Functionalized individual ZnO microwire for natural gas detection
Abbreviated Journal Title
Sens. Actuator A-Phys.
ZnO microwire; Sensor; Natural gas; Methane; Focused ion beam; LOW-POWER CONSUMPTION; SENSOR; FABRICATION; NANOSENSOR; NANOWIRE; METHANE; BUTANE; TIO2; SNO2; CH4; Engineering, Electrical & Electronic; Instruments & Instrumentation
A single ZnO microwire detector for the monitoring of natural gas species is described. Single-crystal ZnO microwires were synthesized using a carbothermal reduction vapor phase transport method. It was characterized by XRD, EDX, SEM. Raman and photoluminescence techniques. The sensor structure was fabricated by in situ lift-out method using focused ion beam (FIB) system. The prototype is then functionalized with palladium and used as sensing element. The main advantage of the FIB procedure is a quick verification/testing of concept and is compatible with micro/nanoelectronic devices. A response of 5% was obtained for a single ZnO microwire sensor at 2000 ppm natural gas in the air at room temperature. At 400 degrees C the response increases to 40%. Selectivity to different gasses was investigated and higher response was detected for natural gas. (C) 2012 Elsevier B.V. All rights reserved.
Sensors and Actuators a-Physical
"Functionalized individual ZnO microwire for natural gas detection" (2012). Faculty Bibliography 2010s. 2370.