T1 process
Encyclopedia
A T1 process is a topological rearrangement process of the first kind for four discrete objects such as bubbles
, drop
s, cells
, etc. The four objects are initially arranged in a plane in the following way. Objects A and B are in contact and objects C and D are on either side of the AB group and touching both A and B. The T1 process consists in breaking the contact between A and B and establishing the contact between C and D.
Materials made of these objects have a number of similar rheological properties
. Among these, plasticity
allows them to be deformed irreversibly. For such materials, such irreversible deformations arise from the possibility to rearrange their constitutive objects. Thus, the T1 process is the major mesoscopic ingredient of plasticity for these materials.
Soap bubble
A soap bubble is a thin film of soapy water enclosing air, that forms a hollow sphere with an iridescent surface. Soap bubbles usually last for only a few seconds before bursting, either on their own or on contact with another object. They are often used for children's enjoyment, but they are also...
, drop
Drop
-General use:*Drop or droplet, a small volume of liquid**Eye drops, saline drops used as medication for the eyes*Drop , a unit of measure of volume*Falling , or allowing an object to fall...
s, cells
Cell (biology)
The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing, and is often called the building block of life. The Alberts text discusses how the "cellular building blocks" move to shape developing embryos....
, etc. The four objects are initially arranged in a plane in the following way. Objects A and B are in contact and objects C and D are on either side of the AB group and touching both A and B. The T1 process consists in breaking the contact between A and B and establishing the contact between C and D.
Materials made of these objects have a number of similar rheological properties
Rheology
Rheology is the study of the flow of matter, primarily in the liquid state, but also as 'soft solids' or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force....
. Among these, plasticity
Plasticity
Plasticity may refer to:Science* Plasticity , in physics and engineering, plasticity is the propensity of a material to undergo permanent deformation under load...
allows them to be deformed irreversibly. For such materials, such irreversible deformations arise from the possibility to rearrange their constitutive objects. Thus, the T1 process is the major mesoscopic ingredient of plasticity for these materials.