Materials with high resistivity are known as insulators. They prevent the movement of electrons because they have tightly bound electrons that are difficult to dislodge and contribute to the flow of current.

Here are some examples of common insulators:

* Glass: Used in windows, bottles, and electrical insulation.

* Rubber: Used in tires, hoses, and electrical insulation.

* Plastic: Used in a wide variety of applications, including containers, electronics, and insulation.

* Ceramic: Used in insulators, tiles, and pottery.

* Wood: Used in construction and furniture.

* Paper: Used in packaging, writing, and electrical insulation.

* Air: Acts as an insulator in many electrical applications.

Key features of insulators:

* High resistance: Insulators resist the flow of electricity, preventing electrons from moving freely through them.

* Tightly bound electrons: The electrons in insulators are tightly bound to their atoms, making it difficult for them to move and carry an electric current.

* Large band gap: Insulators have a large energy gap between the valence band (where electrons are normally located) and the conduction band (where electrons can move freely). This large gap makes it difficult for electrons to gain enough energy to jump to the conduction band and contribute to current flow.

It's important to note that even insulators can conduct electricity under extreme conditions, such as extremely high voltages or temperatures. However, in general, they are excellent at preventing the flow of electrons and are therefore essential for many electrical and electronic applications.