Dependence of track etching kinetics on chemical reactivity around the ion path
نویسندگان
چکیده
منابع مشابه
Heavy Ion Track-Etching of PEEK Membranes
Heavy ion tracks in polymer membranes can be transformed into microand nano-channels by means of wet-chemical etching. Up to now most commonly polycarbonate (PC), polyethylene therephthalate (PET) and polyimide (PI) membranes were employed for this purpose. For some applications such as proton conductive membranes for fuel cells, high resistance of the material against heat and solvents as well...
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By combining low-energy ion irradiation with asymmetric etching, conical nanopores of controlled geometry can be etched in polycarbonate (PC). Cone bases vary from 0.5 to 1μm. Top diameters down to 17 nm are reached.. When etching from one side, the pH on the other side (bathed in neutral or acidic buffer) was monitored. Etching temperature ranged from 65°C to 80°C. Pore shape characterization ...
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Quite recently, ion-track membranes of poly(vinylidene fluoride) (PVDF) have attracted a renewed interest for their applications to next-generation electrochemical devices such as fuel cells [1,2]. In order to produce tracketched pores in PVDF films, several kinds of etching solutions were previously employed. In most cases [3], a highly concentrated aqueous KOH solution with a KMnO4 additive w...
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Fission tracks in minerals, such as apatite and zircon, generated by energetic nuclear fragments that result from spontaneous fission of U, are used for determining the age and thermal history of Earth’s crust. Taken together with other techniques, the data infer rates of tectonic uplift and landscape evolution [1]. At elevated temperatures, these tracks shrink in size and fragment into section...
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The difficulties with and controversies surrounding the interpretation of electrophysiological data were highlighted in the recent Perspectives on Ion Permeation through membrane-spanning channels. The main issue was whether such data are more appropriately analyzed within the framework of chemical kinetics (Eyring’s Transition State Theory; Eyring, 1935) or the continuum electrodiffusional app...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2019
ISSN: 2045-2322
DOI: 10.1038/s41598-019-51748-y