Results 171 to 180 of about 1,956 (218)

Effect of etching conditions on pore shape in etched ion-track polycarbonate membranes

Radiation Measurements, 2009
We have undertaken a systematic investigation of the influence of methanol and applied transmembrane potential on the shape of conical pores produced by the track-etch technique. Heavy ion tracks in polycarbonate foils were chemically etched in an electrolytical cell under various conditions (different methanol content in the etchant, and applied ...
S. Karim, W. Ensinger, S.A. Mujahid, K. Maaz, E.U. Khan   +4 more
openaire   +1 more source

Investigation of nanopore evolution in ion track-etched polycarbonate membranes

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2007
Single heavy ion tracks in polycarbonate foils were chemically etched in an electrolytical cell under various conditions (different temperatures, etchant concentrations, and applied potentials), and the pore evolution was monitored by measuring the current through the membrane. Different zones of the latent tracks could be identified via changes in the
T.W. Cornelius, P.Yu. Apel, B. Schiedt, C. Trautmann, M.E. Toimil-Molares, S. Karim, R. Neumann   +6 more
openaire   +1 more source

Ion track etching of polycarbonate membranes monitored by in situ small angle X-ray scattering

Physical Chemistry Chemical Physics, 2021
In situ small angle X-ray scattering (SAXS) measurements of ion track etching of polycarbonate foils are used to directly monitor the formation of nanopores with high precision, including the early stages of etching.
Alexander Kiy, Christian Notthoff, Shankar Dutt, Mark Grigg, Andrea Hadley, Pablo Mota-Santiago, Nigel Kirby, Christina Trautmann, Maria E. Toimil-Molares, Patrick Kluth   +9 more
openaire   +2 more sources

Double metal replication of etched ion-track polymer membranes

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999
Abstract Metal membranes encompassing on large areas with pores having diameters in the micrometer range at densities up to 10 6 –10 7 per cm 2 can be produced by double metal replication. Polycarbonate foils irradiated with energetic heavy ions and etched are used as templates.
J Vetter, D Dobrev
openaire   +1 more source

Etched ion track polymer membranes for sustained drug delivery

Radiation Measurements, 2003
Abstract The method of track etching has been successfully used for the production of polymer membranes with capillary pores. In the present paper, micropore membranes have been prepared by swift heavy ion irradiation of polycarbonate (PC). PC films were irradiated with ions of gold, silicon and oxygen of varying energies and fluence.
Vijayalakshmi Rao, J.V. Amar, D.K. Avasthi, R. Narayana Charyulu   +3 more
openaire   +1 more source

Substrate-specific functional membranes based on etched ion tracks

Radiation Measurements, 1997
Abstract A novel thin membrane synthesized by copolymerizing diethyleneglycol-bis-allylcarbonate (CR-39) with a minor amount of acryloyl-L-proline methyl ester (A-ProOMe) was etched by an aqueous NaOH solution after a 6.19 MeV/n 84Kr ion irradiation to produce ion-track membranes.
M. Yoshida, M. Asano, H. Omichi, R. Spohr, R. Katakai   +4 more
openaire   +1 more source

Magnetotransport measurements on Bi2Te3 nanowires electrodeposited in etched ion-track membranes

Journal of Physics and Chemistry of Solids, 2019
Abstract We report on the magneto-transport properties of individual Bi2Te3 nanowires with diameters ranging from 25 nm to 120 nm fabricated by electrodeposition in etched ion-track membranes. The metallic behavior of all nanowires is typical for highly-degenerate semiconductors and the weak temperature dependence of the resistivity suggests a weak ...
Krieg, J., Giraud, Romain, Funke, H., Dufouleur, J., Escoffier, Walter, Trautmann, C., Toimil-Molares, M.E.   +6 more
openaire   +2 more sources

Formation of metal membranes by direct duplication of etched ion-track templates

Applied Physics A: Materials Science & Processing, 2003
A method for direct electrochemical metal duplication of pores in ion-track polymer membranes is described. It allows fabrication of metallic membranes using any metal, which is readily deposited by electroplating from aqueous solutions. The metal is deposited on one side of the template membrane, facing the anode, which is made conductive by a thin ...
D. Dobrev, R. Neumann, N. Angert, J. Vetter   +3 more
openaire   +1 more source

Controlling the Length of Conical Pores Etched in Ion‐Tracked Poly(ethylene terephthalate) Membranes

Small, 2009
AbstractAn etching procedure that allows for reproducible control of the length of conically shaped pores etched into poly(ethylene terephthalate) (PET) membranes is developed. At the lower etch temperature used (20 °C), the length of the pore is found to be linearly related to etch time.
Hitomi, Mukaibo, Lloyd P, Horne, Dooho, Park, Charles R, Martin   +3 more
openaire   +2 more sources

Performance of Ion Track-Etched Polyimide as Ion Exchange Membranes for Microbial Fuel Cells

ECS Meeting Abstracts, 2011
Abstract not Available.
Samuel Sonck, Elise Beuls, Laurent A. Francis   +2 more
openaire   +2 more sources