There are also microelectrodes made with insulated metal wires, made from inert metals with high Young modulus such as tungsten, stainless steel, or platinum-iridium alloy and coated with glass or polymer insulator with exposed conductive tips. These are mostly used for recording from the external side of the cell membrane. More recent advances in lithography have produced silicon-based microelectrodes.
There are also microelectrodes made from insulated metal wires, constructed from non-reactive metals such as tungsten, stainless steel, or platinum-iridium alloy and coated with glass or polymer insulator with exposed conductive tips. These are primarily used for recording from the external side of the cell membrane. More recent breakthroughs in lithography have produced silicon-based microelectrodes.