Individual Metal Oxide Nanowires in Chemical Sensing: Breakthroughs, Challenges and Prospects

4.4.2 Chemical NanoSensors and Microsystems for Air Pollution Detection

“…Gas sensor platforms based on individual SnO 2 nanowires [3][4][5] were fabricated by means of Focused Ion Beam lithography [6]. In order to control the self-heating effect, currenttemperature calibration curves where determined for each device under test following a procedure described elsewhere [3][4][5].…”

“…On the other hand, unlike to the usual laboratory test conditions that apply gas pulsed on the sensors, the low thermal inertia systems allow applying the heating pulse only during the measurement moment as well as the intensity of this heating pulse allow to determine the heating temperature adapted to the detection of the target molecules. These promising advantages have launched many new efforts for integrate such sensors as element in a multifunctional system [3,4,5].…”