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

Abstract

In situ small angle X-ray scattering (SAXS) measurements of ion track etching of polycarbonate foils are used to directly monitor the selective dissolution of ion tracks with high precision, including...

SAXS data modelling for the characterisation of ion tracks in polymers

“…The Core Transition Model would be more suitable for this case, which is time-saving and makes the complex analysis of the structural change trend easier. 58 For the following characterization work of ion tracks, we choose the Core Transition Model for convenience.…”

“…SAXS is non-destructive and well suited to analyse the size, shape, and spatial correlation of objects in the nanometre range without special requirements for sample preparation. 55,56 This technique has been successfully applied to study tracketched nanopores [57][58][59][60][61] and ion tracks in polymers and inorganic materials. 57,[62][63][64][65] One of the most widely used models to fit the SAXS patterns from ion tracks is a simple cylinder approximation.…”

Cu Nanowire Networks with Well-Defined Geometrical Parameters for Catalytic Electrochemical CO2 Reduction

“…42 To selectively remove the ion tracks and convert them into open cylindrical nanopores, the foils were immersed in 6 M sodium hydroxide (NaOH) solution at 50 °C. Under these conditions, the pore size increases with a radial etching rate of ∼12−15 nm/min 43,44 To stop the etching process, the polymer foils were removed from the solution and immersed consecutively in two different containers with deionized water for 10 min each.…”

Highly Rectifying Conical Nanopores in Amorphous SiO2 Membranes for Nanofluidic Osmotic Power Generation and Electroosmotic Pumps

“…Solid-state nanopore membranes can be manufactured in a wide range of materials such as semiconductors, − polymers, − alumina, carbon, graphene, borophene, and MoS 2 with only a single or multiple , pores depending on the material and fabrication technique. One major challenge in current nanopore technology is to combine the high throughput rates that nanopores in ultrathin membranes provide with highly asymmetric transport properties characteristic of long, conical nanopores. , Furthermore, translating the performance of single pores to multipore systems without losing performance has proven to be challenging. , …”