Results 161 to 170 of about 16,055 (208)

Nanoporous Alumina Membranes as Diffusion Controlling Systems

Advanced Functional Materials, 2004
AbstractThis work describes the use of nanoporous alumina membranes for the diffusion of crystal violet molecules, encapsulated in the micelles of sodium dodecylsulfate (SDS), through pores ranging between 20 and 200 nm in diameter. The encapsulation of the crystal violet in SDS micelles is necessary in order to enlarge the size of the molecules to ...
S. Kipke, G. Schmid
openaire   +3 more sources

Nanoporous alumina-based interferometric transducers ennobled

Nanoscale, 2011
A high fidelity interferometric transducer is designed based on platinum-coated nanoporous alumina films. The ultrathin metal coating significantly improves fidelity of the interferometric fringe patterns in aqueous solution and increases the signal-to-noise ratio. The performance of this transducer is tested with respect to refractive index unit (RIU)
Dronov, Roman, Jane, Andrew, Shapter, Joseph G., Hodges, Alastair, Voelcker, Nicolas H.   +4 more
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Nanostructured silicon surfaces via nanoporous alumina

Chemical Communications, 2003
Nanostructured silicon surfaces are generated using nanoporous alumina membranes as stamps to imprint PMMA films on silicon, followed by reactive ion etching (RIE).
Kruse, Matthias, Franzka, Steffen, Schmid, Günter   +2 more
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Adsorption Hysteresis in Self-Ordered Nanoporous Alumina

Langmuir, 2008
We performed systematic adsorption studies using self-ordered nanoporous anodic aluminum oxide (AAO) in an extended range of mean pore diameters and with different pore topologies. These matrices were characterized by straight cylindrical pores having a narrow pore size distribution and no interconnections.
BRUSCHI, LORENZO, FOIS G, MISTURA, GIAMPAOLO, SKLAREK K, HILLEBRAND R, STEINHART M, GOSELE U.   +6 more
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Normal incidence birefringence in nanoporous alumina

Optical Materials, 2021
Abstract There are many works and interests focused on the development of optical sensors based on porous anodic aluminum oxide membranes (AAO). Normal incidence birefringence (BR) is present in AAO when is obtained from a monocrystalline aluminum substrate but his effect has been largely ignored since it is canceled out in a poly-crystalline ...
L. Forzani, C. Antonio Hernández, L.G. Cencha, H. Juárez Santiesteban, R.R. Koropecki, R. Urteaga   +5 more
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Applications of nanoporous alumina membranes

2001 International Semiconductor Conference. CAS 2001 Proceedings (Cat. No.01TH8547), 2002
Nanoporous alumina membranes were electrochemically prepared in sulfuric or phosphoric acid. After preparation they were used for microfiltration of biological media, such as human red blood cells and bovine serum albumin. The filtration efficiency was studied by UV-Vis absorption spectroscopy.
S. Pruneanu, G. Mihailescu, S. Neamtu, L. Olenic, L.P. Biro   +4 more
openaire   +1 more source

Adsorption on alumina nanopores with conical shape

Nanoscale, 2018
We report the first study of adsorption and evaporation of argon on conical alumina nanopores with different pore closures.
Lorenzo Bruschi, Giampaolo Mistura, Fabrizia Negri, Benoit Coasne, Yashar Mayamei, Woo Lee   +5 more
openaire   +4 more sources

Materials in nanoporous alumina

Journal of Materials Chemistry, 2002
Nanoporous alumina membranes are easily available by controlled anodization of aluminium surfaces in aqueous acids. Their properties, such as optical transparency, temperature stability, and pores of variable widths and lengths, make them a unique material to be filled by optically or magnetically interesting elements and compounds on the nanoscale ...
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Nanoporous Alumina Membranes for Enhancing Hemodialysis

Journal of Medical Devices, 2006
The nonuniformity of pore size and pore distribution of the current hemodialysis membrane results in low efficiency of uremic solute removal as well as the loss of albumin. By using nanotechnology, an anodic alumina membrane (ceramic membrane) with self-organized nanopore structure was produced.
Zhongping Huang, Weiming Zhang, Jianping Yu, Dayong Gao   +3 more
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Nanoporous alumina films for display devices

SPIE Proceedings, 2008
Anisotropic optical properties of free nanoporous anodic alumina films transparent in the visible spectrum for the restricted range of pore diameters and pore intervals are discussed. The basic experimental procedure is presented for the production of these films.
Vitaly Sokol, Sergey Gaponenko, Valentina Yakovtseva, George Litvinovich, Sergey Prislopsky, Andrey Lutich   +5 more
openaire   +1 more source