The work shows that a multi-walled carbon nanotube (MWCNT) film can be used as the sensing element of a low-cost sensor for the alcoholic concentration in liquid solutions. For this purpose, they investigate the electrical resistance of the film as a function of the isopropanol concentration in a water solution. The analysis reveals a growing resistance with increasing isopropanol concentration and a fast response. The sensing element is re-usable as the initial resistance value is restored once the solution has evaporated. The electrical resistance increases linearly when the MWCNT film is exposed to common beverages with increasing alcoholic content. This work paves the way for the development of low-cost, miniaturised MWCNT-based sensors for quality monitoring and control of alcoholic beverages and general liquid solutions.
Multi-walled carbon nanotube films for the measurement of the alcoholic concentration
Filatrella, Giovanni;
2019-01-01
Abstract
The work shows that a multi-walled carbon nanotube (MWCNT) film can be used as the sensing element of a low-cost sensor for the alcoholic concentration in liquid solutions. For this purpose, they investigate the electrical resistance of the film as a function of the isopropanol concentration in a water solution. The analysis reveals a growing resistance with increasing isopropanol concentration and a fast response. The sensing element is re-usable as the initial resistance value is restored once the solution has evaporated. The electrical resistance increases linearly when the MWCNT film is exposed to common beverages with increasing alcoholic content. This work paves the way for the development of low-cost, miniaturised MWCNT-based sensors for quality monitoring and control of alcoholic beverages and general liquid solutions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
