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arXiv · 1208.4184

An investigation into the feasibility of myoglobin-based single-electron transistors

Debin Li·Peter M. Gannet·David Lederman
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Abstract

Myoglobin single-electron transistors were investigated using nanometer- gap platinum electrodes fabricated by electromigration at cryogenic temperatures. Apomyoglobin (myoglobin without heme group) was used as a reference. The results suggest single electron transport is mediated by resonant tunneling with the electronic and vibrational levels of the heme group in a single protein. They also represent a proof-of-principle that proteins with redox centers across nanometer-gap electrodes can be utilized to fabricate single-electron transistors. The protein orientation and conformation may significantly affect the conductance of these devices. Future improvements in device reproducibility and yield will require control of these factors.

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Debin Li, Peter M. Gannet, David Lederman. 2012-08-21. An investigation into the feasibility of myoglobin-based single-electron transistors. https://doi.org/10.1088/0957-4484%2F23%2F39%2F395705

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