Rational Design of Ultra-Short Anodic Alumina Nanotubes by Short-Time Pulse Anodization

Wang, Ye; Santos, Abel; Evdokiou, Andreas; Lošić, Dušan

doi:10.1016/j.electacta.2014.12.056

Cited by 56 publications

(41 citation statements)

References 31 publications

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“…AANTs were fabricated by a pulse anodization process, in which the anodization current density was periodically switched between hard anodization (HA) and mild anodization (MA) regimes in order to create layered structures and weakened conjunctions between cells and layers [27,29]. The resulting NAA structures clearly show periodical junctions between the interfaces of each layer.…”

Section: Fabrication Of Aants and Their Physicochemical Characterizationmentioning

confidence: 99%

Systematic in vitro nanotoxicity study on anodic alumina nanotubes with engineered aspect ratio: Understanding nanotoxicity by a nanomaterial model

et al. 2015

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Section: Fabrication Of Aants and Their Physicochemical Characterizationmentioning

confidence: 99%

Systematic in vitro nanotoxicity study on anodic alumina nanotubes with engineered aspect ratio: Understanding nanotoxicity by a nanomaterial model

et al. 2015

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“…v% of EtOH in order to prevent it from freezing at temperatures below 0⁰C. [41][42][43] Then, the anodization process was switched to pulse mode. In the course of this step, the current density was cyclically altered between high (J high = 1.12 mA cm -2 ) and low (J low = 0.28 mA cm -2 ) current density values in a stepwise fashion.…”

Section: Introductionmentioning

confidence: 99%

On The Generation of Interferometric Colors in High Purity and Technical Grade Aluminum: An Alternative Green Process for Metal Finishing Industry

Chen

Santos

et al. 2015

Electrochimica Acta

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“…The electrolyte solution was modified with 25 v% EtOH in order to prevent it from freezing at temperatures below 0⁰C. [52][53] The anodisation process, described in Fig. 1a started with a constant current density step performed at 1.12 mA cm -2 for 1 h. During this step, a thin layer of oxide with straight cylindrical nanopores was created and a homogeneous growth rate of the nanopores was achieved.…”

Section: Fabrication Of Naa-bpfs By Pseudo-stepwise Pulse Anodisationmentioning

confidence: 99%

Rational engineering of nanoporous anodic alumina optical bandpass filters

et al. 2016

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Herein, we present a rationally designed advanced nanofabrication approach aiming at producing a new type of optical bandpass filters based on nanoporous anodic alumina photonic crystals. The photonic stop band of nanoporous anodic alumina (NAA) is engineered in depth by means of a pseudo-stepwise pulse anodisation (PSPA) approach consisting in pseudostepwise asymmetric current density pulses. This nanofabrication method makes it possible to tune the transmission bands of NAA at specific wavelengths and bandwidths, which can be broadly modified across the UV-visible-NIR spectrum through the anodisation period (i.e. time between consecutive pulses). First, we establish the effect of the anodisation period as a means of tuning the position and width of the transmission bands of NAA across the UV -visible-NIR spectrum. To this end, a set of nanoporous anodic alumina bandpass filters (NAA-BPFs) are produced with different anodisation periods, ranging from 500 to 1200 s, and their optical properties (i.e. characteristic transmission bands and interferometric colours) are systematically assessed. Then, we demonstrate that the rational combination of stacked NAABPFs consisting of layers of NAA produced with different PSPA periods can be readily used to create a set of unique and highly selective optical bandpass filters with characteristic transmission bands, the position, width and number of which can be precisely engineered by this rational anodisation approach. Finally, as a proof-of-concept, we demonstrate that the superposition of stacked NAA-BPFs produced with slight modifications of the anodisation period enables the fabrication of NAA-BPFs with unprecedented broad transmission bands across the UV-visible-NIR spectrum. The results obtained from our study constitute the first comprehensive rationale towards advanced NAA-BPFs with fully controllable photonic properties. These photonic crystal structures could become a promising alternative to traditional optical bandpass filters based on glass and plastic.

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Rational Design of Ultra-Short Anodic Alumina Nanotubes by Short-Time Pulse Anodization

Cited by 56 publications

References 31 publications

Systematic in vitro nanotoxicity study on anodic alumina nanotubes with engineered aspect ratio: Understanding nanotoxicity by a nanomaterial model

Systematic in vitro nanotoxicity study on anodic alumina nanotubes with engineered aspect ratio: Understanding nanotoxicity by a nanomaterial model

On The Generation of Interferometric Colors in High Purity and Technical Grade Aluminum: An Alternative Green Process for Metal Finishing Industry

Rational engineering of nanoporous anodic alumina optical bandpass filters

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