Indeed, GaN wafers technology has made significant advancements in power and RF devices. GaN-based power devices have the potential to provide higher efficiency, faster-switching speeds, and better thermal management than traditional silicon-based power devices. This makes GaN wafer ideal for various high-power applications, such as electric cars, solar inverters, and data centers.

In the RF space, GaN technology offers high power density and efficiency, making it suitable for use in high-frequency and high-power applications. GaN-based RF devices have been used in military and defense applications, as well as in communication systems, such as 5G wireless technology.

Overall, the use of GaN in power and RF devices has opened up new possibilities for more efficient and effective electrical systems. However, it's important to note that GaN is still relatively new technology, and there may be challenges in terms of availability, standardization, and cost.