EPR SPECTROSCOPY APPLIED IN NANOMETROLOGY 
 
L. M. Giurgiu 

National Institute for Research and  Development of Isotopic and Molecular Technologies, P.O. Box 700, R-400293, Cluj-Napoca, Romania

A review concerning the application of Electron Paramagnetic Resonance (EPR) spectroscopy in nanometrology is given. 
I will point at those highlights as: (i) the conditions for the evaluation of the mean diameter corresponding to metallic and magnetic fine particles. (ii) the nanometrology informations revealed from the analysis of the linewidth and resonance field temperature dependencies. 
A particular attention is devotated to: (i) metallic nanoparticles electrodeposited in the channels of porous matrices (ii) ferromagnetic and superparamagnetic nanometric particles embedded in polymeric nanocomposites.
Some experimental results are presented and discussed.