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Real-time nanomechanical property modulation as a framework for tunable NEMS

Author

Listed:
  • Utku Emre Ali

    (University of Oxford)

  • Gaurav Modi

    (University of Pennsylvania)

  • Ritesh Agarwal

    (University of Pennsylvania)

  • Harish Bhaskaran

    (University of Oxford)

Abstract

Phase-change materials (PCMs) can switch between amorphous and crystalline states permanently yet reversibly. However, the change in their mechanical properties has largely gone unexploited. The most practical configuration using suspended thin-films suffer from filamentation and melt-quenching. Here, we overcome these limitations using nanowires as active nanoelectromechanical systems (NEMS). We achieve active modulation of the Young’s modulus in GeTe nanowires by exploiting a unique dislocation-based route for amorphization. These nanowire NEMS enable power-free tuning of the resonance frequency over a range of 30%. Furthermore, their high quality factors ( $$Q$$ Q > 104) are retained after phase transformation. We utilize their intrinsic piezoresistivity with unprecedented gauge factors (up to 1100) to facilitate monolithic integration. Our NEMS demonstrate real-time frequency tuning in a frequency-hopping spread spectrum radio prototype. This work not only opens up an entirely new area of phase-change NEMS but also provides a novel framework for utilizing functional nanowires in active mechanical systems.

Suggested Citation

  • Utku Emre Ali & Gaurav Modi & Ritesh Agarwal & Harish Bhaskaran, 2022. "Real-time nanomechanical property modulation as a framework for tunable NEMS," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29117-7
    DOI: 10.1038/s41467-022-29117-7
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    References listed on IDEAS

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    1. Vera Sazonova & Yuval Yaish & Hande Üstünel & David Roundy & Tomás A. Arias & Paul L. McEuen, 2004. "A tunable carbon nanotube electromechanical oscillator," Nature, Nature, vol. 431(7006), pages 284-287, September.
    2. Pavan Nukala & Chia-Chun Lin & Russell Composto & Ritesh Agarwal, 2016. "Ultralow-power switching via defect engineering in germanium telluride phase-change memory devices," Nature Communications, Nature, vol. 7(1), pages 1-8, April.
    3. Quirin P. Unterreithmeier & Eva M. Weig & Jörg P. Kotthaus, 2009. "Universal transduction scheme for nanomechanical systems based on dielectric forces," Nature, Nature, vol. 458(7241), pages 1001-1004, April.
    4. Pavan Nukala & Mingliang Ren & Rahul Agarwal & Jacob Berger & Gerui Liu & A. T. Charlie Johnson & Ritesh Agarwal, 2017. "Inverting polar domains via electrical pulsing in metallic germanium telluride," Nature Communications, Nature, vol. 8(1), pages 1-9, April.
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    Cited by:

    1. Peiliu Li & Xianfu Huang & Ya-Pu Zhao, 2023. "Electro-capillary peeling of thin films," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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