Several types of labels are employed in nanotechnology: 1. Fluorescent Labels: These include quantum dots and organic dyes that emit light upon excitation, making them ideal for imaging and tracking. 2. Isotopic Labels: Radioactive or stable isotopes can be used to trace the movement and distribution of nanomaterials in biological systems. 3. Magnetic Labels: Superparamagnetic nanoparticles are used in magnetic resonance imaging (MRI) and for separating tagged entities using magnetic fields. 4. Chemical Labels: Specific chemical tags that bind to particular molecular structures, enabling selective labeling and detection.
