Publication

Optical trapping at the ultimate nanoscale in the near-field of plasmonic antennas

Olivier Martin, Andrea Lovera, Andreas Kern
2011
Conference Papers

Abstract

We study the trapping of nanoscopic objects in the near-field of plasmonic nanostructures and demonstrate experimentally that 10nm particles can be trapped in the 15nm gap of a dipole antenna. Applications for biosensing are discussed.

Official source

https://infoscience.epfl.ch/entities/publication/f67fa6e3-7d25-4e2e-a84b-c9b894c81085

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Olivier Martin, Andrea Lovera, Andreas Kern
2011
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f67fa6e3-7d25-4e2e-a84b-c9b894c81085

About this result

Related concepts (19)

Dipole antenna

In radio and telecommunications a dipole antenna or doublet is the simplest and most widely used class of antenna. The dipole is any one of a class of antennas producing a radiation pattern approximating that of an elementary electric dipole with a radiating structure supporting a line current so energized that the current has only one node at each end. A dipole antenna commonly consists of two identical conductive elements such as metal wires or rods.

Nanoparticle

A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead.

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An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. The individual antennas (called elements) are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase relationship. The radio waves radiated by each individual antenna combine and superpose, adding together (interfering constructively) to enhance the power radiated in desired directions, and cancelling (interfering destructively) to reduce the power radiated in other directions.

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