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In fluid mechanics, the Cheerios effect is the phenomenon that occurs when floating objects that do not normally float attract one another. Wetting, an example of the 'Cheerios effect,' is when breakfast cereal clumps together or clings to the sides of a bowl of milk. It is named after the common breakfast cereal Cheerios and is due to surface tension. The same effect governs the behavior of bubbles on the surface of soft drinks.^[1]

1. Making liquid and fluid animations in After Effects might seem daunting, but it’s actually much easier than it sounds. After Effects offers a wide variety of Effects that gives users the power to simulate nearly anything. In this tutorial, we’ll be focusing on creating a graphic, “cartoon” style liquid animation with just a few effects.
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Description[edit]

This clumping behaviour applies to any small macroscopic object that floats or clings to the surface of a liquid. Examples of such objects are hair particles in shaving cream and fizzy beer bubbles. The effect is not noticeable in boats and other large floating objects because the force of surface tension is relatively small at that scale.

Explanation[edit]

At the interface between a liquid and air, molecules of the liquid are subject to greater attractive forces from those below than from air molecules. Opposing these forces is the attraction of the liquid molecules to the surface of the container. The result is that the liquid's surface forms a meniscus which exhibits surface tension and acts as a flexible membrane. This membrane may be curved with the center either higher or lower than the edges.

The attraction is not created by the depression or hills per se, but the objects are just following the path of least resistance.

The object that creates the hill does so because it's less dense than water but more dense than air. The object is actually creating a depression, not in the water but in the air above it. Like a heavy ball on a hill of air, the object will fall 'down', because all the heavy water 'above' it is pushing it.

The attraction between objects that create depressions can be seen as 2 balls in a trampoline, which have a kind of hill between them but they still fall into each other because the 'hill' at the opposite side is larger than that in the middle. The depression is only visible around the object where the bend is enough to be noticeable, but it reaches the edges of the container.

A floating object will seek the highest point of the membrane and thus will find its way to either the center or the edge. A similar argument explains why bubbles on surfaces attract each other: a single bubble raises the liquid level locally causing other bubbles in the area to be attracted to it. Dense objects, like paper clips, can rest on liquid surfaces due to surface tension. These objects deform the liquid surface downward. Other floating objects that are seeking to sink but are constrained by surface tension will be attracted to the first.^[2] Objects with an irregular meniscus also deform the water surface forming 'capillary multipoles'. When such objects come close to each other they rotate in the plane of the water surface until they find an optimum relative orientation. Subsequently, they are attracted to each other by surface tension.^[3][4]

Writing in the American Journal of Physics, Dominic Vella and L. Mahadevan of Harvard University discuss the Cheerios effect and suggest that it may be useful in the study of the self-assembly of small structures.^[5] They calculate the force between two spheres of density${\displaystyle {\rho }_s}$ and radius ${\displaystyle R}$ floating distance ${\displaystyle \ell }$ apart in liquid of density ${\displaystyle \rho }$ as

${\displaystyle 2\pi \gamma R{B}^{5/2}{\mathrm{\Sigma }}^2{K}_1\left(\frac{\ell }{L_c}\right)}$

where ${\displaystyle \gamma }$ is the surface tension, ${\displaystyle K_1}$ is a modified Bessel function of the first kind, ${\displaystyle B=\rho g{R}^2/\gamma }$ is the Bond number, and

${\displaystyle \mathrm{\Sigma }=\frac{2{\rho }_s/\rho -1}{3}-\frac{\cos \theta }{2}+\frac{{\cos }^3\theta }{6}}$

is a nondimensional factor in terms of the contact angle${\displaystyle \theta }$.Here ${\displaystyle L_C=R/\sqrt{B}}$ is a convenient meniscus length scale.

