Electron Beam Manipulation of Nanoparticles

We report on electron beam manipulation and simultaneous transmission electron microscopy imaging of gold nanoparticle movements in an environmental cell. Nanoparticles are trapped with the beam and move dynamically toward the location with higher electron density. Their global movements follow the...

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Bibliographic Details
Published in:Nano letters 2012-11, Vol.12 (11), p.5644-5648
Main Authors: Zheng, Haimei, Mirsaidov, Utkur M, Wang, Lin-Wang, Matsudaira, Paul
Format: Article
Language:English
Subjects:
Biophysics - methods
Clusters
Cross-disciplinary physics: materials science
rheology
Electron beams
Electron density
Electrons
Exact sciences and technology
Gold
Gold - chemistry
Imaging
Materials science
Metal Nanoparticles - chemistry
Microscopy, Electron, Transmission - methods
Movements
Nanocrystalline materials
Nanoparticles
Nanoparticles - chemistry
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Nanotechnology - methods
Particle Size
Physics
Trapping
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Summary:We report on electron beam manipulation and simultaneous transmission electron microscopy imaging of gold nanoparticle movements in an environmental cell. Nanoparticles are trapped with the beam and move dynamically toward the location with higher electron density. Their global movements follow the beam positions. Analysis on the trajectories of nanoparticle movements inside the beam reveals a trapping force in the piconewton range at the electron density gradient of 103–104 (e·nm–2·s–1)·nm–1. Multiple nanoparticles can also be trapped with the beam. By rapidly converging the beam, we further can “collect” nanoparticles on the membrane surface and assemble them into a cluster.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl302788g