Abstract
We demonstrate controlled manipulation of semiconductor and metallic nanoparticles(NPs) with 5–15 nm diameters and assemble these NPs into hybrid structures. Themanipulation is accomplished under ambient environment using a commercial atomic forcemicroscope (AFM). There are particular difficulties associated with manipulating NPs thissmall. In addition to spatial drift, the shape of an asymmetric AFM tip has to be takeninto account in order to understand the intended and actual manipulation results.Furthermore, small NPs often attach to the tip via electrostatic interaction and modify theeffective tip shape. We suggest a method for detaching the NPs by performing apseudo-manipulation step. Finally, we show by example the ability to assemble these smallNPs into prototypical hybrid nanostructures with well-defined composition and geometry.
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