Bubble Dynamics
Bubble Dynamics - Related Videos
01:13
Excess Pressure Inside a Drop and a Bubble
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2023
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops. where γ corresponds to the surface tension. Recalling that the force per...
08:19
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
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Cited by 2 •
2021
A fast and reliable technique is proposed to control the shape oscillations of a single, trapped acoustic bubble that is based on coalescence technique between two bubbles. The steady-state, symmetry-controlled bubble shape oscillations allow analysis of the fluid flow generated in the vicinity of the bubble interface.
11:14
A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level
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Cited by 8 •
2017
A microfluidic chip was fabricated to produce pairs of gold dots for tandem bubble generation and fibronectin-coated islands for single-cell patterning nearby. The resultant flow field was characterized by particle image velocimetry and was employed to study various bioeffects, including cell membrane poration, membrane deformation, and intracellular calcium response.
08:28
Synthesis of Phase-shift Nanoemulsions with Narrow Size Distributions for Acoustic Droplet Vaporization and Bubble-enhanced Ultrasound-mediated Ablation
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Cited by 18 •
2012
Phase-shift nanoemulsions (PSNE) can be vaporized using high intensity focused ultrasound to enhance localized heating and improve thermal ablation in tumors. In this report, the preparation of stable PSNE with a narrow size distribution is described. Furthermore, the impact of vaporized PSNE on ultrasound-mediated ablation is demonstrated in tissue-mimicking phantoms.
07:18
Lipid Bilayer Experiments with Contact Bubble Bilayers for Patch-Clampers
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Cited by 12 •
2019
Here, we present a protocol for the formation of lipid bilayers using a contact bubble bilayer method. A water bubble is blown into an organic solvent, whereby a monolayer is formed at the water-oil interface. Two pipettes are manipulated to dock the bubbles to form a bilayer.
FAQs
Pressure changes can drive a bubble’s size and motion, while surface tension resists changes at its interface. Liquid viscosity dampens movement and oscillation, and gas content affects how the bubble responds to its surroundings. Considering these variables together helps researchers predict whether a bubble will remain relatively stable, deform, or undergo more pronounced dynamics in a fluid system.
A nearby boundary or neighboring bubble can modify the conditions around a bubble, changing how it deforms, oscillates, or collapses. These interactions matter because bubble behavior is not determined only by the bubble itself; its surroundings also influence local flows and stresses. Accounting for these effects supports more reliable design of fluid systems and biomedical devices.
Rapid collapse can generate intense local flows and stresses, making it a particularly important event to evaluate. In bioengineering, these effects may influence how bubbles interact with soft materials or biological environments. Understanding when collapse occurs and how strongly it develops helps researchers pursue useful mechanical effects while limiting unwanted tissue damage and improving treatment precision.
Designers need to account for how pressure changes influence bubble behavior, including growth, deformation, oscillation, and collapse. The goal is not simply to generate bubbles, but to control their response within the relevant fluid or soft material. Applying these principles can improve treatment precision while helping limit unwanted tissue damage in biomedical therapies.
In contrast-enhanced imaging, researchers consider bubble behavior that supports image-related contrast, whereas sonoporation represents a different biomedical application of controlled bubble activity. For both uses, examining deformation, oscillation, and collapse connects operating conditions with the intended outcome. This distinction helps bioengineers match bubble control strategies to imaging or therapeutic objectives.
Bubble-based microfluidic processes require researchers to consider how bubbles form, grow, deform, oscillate, and collapse within confined fluid systems. Pressure, surface tension, viscosity, gas content, and nearby boundaries can all affect the resulting behavior. Using these principles as design considerations supports the development and control of bubble-based microfluidic processes and related biomedical devices.