Several methods are used to evaluate the long term stability of nanomaterials:
1. Accelerated Aging Tests: These involve subjecting nanomaterials to extreme conditions to predict their lifespan under normal usage. 2. Characterization Techniques: Techniques such as Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and X-ray Diffraction (XRD) help monitor changes in structure and composition. 3. Performance Testing: Regular testing of the functional properties of nanodevices ensures they meet the required standards over time.