Title :
Polyaniline nanofiber gas sensors by direct-write electrospinning
Author :
Chen, Dajing ; Guo, Xishan ; Wang, Zhen ; Wang, Pengbo ; Chen, Yuquan ; Lin, Liwei
Author_Institution :
Univ. of California, Berkeley, CA, USA
Abstract :
Electrospum polyaniline nanofibers doped with palladium nanoparticles have been demonstrated for hydrogen sensing in the formation of a chemresistor. These nanofibers have been deposited as single nanofibers across two gold electrodes by means of near-field electrospinning without using the conventional lithography process. These palladium nanoparticle based chemresistors have recorded 1.8% resistance change in the environment with 0.3% hydrogen concentration. These nanofibers sensors are flexible with good reversibility and potentially versatile by doping with different particles. As such, nanofiber-based sensors could be promising for environmental and industrial applications.
Keywords :
conducting polymers; doping; electrochemical electrodes; electrospinning; gas sensors; gold; nanolithography; nanoparticles; nanosensors; palladium; polymer fibres; direct-write electrospinning; electrospum polyaniline nanofibers; environmental application; gold electrodes; hydrogen concentration; hydrogen sensing; industrial application; lithography process; nanoparticle based chemresistors; near-field electrospinning; polyaniline nanofiber-based gas sensor; Chemical sensors; Nanoparticles; Optical fiber sensors; Palladium; Polymers;
Conference_Titel :
Micro Electro Mechanical Systems (MEMS), 2011 IEEE 24th International Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-9632-7
DOI :
10.1109/MEMSYS.2011.5734689
