Mechanochemistry is a branch of chemistry that focuses on chemical reactions driven by mechanical force, such as grinding, milling, or shearing. Unlike traditional methods that rely on thermal energy, mechanochemistry employs mechanical energy to activate and promote chemical transformations between molecules. This field has gained significant attention in recent years due to its potential to enhance reaction rates, selectivity, and the ability to synthesise novel compounds that may be challenging or impossible to produce using conventional methods. 

The original concept of mechanochemistry is probably the starting of the universe, but persuasion dates back to the 19th century, advancements in technology and the understanding of the underlying principles have accelerated its development in the modern era. Mechanochemical reactions take place in various environments, ranging from laboratory-scale ball mills to high-energy planetary ball mills, vibrational mills, and even ultrasonic devices.