See also[edit]

• Popcorn effect on high-frequency vibrating screens

References[edit]

1. ^'Scientists explain the 'Cheerio Effect''. NBC News. Retrieved 2006-08-28.
2. ^Chan, D.Y.C.; Henry, J.D.; White, L.R. (1979). 'The interaction of colloidal particles collected at the fluid interface'. Journal of Colloid and Interface Science. 79 (9): 410–418. doi:10.1016/0021-9797(81)90092-8.
3. ^Stamou, D.; Duschl, C.; Johannsmann, D. (2000). 'Long-range attraction between colloidal spheres at the air–water interface: The consequence of an irregular meniscus'. Physical Review E. 62 (4): 5263–5272. Bibcode:2000PhRvE..62.5263S. doi:10.1103/PhysRevE.62.5263. PMID11089088.
4. ^Lucassen, J. (1992). 'Capillary forces between solid particles in fluid interfaces'. Colloids and Surfaces. 65 (2–3): 131–137. doi:10.1016/0166-6622(92)80268-7.
5. ^Vella, D.; Mahadevan, L. (September 2005). 'The Cheerios effect'. American Journal of Physics. 73 (9): 817–825. arXiv:cond-mat/0411688. Bibcode:2005AmJPh..73..817V. doi:10.1119/1.1898523. S2CID16841823.

Giving the Liquid Glitch transition look has become very popular in recent months, as it has been consistently applied in both amateur videos and professional productions on different screens.

One of the benefits of this effect is that it can be applied to different visual aspects , such as text, images and specific designs.

Due to its continuous application, many editors have decided to integrate such visualization among their animations. So Adobe could not be left behind in this regard.

Adobe After Effects works as a tool used on a professional level. Offering the sequence of tools necessary to create this effect on any layer or aspect that you want to integrate in your video.

That is why it has been decided to dedicate today’s article to him. So that you can learn to insert it and thus attract more attention to your content.

Is the Liquid Glitch transition effect enabled in Adobe After Effects?

Since this type of animation can be inserted on any style and design that makes up the audiovisual file. There is no default setting to do this.

In itself, After Effects is responsible for being a program designed to create or modify the composition of a video. As well as it can improve the quality of graphics and special effects that can be displayed within it.

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Thanks to this, you acquire the professional use that we have mentioned above. Because it has a high-efficiency operating method, in order to create high-quality results.

Its degree of specialization as far as special effects are concerned, makes achieving the liquid Glitch transition possible on the number of layers on which it is made. Although it clearly requires applying a series of previous steps to achieve it.

Insert the Liquid Glitch transition effect into After Effects

To begin with, each new project requires creating a new composition to begin editing the content. In this case, the new composition will be made from scratch and without importing external files.

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At the end of configuring the composition and accepting it , you must insert what you want to apply the effect to. Whether it is a text, a logo, an image or a design, it must be located within the composition box, preferably fully centered, in order to start editing.

The layer that has the object that will execute the Liquid Glitch transition requires that its channels be separated. So you enter the effects tab and within the “Channel” section you will find the “Shift Channels” option.

This executes the color scheme (red, blue and green) that is displayed within the video. To properly create a Glitch effect. For each layer of object, a single color must be kept activated , in order to give the impression of interference. In other words, copy and paste each of the layers of the object, so that each one corresponds to a color.

It should be noted that each layer must obtain an animation (only if the user wishes) and the series of effects that the editor prefers to improve the visualization of the object.

Liquid transition

Liquid Metal Effect In After Effects

As for the liquid transition, it will be necessary to create a new layer. Which must be applied to all numbers of objects within which the effect will be established.

The name of the transition that creates the desired effect is called “Scale Wipe”. Within which you can configure the style, angle and direction to perceive the desired ” liquid ” state .

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These two settings are the main ones to create the Liquid Glitch transition effect easily. So it is up to you to insert new animations to improve the result.

One of the greatest benefits of After Effects is that despite being a software for professional use, it has no difficulty in understanding or usability. So even a novice can achieve quality edits if they practice enough.

Now through these simple steps you will finally be able to obtain the ideal visual for your videos. Attracting more people to review your multimedia content through platforms such as YouTube or public spaces that are willing to play them.