Giant, Voltage Tuned, Quality Factors of Single Wall Carbon Nanotubes and Graphene at Room Temperature
| Autor: | Pascal Vincent, Sorin Perisanu, M. Choueib, A. Pascale-Hamri, Philippe Poncharal, R. Diehl, Anthony Ayari, A. Descombin, Stephen T. Purcell |
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| Přispěvatelé: | Physique des nanostructures et émission de champ (PNEC), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2019 |
| Předmět: |
Nanostructure
Materials science Bioengineering Nanotechnology 02 engineering and technology Carbon nanotube law.invention NEMS [SPI]Engineering Sciences [physics] Quality (physics) law [CHIM]Chemical Sciences General Materials Science carbon nanotube [PHYS]Physics [physics] Nanoelectromechanical systems Graphene Mechanical Engineering graphene Q-factor General Chemistry Dissipation 021001 nanoscience & nanotechnology Condensed Matter Physics nanomechanics Q factor 0210 nano-technology Nanomechanics |
| Zdroj: | Nano Letters Nano Letters, American Chemical Society, 2019, 19 (3), pp.1534-1538. ⟨10.1021/acs.nanolett.8b04282⟩ |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | International audience; Mastering dissipation in graphene-based nanostructures is still the major challenge in most fundamental and technological exploitations of these ultimate mechanical nanoresonators. Although high quality factors have been measured for carbon nanotubes (>10$^6$) and graphene (>10$^5$) at cryogenic temperatures, room-temperature values are orders of magnitude lower (≃10$^2$). We present here a controlled quality factor increase of up to ×10$^3$ for these basic carbon nanostructures when externally stressed like a guitar string. Quantitative agreement is found with theory attributing this decrease in dissipation to the decrease in viscoelastic losses inside the material, an effect enhanced by tunable ”soft clamping”. Quality factors exceeding 25 000 for SWCNTs and 5000 for graphene were obtained on several samples, reaching the limits of the graphene material itself. The combination of ultralow size and mass with high quality factors opens new perspectives for atomically localized force sensing and quantum computing as the coherence time exceeds state-of-the-art cryogenic devices. |
| Databáze: | OpenAIRE |
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