Several strategies are employed to control the stability of nanomaterials:
1. Surface Modification: Coating nanoparticles with stabilizing agents like polymers, surfactants, or ligands can prevent aggregation and enhance their stability. 2. Core-Shell Structures: Encapsulating a nanoparticle in a protective shell material can improve its resistance to oxidation and other environmental factors. 3. Environmental Control: Maintaining an inert atmosphere or specific pH levels can help preserve the stability of sensitive nanomaterials. 4. Size and Shape Control: Uniformly sized and shaped nanoparticles are generally more stable as they have consistent surface energies and interactions.