Journal
NANO LETTERS
Volume 12, Issue 11, Pages 5644-5648Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl302788g
Keywords
Electron beam trap; nanoscale manipulation; liquid cell; TEM; nanoparticle interaction; directed assembly
Categories
Funding
- US DOE Office of Science Early Career Research Program
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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 10(3)-10(4) (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.
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