Manipulating nanoparticles with an electron tractor beam

By John Hewitt on October 22, 2012 at 12:04 pm

A group of scientists from Lawrence Berkeley National Laboratory and the National University of Singapore recently had their way with a 10nm particle made of gold. They used an electron beam, produced by a Transmission Electron Microscope (TEM) to tractor the nanoparticle with a piconewton force, enabling them to move it several microns in any direction at speeds in the range of 10nm/sec. Technically, the particle was partially constrained between two layers of silicon nitride and prevented from adhering to the hydrophilic walls by a coating of repellent protein, but the researchers had enough confidence in their methods to declare their beam, “a highly effective tool to manipulate nanoparticles at will.”

Read more: Manipulating nanoparticles with an electron tractor beam | ExtremeTech.

Home           Top of page