Proceedings ArticleDOI
A Mode-Localized Lorentz Force Magnetometer with 1.6μT/√Hz Resolution
Yan Zimu,Yongcun Hao,Li Wenmu,Zhao Zhang,Honglong Chang +4 more
- pp 1815-1818
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TLDR
In this article, the amplitude ratio (AR) instead of the frequency was used as the readout metric, and the sensitivity of AR was 7800 times higher than that of frequency.Abstract:
This paper for the first time reports a resonant magnetometer based on the mode localization phenomenon. The proposed sensor utilizes a 3 degrees-of-freedom (DoF) weakly coupled resonators (WCRs) as the mechanical sensing element, with massive grill structures on both sides for converting magnetic field strength to stiffness perturbation. Stiffness perturbation will cause a drastic variation in the mode shape owing to the mode localization phenomenon. We use the amplitude ratio (AR) instead of the frequency as the readout metric, and the sensitivity of AR is 7800 times higher than that of frequency. And the best resolution of the magnetometer is 1.6μT/√Hz in the range of 90mT.read more
Citations
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Proceedings ArticleDOI
A Mode-localized Tilt Sensor with Resolution of 2.4e-5 Degrees within the Range of 50 Degrees
TL;DR: In this paper, a mode-localized resonant tilt sensor based on 3 degree-of-freedom (DoF) weakly coupled resonators (WCRs) is proposed.
Proceedings ArticleDOI
A Mode-Localized Magnetometer with Resolution of $6.9\ \text{NT}/ \surd \text{Hz}$ Within the Range of 100 mT
TL;DR: In this article, a mode-localized magnetometer with 3 degrees-of-freedom (DOF) weakly coupled resonators coupled by F-shaped coupling beams is presented.
Journal ArticleDOI
Towards an Ultra Sensitive Hybrid Mass Sensor Based on Mode Localization without Resonance Tracking.
TL;DR: It is shown, both theoretically and experimentally, that this condition yields higher sensitivities and similar sensitivity ranges than that of resonance peak tracking while being less time consuming than a classical open-loop configuration due to the absence of frequency sweep.
Journal ArticleDOI
Modeling and Parameter Sensitivity Improvement in ΔE-Effect Magnetic Sensor Based on Mode Localization Effect
TL;DR: In this article , a mode-localized ΔE-effect magnetic sensor model is established theoretically and numerically based on the designed weakly coupled resonators with multi-layer film structure.
Highly Sensitive Mass Sensing Scheme via Energy Relocalization With a Coupled Three-Beam Array
TL;DR: In this article , a sensing theory is derived to predict the amplitude-frequency curve with respect to the effect of mass perturbation, where high linearity is observed for both amplitude changes and frequency shifts.
References
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Mode localization and eigenvalue loci veering phenomena in disordered structures
TL;DR: In this article, the effects of disorder on the modes of vibration of nearly periodic structures are investigated, and perturbation methods for the eigenvalue problem are applied to predict the occurrence of strong localization and eigen value loci veering.
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Ultrasensitive mass sensing using mode localization in coupled microcantilevers
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Journal ArticleDOI
A review on coupled MEMS resonators for sensing applications utilizing mode localization
Chun Zhao,Chun Zhao,Mohammad H. Montaseri,Graham S. Wood,Suan Hui Pu,Ashwin A. Seshia,Michael Kraft +6 more
TL;DR: In this article, the authors review a recent technology development based on coupled MEMS resonators that has the potential of fundamentally transforming MEMS Resonant sensors, including the mode localization effect.
Journal ArticleDOI
A High-Sensitivity Micromechanical Electrometer Based on Mode Localization of Two Degree-of-Freedom Weakly Coupled Resonators
TL;DR: In this paper, a high-sensitivity resonant electrometer based on the mode localization of two degree-of-freedom weakly coupled resonators (WCRs) is reported.
Journal ArticleDOI
Limits to mode-localized sensing using micro- and nanomechanical resonator arrays
TL;DR: In this article, the authors investigated the limits to sensitivity enhancement imposed on the vibration mode-localized sensors, by some of the fundamental physical noise processes, the bandwidth of operation and the noise from the electronic interfacial circuits.