Publication

Modulation of the Work Function in Layer-by-Layer Assembly of Metal Nanoparticles and Poly-l-lysine on Modified Au Surfaces

Jean-Pierre Abid, Joseph Jose Kakkassery, Michel Carrara
2004
Journal Articles

Abstract

Layered surface: Particles with a diameter smaller than 10 nm can be organised in ordered multilayers that feature regular fluctuations of the work function. While the amplitude of the modulation is determined by the properties of the polypeptide and the layer-by-layer ordering, the work function of the nanoparticle-terminated surface is determined by the nature of the metal particle and its surface functionalisation (see graphic).

Official source

https://infoscience.epfl.ch/entities/publication/7be8ebd6-56b6-4531-8092-d157c2bf3971

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Jean-Pierre Abid, Joseph Jose Kakkassery, Michel Carrara
2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7be8ebd6-56b6-4531-8092-d157c2bf3971

About this result

Related concepts (21)

Double layer (surface science)

In surface science, a double layer (DL, also called an electrical double layer, EDL) is a structure that appears on the surface of an object when it is exposed to a fluid. The object might be a solid particle, a gas bubble, a liquid droplet, or a porous body. The DL refers to two parallel layers of charge surrounding the object. The first layer, the surface charge (either positive or negative), consists of ions which are adsorbed onto the object due to chemical interactions.

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.

Silver nanoparticle

Silver nanoparticles are nanoparticles of silver of between 1 nm and 100 nm in size. While frequently described as being 'silver' some are composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. Numerous shapes of nanoparticles can be constructed depending on the application at hand. Commonly used silver nanoparticles are spherical, but diamond, octagonal, and thin sheets are also common. Their extremely large surface area permits the coordination of a vast number of ligands.

Related publications (2)

Modulation of the Work Function in Layer-by-Layer Assembly of Metal Nanoparticles and Poly-l-lysine on Modified Au Surfaces

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