What are different types of thin films substrates?
thin movies measuring anywhere from less than nanometer to several micrometers of thick are too thin and fine to handle without the help of the substrate. The movies must be created on the substrate surface and remain attached to this material after they are created. There are many different types of thin films substrates and engineers have chosen a substrate based on the intended use of a thin film. The substrates can be made of metal, ceramics, glass, plastic or a combination of these materials.
Ceramic thin film substrates are used for many thin films, including those designed for use in electronics. Superconductors, semiconductors and microchips commonly use a thin film that is grown on a ceramic substrate. Some common ceramic substrates are aluminum, berylia and aluminum nitride.
Alumin is the most commonly used ceramic substrate mainly because the materials used to create it are easily available and cheap. The material is resistant, performs the thermal and resistantto strong acids and bases. Beryllia is another common choice because it has a high melting point and is an excellent insulator.
Material, which remains stable up to 2,498 degrees Fahrenheit (1,370 degrees Celsius), nitride is another of the most common ceramic substrates of thin films. It also makes heat quickly and does not spread when heated. The chemicals used to produce the substrate do not respond to those used in typical semiconductors. This material is often used for coolers, microwave devices, power transistors and materials used to handle objects at high temperatures.
Glass or clear plastic is commonly used by thin film substrates found in optical devices such as microscopes and binoculars. These substrates can be equipped with different lenses of thin films that can be designed to perform different functions. Can narrow the scope of lightfrequencies that are allowed through lenses or increase certain frequencies of light. Different lenses are designed for different specifications and one glass substrate can be equipped with a number of different thin films that change the properties of light in many different ways.
Some metals can also be used as substrates of thin films. The properties of specific metals are used to determine that thin films would best support. Metal substrates are used in various thin film devices, including some electronic devices.