Cylindrical and Spherical Membranes of Anodic Aluminum Oxide with Highly Ordered Conical Nanohole Arrays
نویسندگان
چکیده
منابع مشابه
Self-ordered anodic aluminum oxide formed by H2SO4 hard anodization.
The self-ordering of nanoporous anodic aluminum oxide (AAO) in the course of the hard anodization (HA) of aluminum in sulfuric acid (H2SO4) solutions at anodization voltages ranging from 27 to 80 V was investigated. Direct H2SO4-HA yielded AAOs with hexagonal pore arrays having interpore distances D(int) ranging from 72 to 145 nm. However, the AAOs were mechanically unstable and cracks formed a...
متن کاملPhotoconductivity of Germanium Nanowire Arrays Incorporated in Anodic Aluminum Oxide
Photoconductivity of germanium nanowire arrays of 50 and 100 nm diameter incorporated into Anodic Aluminum Oxide (AAO) membranes illuminated with visible light is investigated. Photocurrent response to excitation radiation with time constants faster than 10 s were governed by absorption of incident light by nanowires, while photokinetics with time constants of the order of 10 s originates from ...
متن کاملA Highly Controllable Electrochemical Anodization Process to Fabricate Porous Anodic Aluminum Oxide Membranes.
Due to the broad applications of porous alumina nanostructures, research on fabrication of anodized aluminum oxide (AAO) with nanoporous structure has triggered enormous attention. While fabrication of highly ordered nanoporous AAO with tunable geometric features has been widely reported, it is known that its growth rate can be easily affected by the fluctuation of process conditions such as ac...
متن کاملAnodic aluminum oxide microchannel plates
A new material for microchannel plates (MCP) is proposed — anodic aluminum oxide. Microchannel plates made of this material may be much cheaper than with conventional lead glass MCP. Also a significantly smaller channel diameter (up to 70 nm) is easily achievable, which means better spatial resolution and the possibility to operate in strong magnetic fields. Methods and means are developed for ...
متن کاملFabrication of vacuum tube arrays with a sub-micron dimension using anodic aluminum oxide nano-templates
Vacuum tube arrays with a sub-micrometer dimension were fabricated by using anodic aluminum oxide (AAO) nano-templates. Ni nanowires deposited electrochemically inside the pores of the AAO nano-templates were used as the field emitters. The pores were sealed by means of angled evaporation of titanium. The field emission measurement was carried out in atmospheric environment outside of a vacuum ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Natural Science
سال: 2015
ISSN: 2150-4091,2150-4105
DOI: 10.4236/ns.2015.75026