Diamond Defects: Faster Than Sound

Researchers have settled a 60-year debate by discovering that tiny linear defects, known as dislocations, can propagate through a material faster than sound waves. These dislocations give metals their strength and workability but can also lead to catastrophic failures. By using X-ray radiography, scientists were able to measure the speed of dislocations propagating through diamond, providing insights into the damage they can cause in extreme conditions. The findings challenge previous assumptions about the fastest possible materials failure and have implications for understanding earthquake ruptures, structural failures, and precision manufacturing.