Lamella (materials)

From Wikipedia, the free encyclopedia

A lamella is a gill-shaped structures: fine sheets of material held near one another, with fluid in between. They appear in biological and engineering contexts, such as filters and heat exchangers. The microscopic structures in bone and nacre are lamellae in the materials science sense of the word.

In chemistry (especially mineralogy and materials science), lamellar structures are fine layers, alternating between different materials. They can be produced by chemical effects (as in eutectic solidification), biological means, or a deliberate process of lamination, such as pattern welding. Lamellae can also describe the layers of atoms in the crystal lattice of a material such as a metal.

The term has been used to describe the construction of lamellar armour, as well as the layered structures that can be described by a lamellar vector field.

In a water-treatment context, Lamellae filters may be referred to as plate or tube filters.

This term is used to describe a certain type of Ichthyosis, a congenital skin condition. Lamellar Ichthyosis often presents with a collodian membrane at birth. It is characterized by generalized dark scaling.