An advanced analytical instrument used to study molecular interactions and material properties at surfaces and interfaces. It measures mass changes at the nanogram level by monitoring the resonant frequency and dissipation of a quartz crystal, providing insights into binding kinetics, adsorption, and viscoelastic properties of thin films., Manufactured by Biolin Scientific, this QCM-D system is critical for research in biomaterials, drug delivery, surface chemistry, and sensor development, offering real-time, label-free analysis of molecular events.