two-dimensional materials are called?

Two-dimensional materials are called nanomaterials or 2D materials.

Two-dimensional materials are called monolayers.

Two-dimensional materials are called "monolayers" or "2D materials". These materials consist of a single layer of atoms or molecules that are tightly packed together in a 2D plane. They possess unique properties and have attracted significant attention due to their potential applications in various fields such as electronics, photonics, and energy storage.

If you want to learn more about a specific example of a two-dimensional material, you can look up graphene. Graphene is a famous two-dimensional material composed of a single layer of carbon atoms arranged in a hexagonal lattice. It is known for its exceptional strength, electrical conductivity, and versatility.