Dr. Voss developed the "Rapid Kinetics Spectroscopy," a technique that allows the observation of intermediate states in enzyme-catalyzed reactions in real-time. This has been crucial for elucidating reaction mechanisms at a molecular level. Professor Mendel, on the other hand, pioneered the use of "In Situ X-ray Diffraction" to study structural changes in catalysts under reaction conditions. This technique has provided invaluable data on the stability and performance of catalysts in real-world applications.