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High quality factor tuning fork resonators with various resonance frequencies

Oh, Chan Young ; Hwang, Jonggeun ; Jhe, Wonho

Journal of the Korean Physical Society, 2023, Vol.82 (4), p.411-419 [Periódico revisado por pares]

Seoul: 한국물리학회

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  • Título:
    High quality factor tuning fork resonators with various resonance frequencies
  • Autor: Oh, Chan Young ; Hwang, Jonggeun ; Jhe, Wonho
  • Assuntos: Accelerometers ; Actuators ; Crystal defects ; Crystallinity ; Frequency ranges ; Machining ; Mathematical and Computational Physics ; Original Paper - Condensed Matter ; Particle and Nuclear Physics ; Physics ; Physics and Astronomy ; Q factors ; Resonators ; Scrap ; Silicon nitride ; Tantalum ; Theoretical ; Three dimensional printing ; Tuning
  • É parte de: Journal of the Korean Physical Society, 2023, Vol.82 (4), p.411-419
  • Descrição: We demonstrate that the designed and fabricated tuning fork resonators have quality factors of about 10 3 –10 4 in the diverse frequency range from 50 Hz to 10 kHz in ambient condition. Metal and ceramic materials such as tantalum, steel, silicon nitride are used as resonator materials for high quality factors with minimal loss of mechanical energy. Resonators of various sizes with a tuning fork shape are realized by metal 3D printing method as well as metal machining process. We show that the increase in crystallinity of the 3D printed PLA tuning fork via annealing leads to an increase in quality factor, by which we confirm that the material to be used as a resonator should be with high crystallinity rather than an amorphous state. In addition, since the quality factor depends on the mass symmetry of both prongs for the case of a tuning fork-type resonator, we improve the quality factor by matching the position and mass of the displacement-sensing accelerometer and the displacement-inducing actuator. The quality factor differences between predicted quality factor and measured one indicate that there are specific defects inside the material used as a resonator, which will be useful when the various-frequency tuning forks are employed as a highly sensitive force sensing resonator in the dynamic force microscopy and spectroscopy.
  • Editor: Seoul: 한국물리학회
  • Idioma: Coreano;Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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