Related Experiment Video
Updated: Feb 3, 2026

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay
Published on: February 28, 2015
The interplay between structure and function in redox-based resistance switching
Anthony J Kenyon1, Manveer Singh Munde, Wing H Ng
1Department of Electronic & Electrical Engineering, UCL, London WC1E 7JE, UK. a.kenyon@ucl.ac.uk.
Abstract:
We report a study of the relationship between oxide microstructure at the scale of tens of nanometres and resistance switching behaviour in silicon oxide. In the case of sputtered amorphous oxides, the presence of columnar structure enables efficient resistance switching by providing an initial structured distribution of defects that can act as precursors for the formation of chains of conductive oxygen vacancies under the application of appropriate electrical bias. Increasing electrode interface roughness decreases electroforming voltages and reduces the distribution of switching voltages. Any contribution to these effects from field enhancement at rough interfaces is secondary to changes in oxide microstructure templated by interface structure.
Related Concept Videos
Balancing Redox Equations
Structural Protein Function
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
Structural Protein Function
Redox Reactions
Redox Reactions
Fruit Development, Structure, and Function

