Bubble Trap
Bubble Trap - 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...
13:39
Optical Trapping of Nanoparticles
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Cited by 7 •
2013
The following setup approach details low power optical trapping of dielectric nanoparticles using a double-nanohole in metal film.
01:41
Social Traps
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2020
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned more cows, the larger...
11:45
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Cited by 19 •
2017
This paper presents a microfabrication methodology for surface ion traps, as well as a detailed experimental procedure for trapping ytterbium ions in a room-temperature environment.
05:57
Dean-Stark Trap
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2023
Source: Vy M. Dong and Jan Riedel, Department of Chemistry, University of California, Irvine, CA A Dean-Stark trap is a special piece of glassware, which allows the collection of water during a reaction through an azeotropic distillation. The desire to collect water from a reaction can have various reasons. It can drive the equilibria in reactions, where water is formed as a byproduct. According to Le Chatelier's principle, a change in temperature, pressure, concentration, or volume will cause...
FAQs
The enlarged chamber gives gas bubbles more space to separate from the moving liquid. As the flow expands, its velocity decreases, making it easier for buoyancy to drive bubbles toward a collection region rather than carry them downstream. This supports steadier liquid delivery and reduces the risk of channel blockage or inconsistent reagent movement in small-volume systems.
Buoyancy moves gas bubbles upward or toward a designated separation pathway, while reduced flow velocity gives that movement time to occur. These processes work together rather than independently: rapid liquid movement can carry bubbles onward, whereas slower movement promotes their accumulation for removal. Their coordination helps protect downstream fluidic operations from unstable flow.
Controlled venting provides an exit route for bubbles after they collect within the separation region. Without a managed outlet, accumulated gas could remain in the system or be carried back into the liquid path. By allowing gas to leave while liquid continues downstream, venting helps preserve stable flow and limits interference with measurements or imaging.
The liquid stream is directed into an enlarged chamber or another separation pathway, where flow slows and buoyancy encourages bubbles to collect. A controlled vent then allows the accumulated gas to exit, while the liquid proceeds through the downstream channel. This sequence is intended to stabilize delivery before the stream reaches sensitive assay or diagnostic components.
They are particularly useful in microfluidic immunoassays, cell-based experiments, and biosensors that handle small-volume biological samples. In these settings, bubbles can obstruct channels, disturb reagent delivery, or create artifacts during imaging. Removing them before downstream analysis helps maintain the intended fluidic conditions and supports more consistent experimental measurements.
Reliable bubble removal can improve assay consistency by preventing uneven reagent distribution and interruptions in liquid flow. It also reduces imaging artifacts in experiments that monitor cells or assay signals within fluidic channels. For immunology and infection studies, these improvements can make measurements more reproducible when samples and reagents must move through compact laboratory or diagnostic systems.