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Piezoresistivity in single DNA molecules

Author

Listed:
  • Christopher Bruot

    (Center for Bioelectronics and Biosensors, Biodesign Institute, School of Electrical, Computer, and Energy Engineering, Arizona State University)

  • Julio L. Palma

    (Center for Bioelectronics and Biosensors, Biodesign Institute, School of Electrical, Computer, and Energy Engineering, Arizona State University)

  • Limin Xiang

    (Center for Bioelectronics and Biosensors, Biodesign Institute, School of Electrical, Computer, and Energy Engineering, Arizona State University)

  • Vladimiro Mujica

    (Arizona State University)

  • Mark A. Ratner

    (Northwestern University)

  • Nongjian Tao

    (Center for Bioelectronics and Biosensors, Biodesign Institute, School of Electrical, Computer, and Energy Engineering, Arizona State University)

Abstract

Piezoresistivity is a fundamental property of materials that has found many device applications. Here we report piezoresistivity in double helical DNA molecules. By studying the dependence of molecular conductance and piezoresistivity of single DNA molecules with different sequences and lengths, and performing molecular orbital calculations, we show that the piezoresistivity of DNA is caused by force-induced changes in the π–π electronic coupling between neighbouring bases, and in the activation energy of hole hopping. We describe the results in terms of thermal activated hopping model together with the ladder-based mechanical model for DNA proposed by de Gennes.

Suggested Citation

  • Christopher Bruot & Julio L. Palma & Limin Xiang & Vladimiro Mujica & Mark A. Ratner & Nongjian Tao, 2015. "Piezoresistivity in single DNA molecules," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9032
    DOI: 10.1038/ncomms9032
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    Cited by:

    1. Jeffrey R. Reimers & Tiexin Li & André P. Birvé & Likun Yang & Albert C. Aragonès & Thomas Fallon & Daniel S. Kosov & Nadim Darwish, 2023. "Controlling piezoresistance in single molecules through the isomerisation of bullvalenes," Nature Communications, Nature, vol. 14(1), pages 1-13, December.

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