Term: Layer-by-Layer (LbL) Assembly

Category: Coating Application Methods

Definition: Layer-by-layer (LbL) assembly is a surface coating method. In this method, a film coating is created on the surface by building up layers one at a time. Each deposited layer of material creates a cycle of layer, thereby building a film with the required thickness and properties. The layers are strongly attached to the surface through various intermolecular interactions, such as electrostatic attraction, hydrogen bonding, and covalent bonding.

Example Uses:

• Creating water-attracting or bacteria-resistant coatings on medical devices
• Building films for sensors
• Developing systems for the controlled release of substances
• Modifying membranes and implants

Related Content and Resources: 

Hydrophilic Coatings for Medical Devices: Intro, Benefits & Uses