Nanoparticle delivery is a research area that focuses on the use of nanoparticles for delivering drugs, genes, or other therapeutic agents to specific target sites in the body. Nanoparticles are tiny particles with sizes ranging from 1 to 100 nanometers, which allows them to penetrate tissues and cells more effectively than larger particles. These nanoparticles can be engineered to encapsulate and protect drugs or other payloads, allowing for their controlled release at the desired site. They can also be functionalized with targeting ligands to enhance their specificity and binding to specific cells or tissues. Overall, nanoparticle delivery offers the potential to improve the efficacy and safety of therapeutic agents by enabling targeted delivery and reducing off-target effects. This research area has a wide range of applications in drug delivery, gene therapy, imaging, and diagnostics.