1/f noise in gold nanoparticle chemosensors
نویسندگان
چکیده
We present a systematic study of low-frequency noise in Au nanoparticle chemosensors. All the sensors we have studied exhibit 1 / f-type noise at low frequencies. The magnitude of the 1/ f noise was smaller in devices with a larger device area, indicating that the 1/ f noise is caused by intrinsic processes. The noise amplitude was found to be strongly temperature dependent between 40–300 K, with a local peak at around 100 K, and weakly dependent below 40 K. The noise data could not be fit by a single activated process indicating that multiple noise processes must be present in our sensors. © 2005 American Institute of Physics. fDOI: 10.1063/1.1865324g
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