High Q value Quartz Tuning Fork in Vacuum as a Potential Thermometer in Millikelvin Temperature Range

Človečko, M.; Grajcar, M.; Kupka, Martin; Neilinger, P.; Rehák, M.; Skyba, P.; Vavrek, F.

doi:10.1007/s10909-016-1696-4

Cited by 13 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have utilised a novel type of the pulsedemodulation technique (fig. 2 right) implemented successfully for the quartz tuning forks [14]. In contrast to the frequency sweeps technique there is an additional precise function generator providing the reference signal at frequency f ref for the Lock-in amplifier.…”

Section: Methodsmentioning

confidence: 99%

Study of the non-linear dynamics of micro-resonators based on a Sn-whisker in vacuum and at mK temperatures

Človečko,

Skyba,

Vavrek

2018

Preprint

View full text Add to dashboard Cite

The dynamics of micro-resonators (or any mechanical resonators) can be studied by two complementary methods allowing the measurements in two different domains: (i) in the frequency domain -by the frequency sweeps using cw-excitation, and (ii) in the time domain -by the pulse techniques, when the free-decay oscillations are investigated. To broaden the knowledge about the intrinsic mechanical properties of micro-resonators based on a Sn-whisker we used both methods. We show that the dynamics of the Sn-whisker can be described by a phenomenological theory of the Duffing oscillator. Furthermore, we present the results of theoretical analysis based on the Duffing's model provided in the time and frequency domains, and we show that these results are qualitatively the same with those measured experimentally.

show abstract

Section: Methodsmentioning

confidence: 99%

Study of the non-linear dynamics of micro-resonators based on a Sn-whisker in vacuum and at mK temperatures

Človečko,

Skyba,

Vavrek

2018

Preprint

View full text Add to dashboard Cite

show abstract

“…QTF-based sensors have recently gained significant interest owing to their attractive characteristics, such as high mechanical stability, quality factor, fast response time, and low cost, compared to conventional devices, including surface acoustic wave, quartz crystal microbalance, and microcantilever sensors [8]. These inherent properties of QTF have been harnessed in many applications, such as in detecting several physical and chemical properties, including density, viscosity, pressure, gas sensing, and temperature [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Quartz Tuning Fork Sensor-Based Dosimetry for Sensitive Detection of Gamma Radiation

et al. 2021

View full text Add to dashboard Cite

This study generally relates to nuclear sensors and specifically to detecting nuclear and electromagnetic radiation using an ultrasensitive quartz tuning fork (QTF) sensor. We aim to detect low doses of gamma radiation with fast response time using QTF. Three different types of QTFs (uncoated and gold coated) were used in this study in order to investigate their sensitivity to gamma radiations. Our results show that a thick gold coating on QTF can enhance the quality factor and increase the resonance frequency from 32.7 to 32.9 kHz as compared to uncoated QTF. The results also show that increasing the surface area of the gold coating on the QTF can significantly enhance the sensitivity of the QTF to radiation. We investigated the properties of gold-coated and uncoated QTFs before and after irradiation by scanning electron microscopy. We further investigated the optical properties of SiO2 wafers (quartz) by spectroscopic ellipsometry (SE). The SE studies revealed that even a small change in the microstructure of the material caused by gamma radiation would have an impact on mechanical properties of QTF, resulting in a shift in resonance frequency. Overall, the results of the experiments demonstrated the feasibility of using QTF sensors as an easy to use, low-cost, and sensitive radiation detector.

show abstract

“…It is generally known that when the standard quartz tuning forks oscillating in vacuum are cooled down to temperatures below ∼ 15 K, these resonators undergo a "thermodynamic" transition into the high Qvalue oscillation mode with the Q-value of the order of 10 6 or more [19,22]. In order to measure quartz tuning fork with high Q-value, instead of using a traditional technique of the frequency sweep with continuous voltage excitation, we adapted and applied a pulseddemodulation (P-D) technique (or heterodyning technique with pulsed excitation) [23]. The P-D technique transforms the frequency of the measured signal to lower values without losing information about the original frequency and allows reduction of the sampling rate and increases the resolution of the frequency measurements.…”

mentioning

confidence: 99%

Spontaneous emergence of van der Waals interaction in piezo-resonators - a road to phase coherence at mK temperatures

Človečko¹,

Skyba²,

Vavrek³

2016

Preprint

Self Cite

View full text Add to dashboard Cite

We present the experimental results on the spontaneous emergence of the phase coherence in the system of oscillating electric dipoles in quartz piezo-resonators caused by the van der Waals interaction. Spontaneous emergence of the phase coherence in these systems is manifested via temperature-dependent, extremely accurate tune-up of their resonance frequencies in 9th order with relative spectral line-width δf0/f0 less than 3.10 −8 (this number is comparable with that in lasers) along with the very high frequency stability characterized by the low values of the Allan deviations. We also show that the application of an incoherent (noise) excitation signal leads to a spontaneous formation of the phase coherent state, and that the dissipation processes do not affect this phase coherent state (i.e. the resonance frequency of the system). All above-mentioned signatures are typical characteristics for a Bose-Einstein condensate of excitations. Smallness of the relative spectral lime-width in quartz piezo-resonators opens their potential application as alternative time etalons.

show abstract

High Q value Quartz Tuning Fork in Vacuum as a Potential Thermometer in Millikelvin Temperature Range

Cited by 13 publications

References 28 publications

Study of the non-linear dynamics of micro-resonators based on a Sn-whisker in vacuum and at mK temperatures

Study of the non-linear dynamics of micro-resonators based on a Sn-whisker in vacuum and at mK temperatures

Quartz Tuning Fork Sensor-Based Dosimetry for Sensitive Detection of Gamma Radiation

Spontaneous emergence of van der Waals interaction in piezo-resonators - a road to phase coherence at mK temperatures

Contact Info

Product

Resources

About