Title :
Design of nanosensing platform based on zinc oxide nanowire arrays
Author :
Gupta, Arpan ; Spryn, Mitchell ; Kim, B.C. ; Edwards, E. ; Brantley, Christina ; Ruffin, Paul
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alabama-Tuscaloosa, Tuscaloosa, AL, USA
Abstract :
In this work, we demonstrate fabrication of a nanosensing platform for detecting hazardous p-nitrophenol vapors. ZnO nanowire arrays were synthesized on insulating sapphire substrate through chemical vapor deposition process (CVD) in a customized furnace. Nanowire surfaces were chemically functionalized with an optically active receptor to achieve synergistic opto-electronic response from the device. Photoluminescence studies were conducted to validate optical sensing mechanism. Electrical measurements of the pristine and functionalized nanowire array devices provided evidence to support opto-electronic operation of the sensing device. Furthermore, a prospective circuit design to obtain, process and transmit data from an unmanned platform to a remote location is presented.
Keywords :
CVD coatings; insulation; nanofabrication; nanowires; optical fibre fabrication; optoelectronic devices; photoluminescence; sapphire; zinc compounds; CVD; ZnO; chemical vapor deposition process; circuit design; hazardous p-nitrophenol vapors; insulating sapphire substrate; nanowire array devices; nanowire arrays-based nanosensing platform; nanowire surfaces; optical sensing mechanism; optically active receptor; photoluminescence; synergistic optoelectronic response; Chemicals; Nanoscale devices; Optical sensors; Sensor arrays; Substrates; Zinc oxide;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572346
