Single Molecule Imaging Using aHighly Confined Optical Field ataTriangular Aperture

We demonstrate that scanning near-field optical microscopy based onaprobe witha triangular aperture iscapable ofimaging single fluorescent molecules with anoptical resolution of 30nm.Numerical simulations agree well withexperiment. ©2005 Optical Society ofAmerica OCIScodes: (180.5810) Scanning microscopy; (180.2520) Fluorescence microscopy