The influence of the morphological characteristics of nanoporous anodic aluminium oxide (AAO) structures on capacitive touch sensor performance: a biological application

Abstract

This work is devoted to the study of the influence of different anodic aluminium oxide (AAO) morphologies on the sensitivity and performance of an AAO-based capacitive touch sensor.

Photocatalytic activation of TiO2-functionalized anodic aluminium oxide for electroless copper deposition

“…6 Alumina has a dielectric constant, higher than that of SiO 2 , which can effectively be fine-tuned by adjusting the filling factor of porous AAO, 7 which is advantageous for the fabrication of capacitors, 8,9 thin-film transistors, 10,11 RF antennae, 12 and chemical sensors. 3,5,13…”

“…6 Alumina has a dielectric constant, higher than that of SiO 2 , which can effectively be fine-tuned by adjusting the filling factor of porous AAO, 7 which is advantageous for the fabrication of capacitors, 8,9 thin-film transistors, 10,11 RF antennae, 12 and chemical sensors. 3,5,13 A crucial step in the fabrication of AAO-based devices is the deposition of conductive tracks, typically accomplished with physical vapour deposition (PVD) methods, thermal evaporation or magnetron sputtering. 3,7,9,13 These techniques, however, require a significant investment in both equipment and expertise, and their application may be challenging in the case of AAO due to its complex geometry and high-aspect-ratio pores.…”

Small-diameter magnetic and metallic nanowire arrays grown in anodic porous alumina templates anodized in selenic acid

“…The templates used for the fabrication of these nanostructures include anodic porous alumina (APA) [4], porous silicon template [5], carbon nanotubes [6], polymeric membranes [7] etc., among which the APA template has been mostly used in the preparation of nanotubes and nanowires. Controlling structural properties of APA has been of great practical importance for use in a variety of conventional and sophisticated materials and applications such as templates, filters, magnetic storage media, three-dimensional photonic crystals, plasmonic nanodevices, and thermal resistors [8][9][10][11]. Electrochemical methods have been more commonly used compared to chemical ones because the chemical growth of APAs is uncontrollable and difficult.…”

Understanding the thermal conductivity variations in nanoporous anodic aluminum oxide

“…), or 3D interconnected nanostructures, 8,9 as masks 10 for preparing nanodots or nanorod arrays or nanopatterned substrates, [11][12][13] and as substrates to deposit different materials on their surfaces and obtain nanohole or antidot arrays 14 or "holey" lms. 15,16 These structures have applications in many elds, such as catalysis, 4,17,18 biology and medical applications, 19,20 optical sensors, 21 magnetism, 7,14,22 spintronics, 6 and thermoelectricity, 23 to cite some.…”