What is fine bubble?
Classification of bubbles
Bubbles are very familiar for us. We look them in ocean, river, and fountain. There are countless types of products containing of bubbles as beverages, detergents, materials and others due to their diverse properties. In addition, bubbles have been applied to technologies such as gas absorption, flotation, microbial cultivation, culturing, power generation, washing and other technologies. Among all the attracted phenomena and science and technology, bubbles are rarely the final products or objects themselves, and those have usually been of great interest to the results of the contribution of bubble formation and presence. Therefore, systematic classification covering all “bubbles” was not made completely.
Therefore, the definition of “bubbles” was considered once again. In a broad sense, “bubbles” are “closed spaces made up of gas surrounded by the material other than gas”. When classified by the phase in contact with the bubble surface,
- “floating bubbles” which are surrounded by liquid.
- “partially adhering bubbles” which are in partially contact with solid.
- “hollow particles” which are surrounded by solid film.
- “void” surrounded by solid as a continuous phase.
Furthermore, for each classified bubble, the bubble's name prefixed by its size, internal gas etc. may be named.