A thermal barrier is a material or system designed to reduce the transfer of heat between two environments. It helps maintain temperature differences, preventing heat loss in colder conditions or heat gain in warmer conditions. Common examples include insulation materials used in buildings, such as fiberglass or foam, which keep indoor spaces comfortable and energy-efficient. In addition to buildings, thermal barriers are also important in various industries, including automotive and aerospace. For instance, ceramic coatings are often applied to engine components to protect them from extreme temperatures, enhancing performance and longevity. These barriers play a crucial role in energy conservation and equipment protection.