Fig. 6From: The Sensing Properties of Single Y-Doped SnO2 Nanobelt Device to AcetoneThe optical microscopic image of the pure SnO2 NB. Inset: the optical microscopic image of the Y-SnO2 NB (a); SEM image of a single SnO2 NB (b); SEM image of a single Y-SnO2 NB (c); I–V curves of the pure SnO2 and Y-SnO2 NB devices (d)Back to article page