Diffussion-limited aggregation and the mobility of particles

In summary, the professor explained that high mobility of particles on a surface leads to local equilibration, which can result in compact aggregation. This can be seen in real-life examples such as traffic jams, where interactions between cars lead to energy dissipation and eventually a pile-up. This concept is important in understanding the causes of aggregation in various systems.
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How a high mobility of particles over surface cause to aggregation, the professor in the class said that "high mobility causes to local equilibration and thus to a compact aggregation".. which I didn't understand..! What does he mean about local equilibration and how all connect to each other?!
 
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Looks like an old thread, but if you are still out there - think of cars piling up in a traffic jam, or sticks flowing down a river. As soon as two particles bump into one another, they lose energy - so then those two particles slow down, and others catch up, and traffic jam! On highways, it is a natural phenomenon, not always bad driving that causes "aggregation". Cars slow down to try and keep safe separation, and it just takes one car slowing down before everyone is piled up. It all stems from energy dissipation through interactions.
 
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I still here :) thank you so much for answering the thread :)
 

1. What is diffusion-limited aggregation (DLA)?

Diffusion-limited aggregation (DLA) is a process in which particles randomly move and aggregate together to form a larger cluster. This process is driven by diffusion, which is the random movement of particles due to their thermal energy.

2. How does DLA relate to the mobility of particles?

The mobility of particles refers to their ability to move and diffuse through a medium. In DLA, the mobility of particles is a crucial factor in the formation of clusters. As particles diffuse and come into contact with the cluster, they become part of it and contribute to its growth.

3. What factors affect the mobility of particles in DLA?

The mobility of particles in DLA is affected by several factors, including the size and shape of the particles, the viscosity of the medium, and the concentration of particles. In general, smaller and more spherical particles have higher mobility, while larger and more irregularly shaped particles have lower mobility.

4. How is DLA used in scientific research?

DLA is used in scientific research to model and understand various natural phenomena, such as the formation of snowflakes and coral reefs. It is also used to study the behavior of fluids and the movement of particles in different environments, such as in biological systems or in industrial processes.

5. What are some potential applications of DLA?

DLA has potential applications in various fields, including materials science, physics, and biology. It can be used to design and study new materials with specific properties, such as self-assembling structures. It can also be used to optimize industrial processes, such as filtration and separation, by understanding how particles move and aggregate in different conditions.

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