Ever since methods to deposit diamond in the form of thin films by chemical vapour deposition (CVD) were developed in the 1990s

an astonishing variety of applications for this material has emerged. Indeed

the number and diversity of applications for CVD diamond are now so large that they merit a dedicated review in their own right

providing a comprehensive account of the huge variety of CVD diamond applications reported to date. This review discusses mechanical applications

as well as applications in electrochemistry

high-power electronic devices

quantum technology

thermal management

electron-emission devices

diamond composite materials

optics

radiation detectors

X-ray lenses

dosimeters

biomedical applications

diamond anvil cells

nuclear fusion applications

and nuclear betavoltaic batteries. Some applications for nanodiamond particles are also reviewed.