Investigation of modified nanopore arrays using FIB/SEM tomography
MetadataShow full item record
The investigation of electrochemical processes at the interface of two immiscible electrolyte solutions (ITIES) is of great interest for sensing applications, and serves as a surrogate to the study of biological transport phenomena, e.g. ion channels. Alongside e-beam lithography, focused ion beam (FIB) milling is an attractive method to prototype and fabricate nanopore arrays that support nanoITIES. Within this contribution, we explore the capability of FIB/scanning electron microscopy (SEM) tomography to visualize the actual pore structure and interfaces at silica-modified nanoporous membranes. The nanopores were also characterized by atomic force microscopy (AFM) using ultra-sharp AFM probes to determine the pore diameter, and using scanning transmission electron microscopy (STEM) and energy dispersive X-ray (EDX) spectroscopy, providing additional information on the elemental composition of deposits within the pores. Si-rich particles could be identified within the pores as well as at the orifice that had faced the organic electrolyte solution during electrochemical deposition. The prospects of the used techniques for investigating the interface at or within FIB-milled nanopores will be discussed.
Showing items related by title, author, creator and subject.
Liu, Yang; Holzinger, A.; Knittel, P.; Poltorak, L.; Gamero-Quijano, A.; Rickard, William; Walcarius, A.; Herzog, G.; Kranz, C.; Arrigan, Damien (2016)The direct experimental characterization of diffusion processes at nanoscale remains a challenge that could help elucidate processes in biology, medicine and technology. In this report, two experimental approaches were ...
Microscopic model of carbonaceous nanoporous molecular sieves—anomalous transport in molecularly confined spacesKowalczyk, Poitr; Gauden, P.; Terzyk, A.; Furmaniak, S. (2010)To model the equilibrium and transport properties of carbonaceous molecular sieves (CMS)(i.e., carbon membranes, coals, activated carbons with ink-bottle pore geometry, etc.) the newmicroscopic turbostratic carbon pore ...
Ion-Transfer Electrochemistry at Arrays of Nanointerfaces between Immiscible Electrolyte Solutions Confined within Silicon Nitride Nanopore MembranesScanlon, M.; Strutwolf, J.; Blake, A.; Iacopino, D.; Quinn, A.; Arrigan, Damien (2010)Ion transfer across interfaces between immiscible liquids provides a means for the nonredox electrochemical detection of ions. Miniaturization of such interfaces brings the benefits of enhanced mass transport. Here, the ...