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

ABSTRACT: Myoglobin single-electron transistors were investigated using nanometer-gap platinum electrodes fabricated by electromigration at cryogenic temperatures. Apomyoglobin (myoglobin without the 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.

SUBMITTER: Li D

PROVIDER: S-EPMC4802369 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature

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

Li Debin D Gannett Peter M PM Lederman David D

Nanotechnology 20120912 39

Myoglobin single-electron transistors were investigated using nanometer-gap platinum electrodes fabricated by electromigration at cryogenic temperatures. Apomyoglobin (myoglobin without the 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 b ...[more]

PMID: 22972432

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