An ion interaction model has been described for simulating positive ion tracks in a variety of media with the capability of interfacing with several secondary electron transport codes. Data are presented for single-and double-differential cross-sections, binding energies, probability density distribution for delocalisation parameters for conductors and tissue, branching ratios and ionisation ef...

Here, we report a facile and straight-forward approach to incorporate amphoteric groups inside the single conical nanochannels. This was realized by direct chemical modification of the surface carboxyl groups with L-lysine chains whose positive and negative charges are very sensitive to the external pH. The chemically functionalised channels were characterized both theoretically and experimenta...

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 ...

We have been working on ion-track membranes of poly(vinylidene fluoride) (PVDF) because they have attracted a renewed interest for their applications to fuelcells [1]. There were two main conclusions: (i) The PVDF ion-track membranes can efficiently be prepared under milder etching conditions, i.e., without any oxidant additives in the alkaline etching solution [2]; and (ii) irradiation with io...

This paper presents the process development towards a new generation of nanostructured thermoelectric generators for power harvesting from small temperature gradients by using a combination of traditional silicon microfabrication techniques, electroplating and submicron ion-track nanolithography. Polyimide nanotemplates with pore diameters ranging from 30 nm to 120 nm were fabricated. Prelimina...

Magnetic skyrmions are deemed to be the forerunners of novel spintronic memory and logic devices. While their observation current-driven motion at room temperature have been demonstrated, certain issues regarding nucleation, stability, pinning, skyrmion Hall effect still need overcome realize functional Here, we demonstrate that focused He+-ion-irradiation can used create guide in racetracks. W...