Cracking in nanomaterials can be attributed to several reasons:
1. Mechanical Stress: Nanomaterials often undergo mechanical stress during fabrication or when in use. This stress can lead to the formation of cracks. 2. Thermal Expansion: Differences in thermal expansion coefficients between the nanomaterial and its substrate can cause cracking. 3. Chemical Reactions: Exposure to certain chemicals can induce reactions that weaken the material's structure, leading to cracks. 4. Defects in Material: Intrinsic defects such as voids or dislocations within the material can act as stress concentrators, leading to crack initiation.
