In determining the etched track rate in solid-state nuclear track detectors, track lengths should be determined accurately. A method based on surface profilometry is proposed to determine the track lengths in CR-39 detectors through measurements of their replicas. Tracks from alpha particles with an incident energy of 4 MeV have been chosen to demonstrate the method. After irradiation and chemi...

Plasma-etching is a powerful tool in the determination of the resistance of the sublayer of skinned asymmetric hollow fiber membranes of poly (2,6-dimethyl-1,4-phenylene oxide). Using a resistance model and data provided by etched hollow PPO fiber membranes it is possible to predict the ultimate selectivity of the total membrane for helium over nitrogen and oxygen over nitrogen. From this model...

Abstract. The tools for interpreting fission-track data are evolving apace, but, even so, the outcomes cannot be better than data. Recent studies showed that track etching and observation affect confined-track length measurements. We investigated effects of grain orientation, polishing, on counts in apatite. Our findings throw light phenomena hence sample ages, whilst raising question: what as ...

In view of the proliferating applications involving membrane-based separation, inevitable membrane fouling phenomenon is well-studied. However, influence foulant shape on remained incompletely understood. Therefore, goal this study was to investigate behaviors by three different shapes latex particles (namely, peanut, pear and sphere) with similar mean diameters in range 3.5–3.8 ?m. External in...

In the recent past, extensive studies were performed on nanoscale materials. In particular, bismuth nanowires attracted large interest because of their extraordinary properties and possible application in thermoelectric devices. Regarding future implementations, the maximal current density jmax nanowires are able to carry is an important aspect. High current densities can cause voids in the wir...

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...