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Volume 89, Issue 24

9 December 2002
On the Cover

Plot of the optical potential in the region around two closely spaced Ag nanoparticles in water due to an EM wave. Electrodynamic calculations show that the force from even relatively weak incident intensities can be enhanced locally by surface plasmon resonances, becoming strong enough to deform the nanoparticles and to trap single molecules.

From the article:

Surface-Plasmon-Enhanced Optical Forces in Silver Nanoaggregates
Hongxing Xu and Mikael Käll
Phys. Rev. Lett. 89, 246802 (2002)

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