Several key metrics are used in benchmarking nanotechnology: 1. Size and Morphology: The size, shape, and distribution of nanomaterials. 2. Surface Area: The specific surface area, which is crucial for catalytic and adsorptive properties. 3. Chemical Composition: The purity and elemental composition of the nanomaterials. 4. Mechanical Properties: Tensile strength, elasticity, and hardness. 5. Electrical and Thermal Conductivity: Important for electronic and thermal management applications. 6. Biocompatibility: For nanomaterials used in biomedical applications. 7. Environmental Impact: Assessing the ecotoxicity and biodegradability of nanomaterials.