Monolayer

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Monolayer

A Monolayer (/ˈmɒnəˌleɪər/) is a single, closely packed layer of atoms, molecules, or cells that exist on a surface or interface. It is a term widely used in Chemistry, Physics, and Biology.

Etymology

The term "Monolayer" is derived from the Greek words "mono" meaning single, and "layer" indicating a stratum or a sheet-like structure.

Definition

In Chemistry, a Monolayer is a layer of molecules that exists in a closely packed state, covering a surface or interface. This layer is exactly one molecule thick. In Physics, a Monolayer refers to a layer of atoms or molecules that is just one atom or molecule thick. In Biology, a Monolayer refers to a layer of cells that is only one cell thick.

Related Terms

  • Bilayer: A structure that is two molecules thick. It is often used to describe the structure of cell membranes.
  • Multilayer: A structure that is more than one molecule, atom, or cell thick.
  • Langmuir-Blodgett film: A type of monolayer that is created by transferring a monolayer from the surface of a liquid to a solid substrate.
  • Self-assembled monolayer: A type of monolayer that forms spontaneously when a molecular species with a reactive group is applied to a substrate surface.

Applications

Monolayers have a wide range of applications in various fields. In Chemistry, they are used to study the properties of molecules and their interactions with each other. In Physics, they are used to study the properties of materials at the atomic or molecular level. In Biology, they are used to study the properties of cells and their interactions with each other and their environment.

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