Initiation stage of nanosecond breakdown in liquid

Abstract

In this paper, based on a theoretical model [1], it has been shown experimentally that the initial stage of development of a nanosecond breakdown in liquids is associated with the appearance of discontinuities in the liquid (cavitation) under the influence of electrostriction forces. Comparison of experimentally measured area dimensions and its temporal development were found to be in a good agreement with the theoretical calculations.

All‐Solution‐Processed, Scalable, Self‐Cracking Ag Network Transparent Conductor

“…[2,[19][20][21][22] Another FoM that may be more physical is that proposed by Haacke, [23] significantly more heavily weighing transmittance, ϕ ¼ T 10 / R s , which has units of Ω À1 . There are yet others in the literature, [24][25][26][27] basically refinements of these two. Our results, shown in Figure 8, compare favorably, in fact superior, in all FoM schemes with those of various silver TCEs from the literature; we use F TCE and ϕ here to illustrate this.…”

Synthèse ultrarapide de nanoparticules par claquage dans des liquides diélectriques

“…Par conséquent, la densité du milieu reste proche de sa valeur initiale et la décharge est formée directement dans la phase liquide sans qu'il y ait transformation de phase [1]. Lorsque la durée de l'impulsion augmente, l'existence d'une zone de compression induite par électrostriction a pu être démontrée [2]. Cette zone de haute densité est suivie d'une autre, dite de raréfaction, qui serait alors le siège de l'amorçage du streamer dans ces conditions très particulières.…”

Pre-breakdown cavitation nanopores in the dielectric fluid in the inhomogeneous, pulsed electric fields

“…We have taken into account in (1) that since the critical initial sizes of the cavitation pore is about a few nanometers, and the unperturbed electric field induced by the high voltage potential of the electrode is changing on a length scale of order of the electrode size (~ 10-100 microns, typical for experimental conditions in [20][21][22][23][24][25] …”

“…The main difference between fast (nanosecond) pulses from slow (microsecond) is that in the time of a few nanoseconds, the liquid due to inertia does not have time to displace to the electrode and to compensate the negative pressure [19]. The work [18] has stimulated numerous experimental and theoretical studies on nanosecond breakdown in liquid dielectrics [20][21][22][23][24][25].…”