Nanopillar Arrays of Glassy Carbon by Anodic Aluminum Oxide Nanoporous Templates

Rahman, Saifur; Yang, Hong

doi:10.1021/nl0259479

Cited by 74 publications

(45 citation statements)

References 54 publications

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“…Because in disordered anodic porous alumina, plenty of the pore channels are not straight but branched from pore mouth to pore bottom, the deposited materials cannot be easily filled into the channels, during the commonly used methods such as electrochemical deposition, capillary force assisted nanoimprinting, or CVD [28,51,79,123,176], also the obtained nanowire, nanopillars, or nanotubes will not be straight. This requires that the growth of the pore channels during aluminum anodization should be a self-ordered process.…”

Section: Mild Anodization and Hard Anodizationmentioning

confidence: 99%

Research Background and Motivation

Cheng

2015

Electro-Chemo-Mechanics of Anodic Porous Alumina Nano-Honeycombs: Self-Ordered Growth and Actuation

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Anodic porous alumina, which exhibits a characteristic nano-honeycomb structure, has received increasing attention both experimentally and theoretically . Due to the quasi-periodic arrangement of the nanopore channels, narrow distribution of pore sizes, and interpore distances, relative ease to control the porous scales and self-ordering qualities by anodization conditions, excellent thermal stability, and very low-cost anodic porous alumina has been extensively used as templates for fabrication of various nanostructured materials such as nanodots [22][23][24], nanowires [25][26][27][28][29], nanotubes [30][31][32], and many other types [33][34][35], especially to realize the collective functioning of arrays of nanoelements which may not be realized by individual nanoelements [5,36], for applications in high-density magnetic media [37][38][39][40][41][42] [95,96]. For neutral electrolytes with pH in the range of 5-7, such as boric acid solution, ammonium borate, or tartrate aqueous solution, only barrier-type anodic alumina films with a uniform thickness will be formed by anodization [1,97]. The configuration of anodic porous alumina is composed of closely packed arrays of nanopore channels perpendicular to the aluminum substrate with pore diameters on the order of several to hundreds of nanometers [58,[93][94][95]98]. When viewed from the top, the nanopores are usually arranged in a quasi-hexagonal porous pattern. The in-plane arrangement of pore channels generally exhibits local variations with ordered zones separated with disordered zone boundaries, which is much similar to the crystallographic grains and grain boundaries of the Al substrate. However, the perfect ordered zones are at most several micrometers big even for highly self-ordered patterns, while the grain

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Section: Mild Anodization and Hard Anodizationmentioning

confidence: 99%

Research Background and Motivation

Cheng

2015

Electro-Chemo-Mechanics of Anodic Porous Alumina Nano-Honeycombs: Self-Ordered Growth and Actuation

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“…[6][7][8][9][10] AAO membrane is prepared from aluminum metal by electrochemical anodization in an electrolytic cell. While the technology of AAO and its application has a long history, 11 basic research on self-organization of nanostructures via AAO templates began much more recently, with self-organizing and prepattern guided anodization techniques.…”

Section: -5)mentioning

confidence: 99%

Simple Preparation of One-dimensional Metal Selenide Nanomaterials Using Anodic Aluminum Oxide Template

Piao¹

2012

Journal of Electrochemical Science and Technology

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:Highly ordered and perforated anodic aluminum oxide membranes were prepared by anodic oxidation and subsequent removal of the barrier layer. By using these homemade anodic aluminum oxide membranes as templates, metal selenide nanowires and nanotubes were synthesized. The structure and composition of these one-dimensional nanomaterials were studied by field emission scanning electron microscopy as well as transmission electron microscopy and energy dispersive Xray spectroscopy. The growth process of metal selenide inside anodic aluminum oxide channel was traced by investigating the series of samples using scanning electron microscopy after reacting for different times. Straight and dense copper selenide and silver selenide nanowires with a uniform diameter were successfully prepared. In case of nickel selenide, nanotubes were preferentially formed. Phase and crystallinity of the nanostructured materials were also investigated.

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“…These microstructures were fabricated by pyrolysis process of photoresist patterns formed by photolithography. Other methods utilize the combination of micromolding and nanotemplating [12,13], and nanopillar arrays of carbon by anodic aluminum oxide nanoporous templates [14].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of high aspect ratio carbon nanotube-carbon composite microstructures based on silicon molding technique

Toda

Kawai

et al. 2011

2011 16th International Solid-State Sensors, Actuators and Microsystems Conference

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Thispaper reports the fabrication and characterization of carbon nanotube (CNT)/carbon composite microstructures with higher Young's modulus than that of pyrolysis carbon. Hybrid microstructures consisted of CNT composite and Si are successfully fabricated by micromolding and pyrolysis of a resist (SU-8) mixed with CNTs. The photoresist mixed with CNTs is filled into a Si micromold fabricated by deep reactive ion etching (deep RIE), then the CNT/resist is converted to CNT/carbon microstructures using two-step high temperature pyrolysis process in an inert gas. Then, the Si substrate is patterned by deep RIE. The maximum aspect ratio of the composite structures is approximately 40.

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Nanopillar Arrays of Glassy Carbon by Anodic Aluminum Oxide Nanoporous Templates

Cited by 74 publications

References 54 publications

Research Background and Motivation

Research Background and Motivation

Simple Preparation of One-dimensional Metal Selenide Nanomaterials Using Anodic Aluminum Oxide Template

Fabrication of high aspect ratio carbon nanotube-carbon composite microstructures based on silicon molding technique

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