Engineering the nanostructure of a polymer-nanocomposite film containing Ti-based core–shell particles to enhance dielectric response

Abstract

Nylon-6 based polymer-nanocomposite (PNC) dielectrics containing nano-regions of Ti-only and Ag + Ti have been manufactured by layer-by-layer deposition. By varying the thickness and deposition rate of individual layers, the PNC structure was manipulated at the nano-scale and then studied using various types of transmission electron microscopy (TEM). Enhanced PNC dielectric properties, with a dielectric constant k as high as ∼73, were shown to relate critically to in situ reactions and the detailed nano-arrangement of the resulting Ti (core)-TiOx (shell) and Ag nanoparticles.

Rational Regulation of Surface Free Radicals on TiO2 Nanotube Arrays via Ag2O–AgBiO3 towards Enhanced Selective Photoelectrochemical Detection

“…In addition, the high-magnification TEM image confirms the construction of our ternary nanoarrays. As shown in Figure 1 e, the interplanar spacing of 0.19, 0.17, and 0.23 nm can be ascribed to the (002) plane of TiO 2 , the (220) plane of Ag 2 O, and the (202) plane of AgBiO 3 , respectively [ 30 , 31 , 32 ]. The interface of lattice fringes between TiO 2 , Ag 2 O, and AgBiO 3 indicate the formation of a heterostructure, which promotes the electron transfer efficiency of nanoarrays in the PEC processes.…”

Fabrication of nanoscale features on ultra-thin glass-based dielectrics via self-masking and preferential etching to enhance capacitance

“…Although a number of surface patterning and roughening techniques [11], [12], [13] are used to obtain high-surface area features, an ideal technique would be the one that will allow large-scale processing of surface features that are relatively easy to metallise via vacuum-based thermal evaporation [14], [15], [16], which is a widely used lineof-sight deposition technique for fabricating capacitors. A patterning technique that is compatible with thermal evaporation and large-scale roll-to-roll processing [16] would be preferred over techniques that involve multi-step, and relatively complex processes such as lithography, which might be difficult to economically scale-up.…”

Nylon-6 based nanocomposite films for capacitor applications

“…Polymer-based nanocomposites (PNCs) [1] consisting of a comparatively polarisable filler embedded in a polymer matrix are promising candidates for capacitor applications because they can be processed into large area thin-films with attractive dielectric properties such as high dielectric constant k and breakdown strength [2], [3], [4] while maintaining low loss [5], [6]. However, difficulties involved in scaling-up PNC processing techniques such as spin coating and multistep chemical synthesis routes have limited the large-scale commercial manufacturing of high-k PNCs.…”