A Kolmakov et al 2006 Nanotechnology 17 4014 doi:10.1088/0957-4484/17/16/003
A Kolmakov1, U Lanke2, R Karam3, J Shin4, S Jesse4 and S V Kalinin4
Show affiliationsWe have tested a range of imaging and spectroscopic techniques to address their ability to locally explore the interplay between surface reactivity and transport properties of the metal oxide nanostructure wired as a chemiresistor and chemi-FET. In particular, we used scanning surface potential microscopy (SSPM) to monitor the spatial and temporal particularities of the dc potential distributions in an operating device. We also successfully implemented synchrotron radiation-based photoelectron emission microscopy (PEEM) to explore submicron lateral compositional and electronic (work function) inhomogeneity on the surface of an individual nanowire sensor. These results open new avenues to visualize and spectroscopically address the chemical phenomena on an individual quasi-1D nanostructure both in real time and at nano- and mesoscopic level.
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces
81.07.-b Nanoscale materials and structures: fabrication and characterization
68.37.Xy Scanning Auger microscopy, photoelectron microscopy
85.35.-p Nanoelectronic devices
73.63.-b Electronic transport in nanoscale materials and structures
Instrumentation and measurement
Surfaces, interfaces and thin films
Issue 16 (28 August 2006)
Received 25 May 2006, in final form 23 June 2006
Published 14 July 2006
A Kolmakov et al 2006 Nanotechnology 17 4014
Y. Onose et al 2007 EPL 80 37005
J D Fowlkes et al 2006 Nanotechnology 17 5659
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