Capillary Array: AlOx Coating
AlOx coating: This type of coating is a mixture of aluminum oxide and aluminum metal, which is a cermet material that has high electrical conductivity, thermal conductivity, and heat dissipation. Alox coating can generate higher electric fields and dissipate heat more efficiently in the capillary, which can increase the separation speed and resolution. Alox coating can also form a protective layer of aluminum nitride (AlN) on the surface of the capillary by nitriding at high temperature. AlN is a gray-colored material that has high thermal stability and chemical resistance.