Nanoscale Three-Dimensional Charge Density and Electric Field Mapping by Electron Holographic Tomography.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36689622.
- Also identified by DOI 10.1021/acs.nanolett.2c03879 and PMC identifier 9912371.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
The operation of nanoscale electronic devices is related intimately to the three-dimensional (3D) charge density distributions within them. Here, we demonstrate the quantitative 3D mapping of the charge density and long-range electric field associated with an electrically biased carbon fiber nanotip with a spatial resolution of approximately 5 nm using electron holographic tomography in the transmission electron microscope combined with model-based iterative reconstruction. The approach presented here can be applied to a wide range of other nanoscale materials and devices.