Calcite (CaCO3) is a naturally occurring mineral that is widely used as a substrate material in various applications. It is known for its excellent optical properties, such as high transparency and low absorption loss, making it a popular choice for optical devices, such as polarizers, prisms, and beam splitters.
In addition to its optical properties, calcite also has good mechanical strength, making it suitable for use as a substrate in various mechanical applications. For instance, it is used as a substrate in pressure sensors and other mechanical sensing applications, due to its piezoelectric properties.
Calcite substrates are also commonly used in various applications in the field of biomedicine, due to their biocompatibility and biostability. For example, they are used as substrates in various biosensors and biomedical imaging devices, as well as in drug delivery systems.