Javad N Farahani et al 2007 Nanotechnology 18 125506 doi:10.1088/0957-4484/18/12/125506
Javad N Farahani1,4, Hans-Jürgen Eisler1,5, Dieter W Pohl1, Michaël Pavius2, Philippe Flückiger2, Philippe Gasser3,6 and Bert Hecht1,7
Show affiliationsA method for the fabrication of bow-tie optical antennas at the apex of pyramidal Si3N4 atomic force microscopy tips is described. We demonstrate that these novel optical probes are capable of sub-wavelength imaging of single quantum dots at room temperature. The enhanced and confined optical near-field at the antenna feed gap leads to locally enhanced photoluminescence (PL) of single quantum dots. Photoluminescence quenching due to the proximity of metal is found to be insignificant. The method holds promise for single quantum emitter imaging and spectroscopy at spatial resolution limited by the engineered antenna gap width exclusively.
07.79.Lh Atomic force microscopes
Issue 12 (28 March 2007)
Received 5 December 2006, in final form 15 January 2007
Published 23 February 2007
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Nicolas B. Cowan et al. 2009 ApJ 700 915
2004 Phys. Educ. 39 309
Suchitra E Sebastian et al 2008 J. Phys.: Condens. Matter 20 422203
Theodore Van Duzer et al 2002 Supercond. Sci. Technol. 15 1669
Jeong Young Park and P A Thiel 2008 J. Phys.: Condens. Matter 20 314012