Metallic BondingMetallic bonding is a type of chemical bond that occurs between metal atoms. Unlike ionic or covalent bonds, metallic bonds involve a “sea of electrons”—free-moving electrons that travel throughout the entire metallic structure.Common Examples of Metals with Metallic Bonding:Iron (Fe) is extensively used in construction and manufacturing.Aluminum (Al) is a lightweight metal commonly used in transportation and packaging.Silver (Ag) and Gold (Au) are popular in jewelry and...

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...

MetalloidsMetalloids are elements that exhibit properties of both metals and nonmetals.They are found along a zigzag line on the periodic table, acting as a boundary between metals and nonmetals. This zigzag line runs between Groups 13 and 17, separating the metallic elements on the left from the nonmetallic elements on the right. Metalloids are significant because they can sometimes conduct electricity, making them essential for electronic devices such as computers and phones. Some common...