Bubble Generator
Bubble Generator - Related Videos
01:13
Excess Pressure Inside a Drop and a Bubble
0 Views •
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.
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.
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.
FAQs
Gas flow rate and pressure influence how gas enters the liquid, while liquid viscosity and surface tension affect bubble formation, diameter, and persistence. Adjusting these variables changes the resulting gas–liquid interface, allowing researchers to produce bubbles suited to different experimental conditions. These controls are especially important when consistent bubble behavior is needed for medical imaging or fluid studies.
The gas–liquid interface determines how a bubble forms and behaves within the surrounding fluid. Its properties influence stability and size, which in turn affect how bubbles interact with ultrasound and how they move through liquid systems. Controlling this interface helps researchers study bubble behavior systematically and supports technologies that depend on predictable bubble responses.
Microbubbles provide a specialized scale for medical research because they can enhance acoustic contrast during ultrasound imaging. Their controlled production also creates model systems for examining bubble behavior in fluids. Larger bubbles may still support general studies of gas–liquid behavior, but microbubble-focused systems are particularly relevant when researchers need to investigate ultrasound-related imaging or therapeutic processes.
A typical setup introduces gas into a liquid through an orifice, nozzle, or porous membrane. Researchers regulate the gas flow rate and pressure while considering the liquid’s viscosity and surface tension. These conditions determine whether bubble production remains consistent and what bubble diameter results, making adjustment of the gas inlet and liquid environment central to the procedure.
Generated microbubbles are useful when ultrasound imaging requires enhanced acoustic contrast, helping distinguish fluid regions during imaging studies. They also support research on therapeutic ultrasound, where bubble behavior is examined in relation to ultrasound-driven processes. In both settings, controlled production provides a more consistent experimental system than relying on uncontrolled bubble formation.
Controlled bubbles provide model systems for studying gas behavior in fluids, including how bubble populations respond within liquid environments. The same approach can contribute to fluid mixing studies and delivery systems involving gases or encapsulated agents. By controlling bubble size and concentration, researchers can evaluate these systems under defined gas–liquid conditions and compare their behavior across experiments.