Growing patterned diamond surfaces that can improve electronic device cooling by as much as 23°C

https://www.eurekalert.org/news-releases/1117497

"diamond exceptional thermal conductor but extreme hardness makes difficult to shape using top-down etching, overcome using microwave plasma reactor growing diamond patterns directly onto substrates from carbon gases... photolithography for small details/ laser-cut film for larger 2" wafers, act as foothold for diamond crystals to grow in precise locations... silicon/ gallium nitride semiconductor compatible, so scalable for: 5G devices, radar, and AI data center processors"