Nanophotonics is the study of light at the nanoscale, focusing on how light interacts with materials that are smaller than the wavelength of visible light. This field combines principles from optics and nanotechnology to manipulate light in innovative ways, enabling the development of new devices and applications. Researchers in nanophotonics explore phenomena such as plasmonics, where light interacts with electrons in metals, and photonic crystals, which can control the flow of light. These advancements have potential applications in areas like telecommunications, sensors, and medical imaging, leading to faster and more efficient technologies.