Atomic force microscopy images obtained with C60 modified tips

Abstract

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Chemical and Biochemical Analysis Using Scanning Force Microscopy

“…Another popular way of constructing functionalized tips is by attaching micrometer-sized spheres directly onto the tip. This concept was first demonstrated by Ducker and co-workers who epoxied silica microspheres to tips with the aid of micromanipulators and either an optical microscope for micrometer-sized spheres or a scanning electron microscope for smaller-sized spheres. , Kim and co-workers have reported a similar concept using C 60 as have several other groups using polymeric particles. , Figure presents a scanning electron microscopy (SEM) image of a 16 μm polystyrene microsphere affixed to the end of a cantilever 7 Scanning electron micrograph of a 16 μm polystyrene sphere attached to a SFM cantilever.…”

Nanoscale 1,3,5,7-Tetrasubstituted Adamantanes and p-Substituted Tetraphenyl-methanes for AFM Applications

“…Herein, we describe the synthesis of several tetrahedrally shaped nanoscale molecules built around a 1,3,5,7-tetrasubstituted adamantane unit or else a para-substituted tetraarylmethane core . Given the high affinity that thiols, disulfides, and thiolacetates display toward gold, we included S atoms at the termini as a means to eventually anchor the molecular tip to a thin film of gold placed on a conventional AFM tip . We also demonstrate that 19 is sufficiently rigid and robust to be visualized using a conventional AFM tip while laying on an atomically flat mica surface.…”