Cavitation bubble interaction with compliant structures on a microscale: A contribution to the understanding of bacterial cell lysis by cavitation treatment

Inactivation of the enveloped virus phi6 with hydrodynamic cavitation

“…Based on the result from the IT experiments with methanol ( Table 2 : HC+M – IT30), we speculate that mechanical effects of cavitation are the reason. This finding also corresponds well with the recent experimental and numerical research on cavitation bubble interaction with liposomes [46] , [47] and bacteria [48] , [49] , where it was shown, that microstreaming is the primary mechanical driver of liposome deformation and bacterial cell damage, and that poration of cell membranes could be explained solely by mechanical effects.…”

Numerical investigation of two-microbubble collapse and cell deformation in an ultrasonic field

“…3 a. Regarding the liquid jet direction, some previous numerical studies reported that liquid jets can be directed away from the deformable boundaries [22] , [28] , [37] . However, the present study is different from the previous studies in that it considers the bubble oscillation caused by a traveling ultrasonic wave and the nearby cell deformation.…”

“…They found that cell deformation is enhanced by either reducing the acoustic frequency or increasing the initial size of the bubble. Recently, Zevnik and Dular [21] , [22] analyzed the bubble-liposome and bubble-bacteria interactions by employing a fluid–structure hybrid computational method and demonstrated the mechanical behavior of the bio-structural deformation induced by bubble collapse in a high-pressure field. The microbubble around the cell showed spherical collapse or liquid jet away from the cell, depending on the bubble-cell size ratio and bubble-cell distance.…”

Investigating the effects of ultrafine bubbles on bacterial growth

“…22,23 However, another important factor as the interaction of bubbles and bacteria has not yet been examined at its most fundamental level, at which a single bubble-bacterium pair is considered. 24 Because gas bubbles are negatively charged in water, the electrostatic repulsion between bubbles and cells is oen believed to be stronger than the hydrophobic force. Nevertheless, this ionic interaction is not always dominant.…”