Title :
Determination of alkanes in aqueous solution using gold nanoparticle chemiresistors: Dynamic response characteristics
Author :
Chow, Edith ; Raguse, Burkhard ; Müller, Karl-Heinz ; Davies, Erika ; Wieczorek, Lech ; Cooper, James S. ; Hubble, Lee
Author_Institution :
Mater. Sci. & Eng., Future Manuf. Flagship, CSIRO, Lindfield, NSW, Australia
Abstract :
The electrical impedance change and response time of chemiresistor sensors based on gold nanoparticles capped with 1-hexanethiolate ligands were investigated for several organic analytes dissolved in aqueous solution. Analytes that partitioned strongly into the nanoparticle film resulted in greater impedance changes and longer response times than analytes which had a smaller partition coefficient.
Keywords :
chemical sensors; gold; nanoparticles; organic compounds; thin film resistors; 1-hexanethiolate ligands; Au; alkanes; aqueous solution; electrical impedance; gold nanoparticle film chemiresistor sensor; organic analytes; Chemical sensors; Films; Gold; Impedance; Nanoparticles; Sensors; Time factors; alkanes; chemiresistors; gold nanoparticles; sensors;
Conference_Titel :
Nanoscience and Nanotechnology (ICONN), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5261-3
Electronic_ISBN :
978-1-4244-5262-0
DOI :
10.1109/ICONN.2010.6045221
