Electron Beam Manipulation
of Nanoparticles
- Publication date
- Publisher
Abstract
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<sup>3</sup>–10<sup>4</sup> (e·nm<sup>–2</sup>·s<sup>–1</sup>)·nm<sup>–1</sup>. 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