Calculations of pulsation period of a toroidal bubble during diaphragm discharge in electrolyte

Medvedev, R. N.; Chernov, A. A.; Karpov, D. I.

doi:10.1016/j.ijheatmasstransfer.2013.05.009

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…With 3.6 Fr electrode under 281 Vpp, fOB decreases from 9.5 kHz to 5.5 kHz when increasing the driven frequency from 0.3 MHz to 30 MHz. Similar to previous study (7), fOB also decreases with the probe size (Fig. 4b).…”

Section: Resultssupporting

confidence: 90%

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Single Oscillating Bubble from Radiofrequency Fiber Electrode

Li¹,

Sankin²

2018

Proceedings of the 10th International Symposium on Cavitation (CAV2018)

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The radiofrequency (RF) power in the 0.3~30 MHz band is often used for coagulation, ablation, and modification of tissues in medicine while in the lower frequency band both shock waves and cavitation may occur, which has found applications in lithotripsy for stone fragmentation and water purification. In this study, we demonstrate that single oscillating bubble is produced at the electrode tip in cell culture medium, which avoids the random inception of cavitation in liquid. With highspeed image recordings and Fast Fourier Transform (FFT) spectrum analysis, the frequency of the bubble oscillations is found to be dependent on the driven radio frequency, electrode diameter and the supplied voltage. With microelectrodes that are incorporated into flexible fibers (2-6 Fr), sustained oscillation is generated in the frequency range of 5.7-17 kHz. The oscillation frequency decreases with the radio frequency and electrode diameter, while an optimum voltage exists to reach maximum frequency of bubble oscillation. The RF power supply also offers flexibility to control the bubble dynamics with different voltage waveforms, duty cycles and pulse repetition rate.

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Section: Resultssupporting

confidence: 90%

“…CAV18-05187 112~337 Vpp range with maximum fOB value around 17 kHz at 169 Vpp. Interestingly, similar trend is observed in (7) with direct current (DC) electrode.…”

Section: Resultssupporting

confidence: 78%

Single Oscillating Bubble from Radiofrequency Fiber Electrode

Li¹,

Sankin²

2018

Proceedings of the 10th International Symposium on Cavitation (CAV2018)

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“…Among the most successful are microcapillary boiling [11, 12], heating in a host liquid [13], pulse heating of a filament [14, 15]. Bubble nucleation and dynamics associated with the phenomena of cavitation [16], sonoluminescence [17, 18], laser induced heating of nanoparticles [19], and heterogeneous bubble formation in macroscopic pores [20] have also been areas of intense study recently.…”

mentioning

confidence: 99%

“…A single nanopore was fabricated with a focused ion beam machine in a free-standing silicon nitride membrane affixed to a silicon dioxide/silicon frame. Silicon nitride was chosen because it is highly wettable and has a higher thermal conductivity than the electrolyte, both of which are important for extreme superheating, minimizing heterogeneous nucleation (compare with [20]). It was mounted in a fluidic cell in which the membrane separated two fluid chambers connected electrically only through the pore.…”

mentioning

confidence: 99%

Superheating and Homogeneous Single Bubble Nucleation in a Solid-State Nanopore

et al. 2014

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We demonstrate extreme superheating and single bubble nucleation in an electrolyte solution within a nanopore in a thin silicon nitride membrane. The high temperatures are achieved by Joule heating from a highly focused ionic current induced to flow through the pore by modest voltage biases. Conductance, nucleation, and bubble evolution are monitored electronically and optically. Temperatures near the thermodynamic limit of superheat are achieved just before bubble nucleation with the system at atmospheric pressure. Bubble nucleation is homogeneous and highly reproducible. This nanopore approach more generally suggests broad application to the excitation, detection, and characterization of highly metastable states of matter.

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