Clockwise from left to right: left upper shows a magnified SEM image of a broken thin-wall assembled SnO2 fiber. Left below is an array of breath sensors (Inset is an actual size of a breath sensor).

In a recent article published in the journal Micromachines, researchers developed a novel SnO 2 gas sensor integrated with a memristor structure, enhanced by a hafnium oxide (HfO 2) layer that not ...