Transmission electron microscope observation of a freestanding nanocrystal in a Coulomb potential well

Nanoscale
Sheng-Yong XuLian-Mao Peng

Abstract

Usually pure electrostatic charges cannot be utilized alone to form macro-sized three-dimensional electromagnetic traps for trapping charged particles. These traps need additional dynamic electromagnetic fields. We report here the observation of a CdSe nanocrystal floating over a carbon film in a transmission electron microscope. The nanocrystal was most likely trapped in a naturally formed, nanometre-sized 3D Coulomb potential well. The results indicated the possibility of developing a novel nanodevice for the trapping and manipulation of charged nanoparticles.

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Citations

Sep 29, 2011·Ultramicroscopy·Vladimir P Oleshko, James M Howe

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