The word "kataphoresis" ( /kætəfəˈriːsɪs/) refers to a process of electrophoresis, where oppositely charged particles or molecules are separated under the influence of an electric field. The prefix "kata" means down or against, while "phoresis" denotes movement. The spelling of the word derives from its Greek origin, where "kata" means downwards, and "phor" means to carry or bear. The word is often used in chemistry, biology, and engineering, particularly in the separation of charged particles in solutions.
Kataphoresis refers to a process in electrostatics and electrophoresis where charged particles or molecules are attracted towards the cathode, or negatively charged electrode. It is derived from the Greek words "kata" meaning down or towards, and "phoresis" meaning the movement or transport of particles.
In electrostatics, kataphoresis occurs when positively charged particles or ions move towards the negatively charged electrode. This phenomenon can be observed in various fields, such as in industrial and scientific applications, including the coating of objects. For instance, in automotive painting, kataphoresis is used to apply a protective coating to car bodies. The positively charged paint particles are attracted to the negatively charged metal surface, ensuring an even and uniform coating.
In electrophoresis, kataphoresis is a subtype of electrophoresis where charged particles, such as proteins or DNA fragments, move towards the cathode when subjected to an electric field. This technique is widely employed in scientific research, particularly in molecular biology and biochemistry, to separate and analyze different components of a sample based on their electrical charge and size.
Overall, kataphoresis is an essential process in electrostatics and electrophoresis that involves the movement of charged particles towards the cathode under the influence of electric fields. Its applications are diverse, ranging from industrial coating processes to scientific analysis of biological samples.
The word "kataphoresis" has its roots in Greek. It is derived from "kata" (meaning "down" or "through") and "phorḗsis" (meaning "conveyance" or "transportation"). When broken down, "kata" denotes movement or direction, while "phorḗsis" refers to the act of carrying or conveying something. In the medical context, "kataphoresis" refers to a technique used in dentistry, where medication is delivered through the skin or mucous membranes using an electric current.