Electro-nanopatterning of surface relief gratings on azobenzene layer-by-layer ultrathin films by current-sensing atomic force microscopy

Article Abstract:

The electro-nanopatterning and mechanism of pattern formation in azobenzene-containing layer-by-layer (LbL) ultrathin films is described using surface probe microscopy techniques. The anisotropic mass transport and polar alignment of the azobenzene-containing films is observed after applying the electric filed and heating the sample locally with the cantilever tip.

Azo compounds, Structure

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Nanopatterning and nanocharge writing in layer-by-layer quinquethiophene/phthalocyanine ultrathin films

Article Abstract:

A novel read-write device using a standard current-sensing atomic force is provided by nanometer-scale patterning and charging in layer-by-layer (LbL) ultrathin films of quinquethiophene (5Tn)/phthalocyanine (CuPS). The LbL self-assembly method is one of the most convenient techniques for fabricating molecularly controlled ultrathin multilayer films.

Nanotechnology, Thin films, Multilayered, Multilayered thin films

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Induced water condensation and bridge formation by electric fields in atomic force microscopy

Article Abstract:

An analytical model that describes how, in humid environments, the electric field near a sharp tip boosts the formation of water menisci and bridges between the tip and a sample is presented. The predictions of the model are compared with the experimental values of the jump-to-contact distances as a function of humidity and electric field.

Analysis, Water, Chemical properties, Condensation

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