Optical properties of metallic nanowires by valence electron energy loss spectroscopy

Abstract

The determination of intrinsic conductivity of nanowires (NWs) is essential to understand the charge transport behaviour involved in hybrid nanocomposites. These high conductive metallic fillers are good candidate to improve electrical properties of composites in aeronautic industry. The main difficulty is often to achieve the combination of both high spatial resolution and information on the physical properties as electrical conductivity. One of the suitable methods to give the desired information is electron energy loss spectroscopy (EELS) in scanning transmission electron microscopy (STEM) mode, especially in the low-loss region. This is demonstrated by studying the nickel and gold nanowire.

Low filled conductive P(VDF-TrFE) composites: Influence of silver particles aspect ratio on percolation threshold from spheres to nanowires

“…However, the maximum conductivity values obtained are close to 10 −1 S.m −1 , this level enables composites for the charge transport. The metallic nanowires supply the highest electrical conductivity of the associated metal bulk [8]. Some results obtained with metallic nanowires showed extremely low percolation thresholds [9,10] for metal particles (b5% vol) and reached the highest conductivity values [11,12] in homogeneous dispersed low filled composites (10 2 S.m −1 ).The mechanical behavior of the polymer matrix is maintained for a small amount of nanowires (5 vol%) [13].…”

Functional Sensory Nanostructures (Review)

“…Помимо электрических свойств, нанопроволоки обладают уникальными оптическими свойствами. Поток оптически закодированной информации можно регулировать для структур нанопроводов с нанометровой точностью на расстояниях многих микрон [97,98].…”