There have been numerous studies on ion-track membranes of poly(ethylene terephthalate) (PET) and polycarbonate (PC), which are easily prepared by ion beam irradiation and subsequent alkaline etching. More importantly, the ion-track membranes of chemically and thermally stable polyimide (PI) and polyamide (PA), with controlled pore shape and size, may be required for the design of materials tha...

Track-etched membranes are polymer foils irradiated with swift heavy ions and subsequently wet-etched to create pores by dissolving defects formed along the ion trajectories. Under suitable conditions, the resulting pores are of cylindrical shape and uniform in size. Such membranes are commonly used for filtration or as templates for nanowires, grown inside the pores, e.g., by electrochemical d...

Swift heavy ion irradiation produces damage in polymers in the form of latent tracks. Latent tracks can be enlarged by etching it in a suitable etchant and thus nuclear track etch membrane can be formed for gas permeation / purification in particular for hydrogen where the molecular size is very small. By applying suitable and controlled etching conditions well defined tracks can be formed for ...

The development of next-generation adsorption, separation, and filtration materials is growing with an increased research focus on polymer composites. In this study, a novel blend chitosan (CS) polyethylene oxide (PEO) nanofiber mats was electrospun titanium (Ti)-coated terephthalate (PET) track-etched membranes (TMs) after-treatment by glutaraldehyde in the vapor phase for enhancing stability ...

Attention is drawn to the fact that the non-linear electrical currentvoltage characteristic of porous track-etched poly(ethylene terephtalate) membranes, reported by Wolf, Siwy, Korchev and Spohr in Cell. Mol. Biol. Lett. 4 (1999) 553-565, is very similar to that observed with cross-linked polyelectrolyte gel membranes with negatively charged fixed ionic groups (cation exchange membranes). This...

Protein Capture Sufi Ahmed and Timothy Barbari Track-etched membranes, arranged in a stack, have recently found application in highthroughput analytical techniques for protein expression profiling. Examples include sampling blood serum for antibodies or other proteins that indicate disease and blotting tissue sections for specific biomarkers that may be unique to tumor cells. If maintaining sam...

The vesicle extrusion method is used for preparing small (e.g., 100 nm diameter) monodisperse (uniform-sized) vesicles. Polycarbonate track-etched membranes with pores generally ranging from 50 to 200 nm in diameter and a hand-held mini-extruder are used for such a procedure. Extrusion through small (100 nm in diameter or smaller) pores also ensures that the vesicle population is predominantly ...