The aim of the present work is the characterization of particulate matter obtained from premixed flame of ethylene and air, conducted by measuring the values of optical band-gap and the I/V characteristics. The materials in object was collected by thermophoresis, obtaining particulate matter composed both by nanoparticles of organic carbon (NOC), and graphite-like soot particles, with two different ranges of band-gap. Organic nanometric particulate was divided by soot via solvent extraction and was then electrically investigated, showing the presence of a strong hysterisis in the I/V characteristics. A theoretical model based on charges transport between neighbouring particles due to tunnelling effect, typical of non-ohmic granular systems, was used to simulate electrical conduction through a soot particles layer.
Proprietà Elettriche del Particolato Carbonioso Prodotto da Fiamme Laminari Premiscelate Ricche di Combustibile
G De Falco;M Commodo;P Minutolo;
2012
Abstract
The aim of the present work is the characterization of particulate matter obtained from premixed flame of ethylene and air, conducted by measuring the values of optical band-gap and the I/V characteristics. The materials in object was collected by thermophoresis, obtaining particulate matter composed both by nanoparticles of organic carbon (NOC), and graphite-like soot particles, with two different ranges of band-gap. Organic nanometric particulate was divided by soot via solvent extraction and was then electrically investigated, showing the presence of a strong hysterisis in the I/V characteristics. A theoretical model based on charges transport between neighbouring particles due to tunnelling effect, typical of non-ohmic granular systems, was used to simulate electrical conduction through a soot particles layer.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
