Nanogallery
Nanogallery
TODAY DECEMBER 12, 2018

Electrostatic trapping of nanoparticles and molecules

Two electrodes (red) biased with a voltage produce an electric field around them with the maximum somewhere between the electrodes. This electric field polarizes nanoparticles and molecules which might be present near the electrodes and attracts them into
Two electrodes (red) biased with a voltage produce an electric field around them with the maximum somewhere between the electrodes. This electric field polarizes nanoparticles and molecules which might be present near the electrodes and attracts them into the gap.
Two electrodes (red) biased with a voltage produce an electric field around them with the maximum somewhere between the electrodes. This electric field polarizes nanoparticles and molecules which might be present near the electrodes and attracts them into the gap. Thus, nanoparticles can be "wired". A metallic Pd particle (yellow), about 20 nm in diameter, is attracted into the gap between two Pt electrodes (red) by such electrostatic trapping. The technique can be applied to any polarizabl nanoparticle or molecule. This is a general method for connecting single nanoparticle or molecules to macroscopic electrodes.


1. A. Bezryadin, C. Dekker, and G. Schmid, "Electrostatic trapping of single conducting nanoparticles between nanoelectrodes,"

Related Links:
  • Appl. Phys. Lett. 71, 12731275 (1997).
  • The substrate is then rinsed in a photoresist developer solution, in which all parts of the photoresist exposed to light are removed
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