A Single Palladium Nanowire Via Electrophoresis Deposition Used as a Ultrasensitive Hydrogen Sensor

作者：Hu Yushi^*; Perello David; Mushtaq Usman; Yun Minhee

来源：IEEE Transactions on Nanotechnology, 2008, 7(6): 693-699.

DOI：10.1109/TNANO.2008.2005978

• Electrophoresis deposition
• hydrogen sensor
• single nanowire
• palladium (Pd)

We have successfully fabricated and demonstrated the use of a single metallic nanowire as a hydrogen sensor with extremely high sensitivity via a very simple fabrication process. In this paper, single palladium (Pd) nanowires were electrodeposited within 100-nm-wide polymethylmethacrylate nanochannels using a Pd electrolyte solution. Via this method, nanowires were grown with widths ranging from 50 to 100 run, and lengths from 3 to 7 mu m. The nanowires were successfully used to sense hydrogen concentrations as low as 5 ppm at room temperature. The growth control of single I'd nanowires, as well as the primary sensing mechanism, is addressed in detail in this paper.

• 出版日期2008-11