Interest for "in-situ" diagnostics of nanoparticles and clusters of nanoparticles with overall dimension smaller than 1 micron is sustained by two different kinds of motivation. On one hand, health risks. Correlation between pulmonary diseases and smaller (size 5 - 300 am) particles has been proved by recent epidemiological studies (see for example Donaldson et al., 1998 and references therein cited). The Exposure to PMz5 (particles equal or smaller than 2.5 microns in aerodynamic diameter) has been introduced by the US. Environmental Protection Agency (EP.A.) since 1996. Very recent studies (Sioutas et al., 1999) have focused on the realization and testing of personal particle samplers for particles smaller than 1.0 Ixm (PM1.0). On the other hand, the investigation and the diagnostic methods on nanoparticles are motivated by the material science research with application in the production of catalysts, ceramic composites, pigments, fire retarding materials, conductive pastes, electromagnetic components and electronic devices. Possible routes for production of nanomaterials are combustion, laser ablation, electric discharge, and deposition of particles in hypersonic plasma.
In-situ characterization of nanoparticle aggregates by polarized optical scattering: application to soot in flames
di Stasio S;
2000
Abstract
Interest for "in-situ" diagnostics of nanoparticles and clusters of nanoparticles with overall dimension smaller than 1 micron is sustained by two different kinds of motivation. On one hand, health risks. Correlation between pulmonary diseases and smaller (size 5 - 300 am) particles has been proved by recent epidemiological studies (see for example Donaldson et al., 1998 and references therein cited). The Exposure to PMz5 (particles equal or smaller than 2.5 microns in aerodynamic diameter) has been introduced by the US. Environmental Protection Agency (EP.A.) since 1996. Very recent studies (Sioutas et al., 1999) have focused on the realization and testing of personal particle samplers for particles smaller than 1.0 Ixm (PM1.0). On the other hand, the investigation and the diagnostic methods on nanoparticles are motivated by the material science research with application in the production of catalysts, ceramic composites, pigments, fire retarding materials, conductive pastes, electromagnetic components and electronic devices. Possible routes for production of nanomaterials are combustion, laser ablation, electric discharge, and deposition of particles in hypersonic plasma.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
