Related Experiment Video
Updated: Jun 4, 2026

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow
Published on: April 24, 2014
Nonvolatile gating effects on radicals-containing vanadium oxide nanowires by gas molecule absorption and diffusion
Yi-Xuan Hong1, Watson Kuo, Kuan-Jiuh Lin
1Department of Physics, National Chung Hsing University, Taichung, Taiwan.
Abstract:
The charge conduction of a single nanowire of radicals-containing vanadium oxides was experimentally studied and found to be modulated by different gas exposures, showing a gating effect by the adsorption and absorption of different gas molecules. After N(2) and O(2) gas are introduced, the nanowires show an abrupt increase of the resistance but show the opposite trend within a longer timescale of several ks. The introduction of N(2) and O(2) can respectively 'write' the nanowire into high and low resistance states, which are metastable in a high vacuum. The long-term gating effect which was attributed to the interlayer diffusion of the gas molecules can be registered on the nanowire in the high vacuum environment.
Related Concept Videos
Radical Reactivity: Overview
Radical Formation: Addition
Similar to charge conservation in chemical reactions, spin conservation is implicit for radical reactions. Accordingly, the product formed must possess an unpaired...
Radical Reactivity: Steric Effects
Along with electronic factors, steric factors also account...
Radical Anti-Markovnikov Addition to Alkenes: Mechanism
The mechanism starts with chain initiation, which involves two steps. In the first chain initiation step, a weak peroxide bond is homolytically cleaved upon mild heating to form two alkoxy radicals. In the second initiation step, a hydrogen atom is abstracted by the alkoxy radical...
Radical Reactivity: Intramolecular vs Intermolecular
Radical Reactivity: Nucleophilic Radicals

