Strong Two-Mode Parametric Interaction and Amplification in a Nanomechanical Resonator

Cho, Sungwan; Cho, Sung Un; Jo, Myunglae; Suh, Junho; Park, Hee Chul; Kim, Sang Goon; Shim, Seung‐Bo; Park, Yun Daniel

doi:10.1103/physrevapplied.9.064023

Cited by 15 publications

(13 citation statements)

References 47 publications

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“…With the red pump amplitude is further increased, evident normal-mode splitting with the avoided-crossing characteristic can be observed in both mode 1 (Figure 2b) and mode 2 (Figure 2d), in which clearly demonstrates the strong coupling between the two modes. 25,26 The emergence of strong coupling indicates that the rate at which the phonons generated in mode 1 and 2 begins to exceed their rate of decay from both modes. 29,35 Similarly, to probe the oscillation dynamics of mode 2, a weak mechanical excitation at ωd near ω2 is applied to the microcantilever and at the same time, the same red pump is applied.…”

Section: Resultsmentioning

confidence: 99%

“…Among these methods, mechanical pump has received increasing attentions in recent years due to its unique characteristics. 9,[23][24][25] The mechanical pump is a non-degenerate parametric tuning method based on the energy transfer between two coupled mechanical modes which can be provided from one single resonator 19,26,27 or two coupled resonators. 20,23,28 By coupling the two mechanical modes, mechanical pump can imitate the optomechanical pump process to tune the oscillation dynamics of the mode, in which the electromagnetic mode (optical or microwave cavity) is replaced by a mechanical mode (phonon cavity) in the resonator.…”

mentioning

confidence: 99%

“…Up to now, a large number of fundamental studies have demonstrated the applications of the mechanical pump on many specially fabricated strong coupling systems, such as MEMS or NEMS, in which are usually operated in the low dissipative environments, i.e., vacuum or even low temperature. 9,[19][20][21][22][23][25][26][27][28][29][30][31][32][33][34] Whereas the investigations about the phonon-cavity coupling and mechanical pump as well as their practical applications for measurements in the high dissipative environments, such as ambient atmosphere, have rarely been reported for both the specially designed and commercially available resonator systems. This is because low dissipation conditions can significantly minimize the energy dissipated per vibration cycle of the resonator, 9 which largely promotes the generation of strong coupling thus mechanical pump can be effectively applied.…”

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confidence: 99%

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Strong phonon-cavity coupling and parametric interaction in a single microcantilever under ambient conditions

Zeng¹,

Zeng²

2021

J. Phys. D: Appl. Phys.

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Parametrically tuning the oscillation dynamics of coupled micro/nano-mechanical resonators through a mechanical pump scheme has recently attracted great attentions from fundamental physics to various applications. However, the special design of the coupled resonators and low dissipation operation conditions significantly restrict the wide application of this tuning technique. In this study, we will show that, under ambient conditions, mechanical pump can parametrically control the oscillation dynamics in a single commercial microcantilever resonator. A strong phonon-cavity coupling with cooperativity up to ~398 and normal-mode splitting are observed in the microcantilever. The strong parametric interaction of the phonon-cavity coupling enables using mechanical pump to achieve a 43 dB (3 dB) parametric amplification (cooling). By utilizing mechanical pump, the force sensitivity and signal-to-noise ratio of the frequency-modulation Kelvin Probe Force Microscopy can be significantly improved in the ambient environment. Furthermore, both single-mode and two-mode thermomechanical noise squeezing states can be created in the microcantilever via applying mechanical pump.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Strong phonon-cavity coupling and parametric interaction in a single microcantilever under ambient conditions

Zeng¹,

Zeng²

2021

J. Phys. D: Appl. Phys.

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“…Recently, there is much interest in parametric modulation techniques to manipulate the coupling element in coupled micro-and nanoscale resonators [11][12][13][14]. In this paper, for the first time, we propose a new sensing paradigm, utilizing the parametric modulation approach to minimize the coupling within a coupled resonant sensing element, in the context of acclerometer.…”

Section: Introductionmentioning

confidence: 99%

Toward High-Resolution Inertial Sensors Employing Parametric Modulation in Coupled Micromechanical Resonators

et al. 2019

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Highly accurate MEMS inertial sensors have a wide range of potential applications, including inertial navigation and seismometry. Conventional approaches to the implementation of inertial sensors reply on transducers that convert the external acceleration into changes in displacement of a proof mass or shifts in resonant frequencies. Recently, it has been demonstrated that inertial forces can also be measured through monitoring spatial energy distribution between two coupled microresonators. To extend this approach, we show that a weak dynamic coupling can be established through periodic modulation of the stiffness for a mechanically coupled microresonator system integrated as part of an accelerometer, enhancing the scale factor and resolution of the accelerometer. The resulting capability of parametric modulation also enabled the tuning of the operating point of the accelerometer through the modulation frequency. Utilizing this technique, we show that the scale factor of the accelerometer can be enhanced by a factor of 188, and a factor of 25 improvement in sensor resolution is demonstrated. Dynamic tuning of the sensor scale factor and inherent noise filtering is also demonstrated.

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“…In general, NPR emerges in systems with time-dependent mode couplings, which results in frequency mixing and parametric resonant responses at sums or differences of the system’s natural frequencies. While NPR has been well studied theoretically [31, 35, 36], actual implementation of NPR in M/NEMS systems has been limited [37–42] and has not been observed in large M/NEMS arrays to the best of our knowledge.…”

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confidence: 99%

Nondegenerate Parametric Resonance in Large Ensembles of Coupled Micromechanical Cantilevers with Varying Natural Frequencies

et al. 2018

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We investigate the collective dynamics and nondegenerate parametric resonance (NPR) of copla-nar, interdigitated arrays of microcantilevers distinguished by their cantilevers having linearly expanding lengths and thus varying natural frequencies. Within a certain excitation frequency range, the resonators begin oscillating via NPR across the entire array consisting of 200 single-crystal silicon cantilevers. Tunable coupling generated from fringing electrostatic fields provides a mechanism to vary the scope of the NPR. Our experimental results are supported by a reduced-order model that reproduces the leading features of our data including the NPR band. The potential for tailoring the coupled response of suspended mechanical structures using NPR presents new possibilities in mass, force, and energy sensing applications, energy harvesting devices, and optomechanical systems.

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Strong Two-Mode Parametric Interaction and Amplification in a Nanomechanical Resonator

Cited by 15 publications

References 47 publications

Strong phonon-cavity coupling and parametric interaction in a single microcantilever under ambient conditions

Strong phonon-cavity coupling and parametric interaction in a single microcantilever under ambient conditions

Toward High-Resolution Inertial Sensors Employing Parametric Modulation in Coupled Micromechanical Resonators

Nondegenerate Parametric Resonance in Large Ensembles of Coupled Micromechanical Cantilevers with Varying Natural Frequencies

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