Covalent bonds

In gemstone metamaterial technology covalent bonds are of most interest since they:

• are usually strongly localized (unlike metallic bonds)
• allow for passivation of surfaces making them not weld together on contact. Essential for any kind of machine with moving parts sliding over each other.
• are strong enough to not diffuse around at room temperature. (unlike metallic bonds where single atoms often like to diffusing around wildly on surfaces)

Related

• The basics of atoms
• The nature and shape of atoms
• Metallic bonds
• Ionic bonds
• others: coordinative bonds, hydrogen bonds, …

External links

• Covalent bond (Wikipedia)