Rapid fabrication of iridescent alumina films supported on an aluminium substrate by high voltage anodization

Sun, Chunxin; Hao, Sheng-Zhen; Wang, Zhijun; Xu, Qin; Wang, Yongguo; Qi, Peng; Lan, Tian

doi:10.1016/j.optmat.2020.109937

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…The oxalic-NAA is often used to prepare photonic structures [73,74]. Fabrication of photonic crystals with improved color saturation preserving the aluminum substrate, which is possible due to introduction of short, high-voltage (250 V) anodization step subsequent to the conventional sinusoidal pulse anodization, was demonstrated by Sun et al [75]. The oxalic-NAA is also one of the most prominent examples with regards to the photoluminescence performance, exceeding that of the sulfuric-and the phosphoric-NAA and can be adjusted with fabrication conditions [76,77].…”

Section: Electrolyte Specific Naa Geometrymentioning

confidence: 99%

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

2021

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The development of aluminum anodization technology features many stages. With the story stretching for almost a century, rather straightforward—from current perspective—technology, raised into an iconic nanofabrication technique. The intrinsic properties of alumina porous structures constitute the vast utility in distinct fields. Nanoporous anodic alumina can be a starting point for: Templates, photonic structures, membranes, drug delivery platforms or nanoparticles, and more. Current state of the art would not be possible without decades of consecutive findings, during which, step by step, the technique was more understood. This review aims at providing an update regarding recent discoveries—improvements in the fabrication technology, a deeper understanding of the process, and a practical application of the material—providing a narrative supported with a proper background.

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Section: Electrolyte Specific Naa Geometrymentioning

confidence: 99%

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

2021

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“…[20d,e,g,h,63À65] More recently, the combination of NAA-PCs produced by Gaussian-like pulse anodization with thin films of gold has enabled the generation of Tamm plasmon resonances in NAA photonic-plasmonic hybrid structures (TMM-NAA-PCs). [66][67][68][69][70][71][72][73][74][75][76][77][78] Tran et al fabricated NAA-GIFs by Gaussian pulse anodization, followed by a pore widening treatment and deposition of a thin layer of gold (Figure 6d). The transmission spectrum of this NAA-based Tamm plasmon system featured a well-resolved, narrow, and intense Tamm resonance band associated with the strong and selective confinement of photons between the gold layer and dielectric PC system.…”

Section: Naa As An Effective Medium Platformmentioning

confidence: 99%

Nanoporous Anodic Alumina Photonic Crystals for Sunlight Harvesting Applications: A Perspective

et al. 2022

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Nanoporous anodic alumina (NAA) fabricated by anodization of aluminum is a versatile platform material with tailorable geometric, optical, and chemical features for specific light‐based technologies and applications. Recent advances in anodization technology have enabled a new generation of NAA‐based photonic crystals (PCs)—periodic dielectric nanoporous structures that selectively allow, forbid, and confine the flow of incoming electromagnetic waves of specific wavelengths across their structure. NAA–PCs provide exciting new opportunities to engineer light–matter interactions with versatility across the broad spectrum, from UV to IR. But despite these fundamental advances, demonstrations of sunlight‐harvesting technologies based on NAA–PCs are still limited. Herein, an up‐to‐date summary of recent advances in NAA–PC technology is provided, and proof‐of‐concept demonstrations and future pathways to propel this versatile platform material across sunlight‐harvesting technologies such as photocatalysis, photoelectrocatalysis, photothermal energy conversion, and solar cells are discussed.

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“…Moreover, they used, with success, prepared AAO oxide films covered by a layer of Ag as a colorimetric sensor for nitroaromatic detection [41]. The changes in layered AAO color, based on oxide thickness and/or nanopore diameter and arrangements made on each oxide layer, were investigated [45][46][47][48]. In this way, the photonic crystals characterized by very bright structural colors were fabricated [46,48].…”

Section: Introductionmentioning

confidence: 99%

“…The changes in layered AAO color, based on oxide thickness and/or nanopore diameter and arrangements made on each oxide layer, were investigated [45][46][47][48]. In this way, the photonic crystals characterized by very bright structural colors were fabricated [46,48].…”

Section: Introductionmentioning

confidence: 99%

Morphological and Optical Characterization of Colored Nanotubular Anodic Titanium Oxide Made in an Ethanol-Based Electrolyte

et al. 2021

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In this paper, the possibility of color controlling anodic titanium oxide by changing anodizing conditions of titanium in an ethanol-based electrolyte is demonstrated. Colored anodic titanium oxide was fabricated in an ethanol-based electrolyte containing 0.3 M ammonium fluoride and various amounts of deionized water (2, 3.5, 5, or 10 vol%), at voltages that varied from 30 to 60 V and at a constant anodization temperature of 20 °C. Morphological characterization of oxide layers was established with the use of a scanning electron microscope. Optical characterization was determined by measuring diffusion reflectance and calculating theoretical colors. The resulting anodic oxides in all tested conditions had nanotubular morphology and a thickness of up to hundreds of nanometers. For electrolytes with 3.5, 5, and 10 vol% water content, the anodic oxide layer thickness increased with the applied potential increase. The anodic titanium oxide nanotube diameters and the oxide thickness of samples produced in an electrolyte with 2 vol% water content were independent of applied voltage and remained constant within the error range of all tested potentials. Moreover, the color of anodic titanium oxide produced in an electrolyte with 2 vol% of water was blue and was independent from applied voltage, while the color of samples from other electrolyte compositions changed with applied voltage. For samples produced in selected conditions, iridescence was observed. It was proposed that the observed structural color of anodic titanium oxide results from the synergy effect of nanotube diameter and oxide thickness.

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Rapid fabrication of iridescent alumina films supported on an aluminium substrate by high voltage anodization

Cited by 10 publications

References 26 publications

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

Recent Advances in Nanoporous Anodic Alumina: Principles, Engineering, and Applications

Nanoporous Anodic Alumina Photonic Crystals for Sunlight Harvesting Applications: A Perspective

Morphological and Optical Characterization of Colored Nanotubular Anodic Titanium Oxide Made in an Ethanol-Based Electrolyte

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