichia coli cells have been used as the model system for demonstrating the effect wherein lysine is used as an interface between the cell walls and the nanoparticles. Scanning Electron Microscopic observations have, exclusively, proved that attachment of nanoparticles of iron oxide along with lysine alone is responsible for absorption of above radiations. The quantitative estimation has been provided by growth rate measurements and protein assessment of the cells. The nanoparticles of gamma Fe2O3 were synthesized by DC arc plasma assisted gas phase condensation.