Metallic nanoparticles are traditionally synthesized by wet chemical techniques, where the chemicals used are quite often toxic and flammable. This book deals with a cost effective and environment friendly technique for green synthesis of silver nanoparticles using different species of Ocimum which acts as reducing as well as capping agent. The important ingredients responsible for the formation of silver nanoparticles present in the leaf extract are triterpenes, flavonoids and eugenol.UV-Vis absorption spectroscopy was used to monitor the formation of silver nanoparticles and Charcterizations were done using, X-ray diffraction analysis, energy-dispersive spectroscopy, scanning electron microscopy, transmission electron microscopy and particle size analyzer.

A successful effort to Synthesize Magnetic Nanoparticles was achieved through co-precipitation & chemical synthesis route. The synthesized Magnetic nanoparticle shows very good applications in cancer treatment at various stages of oncogenicity as reported worldwide. A successful attempt was made to synthesize these nanoparticles for the above application.Since Fe2O3 is a potent ferromagnetic candidate, its use and applicability is very important and necessary in such kinds of treatments. Hence Fe2O3 was prepared using co-precipitation method, silica by sol-gel process and silica impregnated iron nanoparticles by chemical synthesis. Synthesized magnetic nanoparticles where characterized by XRD, FTIR, EDAX, SEM and TEM. These nanoparticles are used for hyperthermia cancer treatment at various levels of oncogenicity.

ABSTRACT: Humidity is a very common component in our environment, measurements and/or control of humidity is important not only for human comfort but also for a broad spectrum of industries and technologies. The constructive design of a good humidity sensor is a rather complicated topic, because high performance humidity sensors claim many requirements, including linear response, high sensitivity, fast response time, chemical and physical stability, wide operating humidity range and low cost. Humidity sensors are important devices that can be used to measure and monitor environmental humidity. The magnetic core-shell (Mg(x)Fe(1-x)O/SiO2) nanoparticle has shown great humidity sensing properties. There has been increasing interest in the design and fabrication of magnetic core-shell nanoparticle, due to their humidity sensing application. The present work deals with synthesis and characterization of Mg(x)Fe(1-x)O (x=0.1,0.2, 0.4) by echo friendly chemical combustion synthesis, Mg(x)Fe(1-x)O/Sio2 magnetic core-shell nanoparticle by chemical precipitation and humidity sensing application of magnetic core-shell nanoparticle. Keywords: XRD, TG-DTA, Particle Analyzer, FTIR, SEM, EDS, TEM