Temperature-dependent electron transport through silver nanocrystal superlattices

Article Abstract:

Temperature-dependent electron transport is measured through three-dimensional close-packed alkanethiol-stabilized silver nanocrystal arrays using interdigitated array electrodes. At room temperature, structurally disordered silver nanocrystal superlattices exhibit a negative temperature coefficient of resistivity (TCR), characteristic of an insulator, whereas ordered face-centered cubic silver nanocrystal superlattices with particles that have the same average diameter and interparticle separation exhibit a positive TCR, characteristic of a metal.

Electron transport, Superlattices as materials, Superlattices

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Gating the conductivity of arrays of metallic quantum dots

Article Abstract:

Experimental and computational studies demonstrating that the conduction of compressed, two-dimensional arrays of hexagonally ordered Ag quantum dots (QDs) are varied through the influence of applied electric fields are reported. The theoretical approach suggests the quite different gating behavior observed for electrodes with a different Fermi energy than the gold electrodes used in the experiment.

Influence, Electrical conductivity, Electric fields

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Preparation of silver-latex composites

Article Abstract:

Some nanocomposite materials are investigated by transmission electron microscopy and UV-vis spectroscopy. A range of silver particle features is obtained, including even and uniform silver coatings in the nanometer size regime on the latex particles.

Usage, Electron microscopy, Latex

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