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Ferritin-Based Single-Electron Devices.

Jacqueline A Labra-Muñoz^1,2, Arie de Reuver², Friso Koeleman²

¹Department of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, Niels Bohrweg 2, 2300 RA Leiden, The Netherlands.

|May 28, 2022

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Researchers fabricated single-electron devices using horse-spleen ferritin. Stable, reproducible data confirmed Coulomb blockade as the primary transport mechanism, paving the way for ferritin

Area of Science:

Nanoscience and Nanotechnology
Biophysics
Materials Science

Background:

Ferritin, a naturally occurring protein cage, has potential for nanoscale electronic applications.
Understanding charge transport mechanisms in biological macromolecules is crucial for developing novel devices.

Purpose of the Study:

To fabricate and characterize single-electron devices utilizing horse-spleen ferritin nanoparticles.
To investigate the charge transport mechanisms through ferritin particles at low temperatures.
To explore the potential of ferritin-based devices for advanced characterization and applications.

Main Methods:

Fabrication of single-electron devices incorporating horse-spleen ferritin.
Low-temperature electrical measurements of current vs. voltage characteristics.

Keywords:

Coulomb blockade ferritin nanoelectronics single-electron transport

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Analysis of transport data using Coulomb blockade theory.

Main Results:

Stable and reproducible current-voltage characteristics were observed at low temperatures.
Experimental data strongly supported Coulomb blockade as the dominant charge transport mechanism.
Excellent agreement between experimental findings and theoretical Coulomb blockade models was achieved.

Conclusions:

Horse-spleen ferritin can function as a viable component in single-electron devices.
Coulomb blockade in ferritin enables single-particle level characterization of its properties, such as magnetic behavior.
Ferritin-based devices offer promising prospects for future electronic and biomedical applications.